ABSTRACT The aim of this study was to characterise the lignocellulosic fractions of pruning waste from tree species showing potential for furniture production in Acaraú, Ceará. The experiment was conducted in a completely randomised, split-plot design, with the plots corresponding to two water regimes (irrigated for one year and irrigated for three years) and the sub-plots to eight tree species, with three replications. The chemical attributes were determined after seven years. Except for the insoluble lignin content, there was a significant effect from the different species in terms of the chemical properties of the wood. The results for the lignocellulosic fractions show the possibility of developing technological ways of adding value to these waste products, especially considering their lignin content. The different species also showed potential for use in producing cellulose pulp, with the exception of Handroanthus impetiginosus due to its high ash content. The results of this study offer new perspectives for future research into the use of forestry waste. Acaraú Ceará randomised splitplot split plot design years subplots sub replications content wood products pulp

Abstract Textile sludge is a waste from the effluent treatment of textile laundries and its incorporation into alternative materials has been proposed as a possibility for its disposal. A systematic search was carried out in literature from this perspective, aiming to observe concentrations of waste material and its preparation, matrices used, technological performance and immobilization of textile waste. The matrices used were mortars, concretes and ceramic bricks, in general, deleterious effects were observed on mechanical characteristics of the materials produced. In concrete and mortars, the fineness had an impact on increase in water demand, which increased mixtures porosity; and organic matter and heavy metals, in cement hydration. Recent studies therefore proposed waste material pre-treatment as a favorable alternative. Increases in porosity also occurred in ceramic bricks, however, due to high organic matter content. Regarding waste immobilization, cementitious materials showed satisfactory performance; ceramic bricks, on the other hand, obtained some results outside the normative limits. Therefore, it is necessary to expand discussions regarding the pre-treatment carried out on textile sludge, as well as its impacts on mechanical and environmental performance. disposal perspective preparation mortars bricks general produced demand metals hydration pretreatment pre however content hand limits Therefore

Resumo Olodo têxtil é um resíduo do tratamento do efluente das lavanderias têxteis e sua incorporação em materiais alternativos tem sido proposta como possibilidade para sua destinação. Foi realizada uma busca sistemática na literatura nesta perspectiva, visando observar as concentrações de material residual e seu preparo, as matrizes utilizadas, o desempenho tecnológico e imobilização do resíduo têxtil. As matrizes empregadas foram argamassas, concretos e tijolos cerâmicos, sendo observados, de maneira geral, efeitos deletérios nas características mecânicas dos materiais produzidos. Em concretos e argamassas, a finura impactou no aumento da demanda de água, o que elevou a porosidade das misturas; e a matéria orgânica e metais pesados, na hidratação do cimento. Estudos recentes propuseram, então, o pré-tratamento do material residual como uma alternativa favorável. Incrementos na porosidade também ocorreram nos tijolos cerâmicos, porém, devido ao elevado teor de matéria orgânica. Quanto a imobilização do resíduo, os materiais cimentícios apresentaram desempenho satisfatório; já os tijolos cerâmicos, obtiveram alguns resultados fora dos limites normativos. Portanto, é necessário ampliar as discussões quanto ao pré-tratamento realizado no lodo têxtil, bem como seus impactos no desempenho mecânico e ambiental. destinação perspectiva preparo utilizadas argamassas cerâmicos observados geral produzidos água misturas pesados cimento propuseram então prétratamento pré favorável porém satisfatório normativos Portanto ambiental

The selection of an underground mining method stems from a multivariate analysis that considers geomechanical, geological, economic, and operational parameters. Even after identifying the most compatible method, there is no assurance that the mining company will achieve the best performance. The geological complexity of some deposits requires adaptations of methods described in the literature to obtain more selectivity and reduce mining waste. There are some studies on geometry of underground structures, but a methodology that describes an adaptation of a room-and-pillar mining method for ore bodies with down-dip varying from 20° to 25° is novel. The present work aimed to reduce dilution by adapting the traditional room-and-pillar mining method (TRP) to inclined ore bodies. This new method is entitled short-hole room-and-pillar (SHRP). The equations that measure the dilution are defined according to the geometry of stopes and openings. The results comprise comparative analyses of the operational and planned dilutions to measure the performance of the SHRP method. The average operating dilution of the SHRP method was more than five times lower than the planned dilution according to the TRP method. Low operational dilution indicates high selectivity of the method and its potential to reduce underground mining tailings.

ABSTRACT This work aims to identify innovations, technological advances, and best practices to migrate towards a circular economy in air transport. The relevance of the research lies in the contribution to the generation of circular economy knowledge in the field of administration with application in the aeronautical industry. By analyzing literature and best practices, the circular economy could be a viable solution to reduce the use of natural resources in aircraft manufacturing and airport operations. Among the main findings are innovations and technological developments in new materials, fuels, building methods, and best practices implemented at airports to obtain energy and generate less waste. It has also been identified that applying circular economy principles in this mode of transport would contribute to sustainability efforts and increase the competitiveness of organizations in the sector.

RESUMEN Este trabajo tiene como objetivo identificar innovaciones, avances tecnológicos y mejores prácticas para migrar hacia una economía circular en el transporte aéreo. La relevancia de la investigación radica en el aporte a la generación de conocimiento sobre economía circular en el campo de la administración con aplicación en la industria aeronáutica. Al analizar la literatura y las mejores prácticas, la economía circular podría ser una solución viable para reducir el uso de recursos naturales en la fabricación de aeronaves y las operaciones aeroportuarias. Entre los principales hallazgos se encuentran innovaciones y desarrollos tecnológicos en nuevos materiales, combustibles, métodos de construcción y mejores prácticas implementadas en los aeropuertos para obtener energía y generar menos residuos. También se ha identificado que aplicar principios de economía circular en este modo de transporte contribuiría a los esfuerzos de sostenibilidad y aumentaría la competitividad de las organizaciones del sector.

Abstract Citrus production in Colombia is divided into six productive centers, with a total production of 1,450 thousand tons in 2021. The greater entrepreneurial activity stands out in the West and a lower level in the South, which generates 230 thousand tons per year of citrus waste, posing challenges in terms of pollution and wet/semi-solid waste management. This study evaluates the industrial potential of these waste products for strengthening the national citrus industry, considering three aspects: raw materials availability, technological opportunities, and market opportunities. The results indicate that Colombia has a robust citrus production, with an emphasis on oranges, mandarins, and lemons, and significant potential in the industrialization of the peel, which constitutes between 40% and 60% of the total fruit. To industrialization were identified six key research areas of citrus waste in terms of technological opportunities. Regarding market opportunities, there is observed growth both nationally and internationally in products derived from citrus waste, including essential oils, terpenes, dietary fiber, pectin, citric acid, and biofuels. Colombia is considered a country with great potential for the industrialization of citrus waste, supported by its abundant raw materials, promising technological opportunities, and a growing market. However, improvements in infrastructure, investment in research and development, and the promotion of entrepreneurial culture in the citrus sector are needed to fully capitalize on this opportunity.

Resumen La producción de cítricos en Colombia se divide en seis núcleos productivos con una producción en 2021, de 1450 mil toneladas. Se destaca mayor empresarización en el Occidente y menor nivel en el Sur, lo que genera 230 mil toneladas por año de residuos cítricos, planteando desafíos de contaminación y gestión de desechos húmedos/semi-sólidos. El presente estudio evalúa el potencial industrial de estos residuos para el fortalecimiento de la industria citrícola nacional, considerando tres aspectos: disponibilidad de materia prima, oportunidades tecnológicas y oportunidades de mercado. Los resultados indican que Colombia tiene una sólida producción de cítricos, con énfasis en naranjas, mandarinas y limones, y un potencial significativo en la industrialización de la cáscara, que constituye entre el 40% y el 60% del total de la fruta. Se identifican seis áreas clave de investigación para la industrialización de residuos cítricos en términos de oportunidades tecnológicas. En cuanto a las oportunidades de mercado, se observa un crecimiento tanto a nivel nacional como internacional en productos derivados de residuos cítricos, que incluyen aceites esenciales, terpenos, fibra dietética, pectina, ácido cítrico y biocombustibles. Colombia se considera un país con un gran potencial para la industrialización de residuos cítricos, respaldado por su abundante materia prima, prometedoras oportunidades tecnológicas y un mercado en crecimiento. Sin embargo, se requiere mejorar la infraestructura, invertir en investigación y desarrollo, y promover la cultura empresarial en el sector citrícola para aprovechar al máximo esta oportunidad.

ABSTRACT Introduction: An opportunity for the local development of Placetas, a municipality in the central region of Cuba, is the use of biogas generated from the swine waste from its Genetic Center as an energy alternative for the drying of different materials available in the area. Objective: To present a technological proposal for a multipurpose dryer for grains, tubers, protein plants and organic fertilizer, using biogas generated from swine waste as an energy source. Materials and Methods: The physicochemical parameters of the streams involved were identified, appropriate technologies were selected, process demands were estimated, and a rotary dryer was designed using the high-temperature method. Results and Discussion: A direct drying scheme was selected in a rotary equipment, ensuring ease in the handling of non-adherent granular solids and using mixtures of air and gases from biogas combustion as an energetic alternative. The technological proposal allows the treatment of 300 kg/h of wet material. It satisfies the drying service provided to productive forms of the area and their own productive needs. For tubers and protein plants, according to their initial humidity, a semi-continuous drying scheme was proposed with two passes and a hopper for storage and recycling of the material. The rotary dryer requires 0.7 m in diameter and 3.0 m in length. Conclusions: The developed proposal satisfies the productive demands with safety, energy efficiency, productivity and sustainability, contributing to the reduction of environmental impact and to the increase of the technical-economic effectiveness.

RESUMEN Introducción: Una oportunidad para el desarrollo local de Placetas, un municipio en la región central de Cuba, es el aprovechamiento del biogás generado con los residuales porcinos de su Centro Genético como alternativa energética para el secado de diferentes materiales disponibles en la zona. Objetivo: Presentar una propuesta tecnológica de secadero multipropósito para granos, tubérculos, plantas proteicas y fertilizante orgánico, que utiliza biogás generado con residuales porcinos como fuente energética. Materiales y Métodos: Se identificaron los parámetros físico-químicos de las corrientes involucradas, se seleccionaron las tecnologías adecuadas, se estimaron las demandas del proceso y se diseñó un secador rotatorio por el método de alta temperatura. Resultados y Discusión: Se seleccionó un esquema de secado directo en un equipo rotatorio, garantizando facilidad en el manejo de los sólidos granulares no adherentes y utilizando mezclas de aire y gases de la combustión del biogás como alternativa energética. La propuesta tecnológica permite tratar 300 kg/h de material húmedo. Se satisface la prestación del servicio de secado a formas productivas de la zona y las necesidades productivas propias. Para tubérculos y plantas proteicas, atendiendo a su humedad inicial, se propuso un esquema de secado semicontinuo con dos pases y una tolva para el almacenamiento y reciclo del material. El secador rotatorio requiere 0,7 m de diámetro y de 3,0 m de longitud. Conclusiones: La propuesta desarrollada satisface las demandas productivas con seguridad, eficiencia energética, productividad y sostenibilidad, contribuyendo a la reducción del impacto ambiental y al incremento de la efectividad técnico económica.

Abstract This study examines the perceptions of a group of students regarding the relationships among the construction industry, society, and the environment. It also explores the implementation of CTS (Science, Technology, and Society) education in the formative process of Building Technicians at Federal Institute of Rio Grande do Norte (IFRN) Mossoró Campus. A pedagogical intervention focused on construction waste management was conducted, during which students produced argumentative texts. These texts were then analyzed using content analysis, supported by textual statistics from the IRAMUTEQ software. The results indicate that students feel the training provided to technicians inadequately addresses the socio-environmental impacts of the construction industry. The intervention stimulated reflection on the significance of the topic for the sustainable development of the construction industry, emphasizing the integration of CTS education into the educational journey of the technicians.

Resumo Este estudo analisou as percepções de um grupo de estudantes sobre as relações entre a construção civil, a sociedade e o meio ambiente, bem como o uso da educação CTS no processo formativo dos Técnicos em Edificações formados pelo Instituto Federal do Rio Grande do Norte (IFRN). Para isso, foi realizada uma intervenção pedagógica com o tema gestão de resíduos da construção civil, na qual os alunos produziram textos argumentativos tratados a partir da análise de conteúdo, apoiada na estatística textual do software IRAMUTEQ. Os resultados indicaram que os estudantes consideram que a formação oferecida aos técnicos não aborda adequadamente os impactos socioambientais da construção civil. Além disso, a intervenção promoveu a reflexão sobre a importância do tema para o desenvolvimento sustentável da construção civil, fazendo uso da educação CTS no percurso educacional dos técnicos.

Resumen Este estudio analizó las percepciones de un grupo de estudiantes sobre las relaciones entre la construcción civil, la sociedad y el medio ambiente, así como el uso de la educación CTS en el proceso formativo de los Técnicos en Edificaciones formados por el Instituto Federal de Río Grande do Norte (IFRN). Para ello, se llevó a cabo una intervención pedagógica con el tema de la gestión de residuos de la construcción civil, en la que los estudiantes produjeron textos argumentativos analizados a través del análisis de contenido, respaldado por estadísticas textuales del software IRAMUTEQ. Los resultados indicaron que los estudiantes consideran que la formación proporcionada a los técnicos no aborda adecuadamente los impactos socioambientales de la construcción civil. Además, la intervención fomentó la reflexión sobre la importancia del tema para el desarrollo sostenible de la construcción civil, utilizando la educación CTS en el camino educativo de los técnicos.

ABSTRACT In Chile, the main issues affecting the quality of life of the population include air pollution, scarcity and contamination of water resources, degradation, loss, and pollution of soils, nuisance noise, solid waste management, and loss of biodiversity. In response to this situation, good environmental practices emerge in households, which can be characterized as simple and useful measures that individuals can adopt in their daily lives to reduce the negative environmental impact of their activities. In this context, the article presents the results of a qualitative research aimed at identifying and classifying the environmental practices carried out in households in Metropolitan Valparaíso, Chile. Methodologically, an exploratory-descriptive approach study was conducted, gathering information from 64 households through semi-structured interviews. The results show the implementation of good environmental practices in the household, related to the recycling of organic and non-organic waste, reusing organic and non-organic waste, and reducing the consumption of natural resources. It is concluded that the environmental practices developed by individuals in their households are motivated by a deep concern for environmental issues and seek to reduce the long-term negative consequences that will affect the living conditions of future generations. From an integrated perspective, the good environmental practices carried out in the household represent a silent and persevering microsocial dynamic that challenges the devastating actions of global economic, political, and technological actors regarding the use of natural resources.

RESUMEN En Chile, los principales problemas que afectan la calidad de vida de la población corresponden a contaminación atmosférica, escasez y contaminación de recursos hídricos, degradación, pérdida y contaminación de suelos, ruidos molestos, manejo de residuos sólidos y pérdida de biodiversidad. Como respuesta a esta situación, surgen las buenas prácticas ambientales en el hogar, las que pueden ser caracterizadas como medidas sencillas y útiles que pueden adoptar las personas en su vida cotidiana para reducir el impacto ambiental negativo de sus actividades. En ese marco, el artículo presenta los resultados de una investigación cualitativa cuyo objetivo corresponde a identificar y clasificar las buenas prácticas ambientales realizadas en los hogares de Valparaíso Metropolitano, Chile. Metodológicamente, se realizó un estudio de enfoque exploratorio-descriptivo que recopiló información en 64 hogares, a través de entrevistas semiestructuradas. Los resultados evidencian la realización de buenas prácticas ambientales en el hogar, relacionadas con el reciclaje de residuos orgánicos y no orgánicos, reutilización de residuos orgánicos y no orgánicos; y reducción de consumo de recursos naturales. Se concluye que las prácticas ambientales desarrolladas por las personas en sus hogares son motivadas por una profunda preocupación por los problemas ambientales y buscan disminuir las consecuencias negativas en el largo plazo que afectarán las condiciones de vida de las nuevas generaciones. Desde una perspectiva integrada, las buenas prácticas ambientales realizadas en el hogar representan una dinámica microsocial silenciosa y perseverante que desafía a la acción devastadora que realizan actores económicos, políticos y tecnológicos globales respecto del uso de los recursos naturales.

Abstract Fish processing provides waste of around 50.0% to 70.0% of the animal's initial weight, especially the skin. Thus, this residue contains the by-product that allows biopolymers to be obtained, highlighting collagen, which can be widely used in different areas. The present study aimed to evaluate the yield of collagen extracted from peacock bass Cichla monoculus skin and to characterize them physicochemically. Twenty-five peacock bass with an average weight of 646 ± 175 g were used. The skin samples were removed by manual filleting and weighed, with an average yield of 3.7%. Subsequently, such models were analyzed for chemical composition, showing 61.8% for moisture, 29.3% for crude protein, 1.5% for ash, 6.3% for total lipids, and 1.2% for non-nitrogenous extract (NNE). Acid-soluble collagen (ASC) presented an average yield of 8.2%, presenting in its analysis of centesimal composition 12.5% of moisture, 82.6% of crude protein, 1.1% of ash, 2.6% of total lipids, and 1.2% NNE. The skin and collagen extracted from the tucunaré skin have technological potential for use in the preparation of products, adding value to these by-products from fish processing. 500 50 0 50.0 700 70 70.0 animals animal s Thus byproduct product obtained areas physicochemically Twentyfive Twenty five 64 17 weighed 37 3 7 3.7% Subsequently 618 61 8 61.8 moisture 293 29 29.3 protein 15 1 5 1.5 ash 63 6 6.3 lipids 12 2 1.2 nonnitrogenous non nitrogenous NNE . (NNE) Acidsoluble Acid soluble ASC (ASC 82 8.2% 125 12.5 826 82.6 11 1.1 26 2.6 products byproducts 50. 70. 3.7 61. 29. 1. 6. (NNE 8.2 12. 82. 2. 3. 8.

Resumo O processamento do pescado fornece em resíduos cerca de 50,0% a 70,0% do peso inicial do animal, destacando-se a pele. Assim, nesse resíduo encontra-se o subproduto que permite a obtenção de biopolímeros, dando destaque ao colágeno, que pode amplamente ser utilizado em diversas áreas. O presente estudo objetivou fazer uma avaliação do rendimento do colágeno extraído da pele do tucunaré Cichla monoculus, e caracterizá-los físico-quimicamente. Foram utilizados 25 tucunarés com peso médio de 646 ± 175 g. As amostras de pele foram retiradas por filetagem manual e pesadas, apresentando rendimento médio de 3,7%. Posteriormente, tais amostras foram analisadas quanto à composição centesimal, apresentando os valores de 61,8% para umidade, 29,3% para proteína bruta, 1,5% para cinzas, 6,3% para lipídios totais e 1,2% para extrato não nitrogenado (ENN). Colágeno solúvel em ácido (ASC) apresentou o rendimento médio de 8,2%, apresentando em sua análise de composição centesimal 12,5% de umidade, 82,6% de proteína bruta, 1,1% de cinzas, 2,6% de lipídios totais e 1,2% ENN. A pele e o colágeno extraído da pele do tucunaré apresentam potencial tecnológico para aproveitamento na elaboração de produtos, agregando valor a esses subprodutos provenientes do processamento do pescado. 500 50 0 50,0 700 70 70,0 animal destacandose destacando se Assim encontrase encontra biopolímeros áreas monoculus caracterizálos caracterizá los físicoquimicamente. físicoquimicamente físico quimicamente. quimicamente físico-quimicamente 2 64 17 g pesadas 37 3 7 3,7% Posteriormente 618 61 8 61,8 umidade 293 29 29,3 bruta 15 1 5 1,5 cinzas 63 6 6,3 12 1,2 ENN . (ENN) ASC (ASC 82 8,2% 125 12,5 826 82,6 11 1,1 26 2,6 produtos 50, 70, 3,7 61, 29, 1, 6, (ENN 8,2 12, 82, 2, 3, 8,

ABSTRACT This study aims to stimulate debate on the behavior of geotextile blankets in retaining suspended solids and to offer subsidies for further research. By means of a simple and objective approach, the results of a pilot-scale experiment are presented, with the objective of suggesting the use of containment barriers as a simple and inexpensive technique for raw water pre-filtration. Due to the growing demand for treated water and a marked decrease in the quality of the water available for catchment, it becomes necessary to increase the dosage of chemicals used in the treatment. Consequently, this influences not only the costs but also the characteristics of the waste generated in the process, since the nature and quantity of the sludge depend, among other factors, on the turbidity and the dosage of coagulant chemicals. The experiment was carried out using an acrylic channel where two adequately spaced geotextile blanket barriers were positioned, with raw water from the Parshall flume being pumped into the channel and, after passing through the barriers, returned by gravity to the flume and then sent for treatment. The affluent flow was maintained at 3.5 L/min and the blankets used had a weight of 170.0 and 420.0 g/m2, respectively. The results were not sufficient to conclude whether or not there is a relationship between the average raw water turbidity and the average turbidity reduction by the system. However, they show good chances of reducing sludge generation in water treatment plants receiving raw water pre-filtered by the proposed system, even with the average turbidity reduction considered low. research approach pilotscale pilot scale presented prefiltration. prefiltration pre filtration. filtration pre-filtration catchment Consequently process depend factors positioned 35 3 5 3. Lmin L min 1700 170 0 170. 4200 420 420. gm2 gm g m2 m g/m2 respectively system However prefiltered filtered low 17 42 g/m 1 4

RESUMO Este estudo visa estimular o debate sobre o comportamento das mantas geotêxteis na retenção de sólidos em suspensão e oferecer subsídios para futuras pesquisas. Por meio de uma abordagem simples e objetiva, são apresentados os resultados de um experimento em escala piloto, com o objetivo de sugerir o uso de barreiras de contenção como uma técnica simples e barata para pré-filtração de água bruta. Devido à crescente demanda por água tratada e à acentuada diminuição da qualidade da água disponível para captação, torna-se necessário aumentar a dosagem dos produtos químicos utilizados no tratamento. Consequentemente, isso influencia não só os custos, mas também as características dos resíduos gerados no processo, uma vez que a natureza e a quantidade do lodo dependem, entre outros fatores, da turbidez e da dosagem dos produtos químicos coagulantes. O experimento foi realizado utilizando um canal de acrílico onde foram posicionadas duas barreiras de manta geotêxtil adequadamente espaçadas, sendo a água bruta da calha Parshall bombeada para dentro do canal e, após passar pelas barreiras, devolvida por gravidade à calha e então encaminhada para tratamento. A vazão afluente foi mantida em 3,5 L/min e as mantas utilizadas tinham gramatura de 170,0 e 420,0 g/m², respectivamente. Os resultados não foram suficientes para concluir se existe ou não relação entre a turbidez média da água bruta e a redução média da turbidez pelo sistema. Contudo, apresentam boas chances de redução da geração de lodo em estações de tratamento de água que recebem água bruta pré-filtrada pelo sistema proposto, mesmo com a redução média da turbidez considerada baixa. pesquisas objetiva piloto préfiltração pré filtração captação tornase torna Consequentemente custos processo dependem fatores coagulantes espaçadas 35 3 5 3, Lmin L min 1700 170 0 170, 4200 420 420, gm² gm g m² m g/m² respectivamente Contudo préfiltrada filtrada proposto baixa 17 42 g/m 1 4

ABSTRACT: Millions of tons of fish are filleted each year, and a significant portion of unwanted carcasses is discarded worldwide. An alternative approach to use these materials is through hydrolysis reactions, which allow for the production of compounds with modified technological properties such as solubility, emulsification capacity, foam formation ability, and viscosity. In addition, they may exhibit different biological activities with beneficial effects such as antioxidant, antihypertensive, anticarcinogenic, lipid profile-lowering, and neuroprotective properties. Thus, these compounds can be included in food formulations as promising adjuncts in treatments, with health benefits to consumers. This study discussed the different enzymatic hydrolyses used in the treatment of fish waste and evaluate the compounds and their effects. ABSTRACT year worldwide reactions solubility capacity ability viscosity addition antioxidant antihypertensive anticarcinogenic profilelowering, profilelowering profile lowering, lowering profile-lowering Thus treatments consumers

RESUMO: Milhões de toneladas de peixes são cortados em filés todos os anos, e uma porção significativa de carcaças indesejadas é descartada em todo o mundo. Uma abordagem alternativa para utilização desses materiais é por meio de reações de hidrólise, que permitem a produção de compostos com propriedades tecnológicas modificadas como solubilidade, capacidade de emulsificação, de formação de espuma e viscosidade. Além disso, podem apresentar diferentes atividades biológicas com efeitos benéficos, como propriedades antioxidantes, anti-hipertensivas, anticarcinogênicas, redutoras do perfil lipídico e neuroprotetoras. Assim, esses compostos podem ser incluídos em formulações de alimentos como coadjuvantes promissores em tratamentos, com benefícios à saúde dos consumidores. Este estudo teve como objetivo discutir as diferentes hidrólises enzimáticas utilizadas no tratamento de resíduos de pescado e avaliar os compostos e seus efeitos. RESUMO anos mundo hidrólise solubilidade emulsificação viscosidade disso benéficos antioxidantes antihipertensivas, antihipertensivas anti hipertensivas, hipertensivas anti-hipertensivas anticarcinogênicas neuroprotetoras Assim tratamentos consumidores

Abstract Tilapia is one of the most important aquaculture species due to the desirable characteristics as easy reproduction and quick growth in several farming systems, including the recirculating aquaculture systems RAS. In this, the high flow of water to remove waste casually stimulates the fish to swim backset, and growth performance may be improved. Increasing the speed of swimming can improve performance within certain limits, in which however if exceeded can be harmful. Fish may be exhausted leading to impaired growth or even mortality. The objective of this work was to evaluate the growth performance of tilapia juveniles under sustained swimming exercise at different speeds. Additionally, the fish stocking density effect was tested in the sustained swimming exercise condition. In the first experiment, Nile tilapia juveniles were submitted in triplicates to sustained swimming exercise in speeds of control (not exercised), 1 BL/s (body length per second), 1.5 BL/s and 2 BL/s. In the second experiment, two fish stocking densities were tested in triplicates in sustained swimming exercise in speed of 2 BL/s and control not exercised. Fish growth performance was improved by sustained swimming exercise in speeds up to 2 BL/s. No expressive fish mortalities were observed in both experiments. The comparison between the two stocking densities does not allow us to safely say tilapia can be reared at stocking densities in order of 1,000 fish/m3, even under sustained swimming exercise. Other densities need to be tested. RAS backset limits harmful mortality Additionally condition experiment exercised, exercised , exercised) BLs BL s body second, second) 15 5 1. experiments 1000 000 1,00 fishm3 fishm m3 m fish/m3 100 00 1,0 fish/m 10 0 1,

Abstract The use of mango peel, an agro-industrial byproduct rich in bioactive compounds, was the subject of this study, seeking an innovative application in the manufacture of sliced bread. This process is proposed as a way to create a nutritious and healthy food, rich in dietary fiber and total polyphenols. Mango peel flour of the Kent variety was obtained by drying, grinding, and sieving. An experimental design through the Response Surface Methodology (RSM) with a central composite rotatable design, was used to evaluate the impact of mango peel flour (5% to15%) and ascorbic acid (20 to100 ppm) in the bread formulation. Technological, sensory evaluations, and determinations of polyphenols and dietary fiber were carried out, using standard methods. The results showed that mango peel flour and ascorbic acid influence the texture of the bread, with formulations of 10% mango peel flour and 60 ppm ascorbic acid obtaining the best sensory ratings in color, appearance, aroma, and texture. The mango peel flour increased the fiber up to 13.25 g/100 g and polyphenols up to 1.187 g AGE/g dry weight (DW) in the sliced bread. These findings suggest that the inclusion of mango peel flour improves the nutritional and sensory quality of bread, showing its potential as a functional ingredient in the food industry. agroindustrial agro industrial compounds study drying grinding sieving RSM (RSM 5% 5 (5 to15% to15 20 (2 to10 formulation Technological evaluations out methods 10 6 color appearance aroma 1325 13 25 13.2 g100 100 g/10 1187 1 187 1.18 AGEg AGE DW (DW industry ( to1 2 132 13. g10 g/1 118 18 1.1 g1 g/ 11 1.

Resumo O aproveitamento da casca da manga, subproduto agroindustrial rico em compostos bioativos, foi objeto deste estudo, buscando uma aplicação inovadora na fabricação de pães de forma. Este processo é proposto como forma de criar um alimento nutritivo e saudável, rico em fibras alimentares e polifenóis totais. A farinha de casca de manga da variedade Kent foi obtida por secagem, moagem e peneiramento. Um desenho experimental por meio da Metodologia de Superfície de Resposta (MSR) com um projeto rotativo composto central, foi utilizado para avaliar o impacto da farinha de casca de manga (5% a15%) e do ácido ascórbico (20 a 100 ppm) na formulação do pão. Foram realizadas avaliações tecnológicas, sensoriais e determinações de polifenóis e fibras alimentares, utilizando métodos padronizados. Os resultados mostraram que farinha de casca de manga e ácido ascórbico influenciam na textura do pão, com formulações de 10% de farinha de casca de manga e 60 ppm de ácido ascórbico, assim obtendo as melhores notas sensoriais em cor, aparência, aroma e textura. A farinha de casca de manga aumentou a quantidade de fibra até 13,25 g/100 g e de polifenóis até 1,187 g AGE/g (peso seco) no pão de forma. Esses achados sugerem que a inclusão de farinha de casca de manga melhora a qualidade nutricional e sensorial do pão, mostrando seu potencial como ingrediente funcional na indústria alimentícia. bioativos estudo saudável totais secagem peneiramento MSR (MSR central 5% 5 (5 a15% a15 20 (2 10 tecnológicas padronizados 6 cor aparência 1325 13 25 13,2 g100 g/10 1187 1 187 1,18 AGEg AGE peso seco alimentícia ( a1 2 132 13, g10 g/1 118 18 1,1 g1 g/ 11 1,

Abstract Shalgam juice is a red colored and cloudy traditional fermented beverage produced by lactic acid fermentation of bulgur flour, black carrot, salt, turnip, sourdough, and water. In this study, the usability of grape pomace as a black carrot substitute for the enrichment of shalgam juice with phenolic compounds was investigated. Five different ratios of pomace (0, 25, 50, 75, and 100%) were added to the formulation as a substitute of black carrot and samples were analyzed for pH, acidity, soluble solid content (SSC), color (L*, a*, b*, C*, h, color density, color tone), microbiologically and sensorially during the fermentation to find out the effects of pomace on the progress of the fermentation. The shalgam juice containing only black carrot was used as control. The cloudiness, pH, and brightness of the shalgam juice increased as the pomace ratio increased. The control contained less yeast and mold counts than the pomace containing the shalgam juices. Grape pomace addition did not have an effect on the total mesophilic aerobic and the lactic acid bacteria counts. The sensorial properties of the shalgam juice containing 25% grape pomace were almost the same as the control sample, and as the pomace ratio increased, the shalgam juice samples could not meet the consumer's taste and expectations. In conclusion, when considering microbiological, sensorial and physicochemical properties, 25% grape pomace can be added to formulation before the fermentation as a carrot substitute. flour salt turnip sourdough water study investigated 0, 0 (0 25 50 75 100% 100 pH acidity SSC, SSC , (SSC) L*, L (L* a* b b* C C* h density tone, tone tone) cloudiness juices sample consumers consumer s expectations conclusion microbiological ( 2 5 7 10 (SSC L* (L 1

ABSTRACT Post-consumer carton packaging has the potential to be utilized as raw material in the manufacturing of new products. This research analyzed the performance of partially replacing fine aggregate with Powdered Carton Packaging Waste (PCPW) in mortar development through of collection, preparation, and milling of carton packaging, as well as the characterization of raw materials. Reference and experimental compositions were defined, followed by the execution of technological tests and analysis of the results. X-Ray Fluorescence (XRF) and Scanning Electron Microscopy (SEM) were used to characterize the by-product, PCPW, through chemical analysis. A reference ratio of 1:6 between the volume of cement and fine aggregate was adopted, while Experimental Compositions were determined with substitutions of 5%, 10%, and 15% of the aggregate volume with PCPW. These compositions were molded and tested using five cylindrical specimens per composition. The produced material exhibited consistency within normative parameters. The strengths of the three compositions with replacement fell within the range of 7.57 MPa, 6.52 MPa, and 6.07 MPa, respectively. Water Absorption by Immersion showed satisfactory results. SEM analysis of the fractured surfaces revealed the presence of empty spaces and microfissures in the samples with the highest percentages of PCPW. Postconsumer Post consumer products PCPW (PCPW collection preparation materials defined results XRay X Ray XRF (XRF (SEM byproduct, byproduct product, product by-product 16 1 6 1: adopted 5 5% 10 10% 15 composition parameters 757 7 57 7.5 MPa 652 52 6.5 607 07 6.0 respectively 75 7. 65 6. 60 0

RESUMO Embalagens cartonadas pós-consumo têm potencial para serem utilizadas como matéria-prima na fabricação de novos produtos. Esta pesquisa analisou o desempenho da substituição parcial de agregado miúdo por Resíduos de Embalagens Cartonadas em Pó (RECP) no desenvolvimento de argamassas por meio da coleta, preparo e moagem de embalagens cartonadas, bem como a caracterização de matérias-primas. Foram definidas composições de referência e experimentais, seguidas da execução de testes tecnológicos e análise dos resultados. Técnicas de Fluorescência de Raios X (XRF) e Microscopia Eletrônica de Varredura (MEV) foram utilizadas para caracterizar o subproduto, RECP, por meio de análise química. Foi adotada uma relação de referência de 1:6 entre o volume de cimento e agregado miúdo no traço de referência, enquanto as Composições Experimentais foram determinadas com substituições de 5%, 10% e 15% do volume de agregado por RECP. Estas composições foram moldadas e testadas utilizando cinco corpos de prova cilíndricos por composição. O material produzido apresentou consistência dentro dos parâmetros normativos. As resistências das três composições com reposição ficaram na faixa de 7,57 MPa, 6,52 MPa e 6,07 MPa, respectivamente. A absorção de água por imersão apresentou resultados satisfatórios. A análise por MEV das superfícies fraturadas revelou a presença de espaços vazios e microfissuras nas amostras com maiores percentuais de RECP. pósconsumo pós consumo matériaprima matéria prima produtos RECP (RECP coleta matériasprimas. matériasprimas matérias primas. primas matérias-primas experimentais XRF (XRF (MEV subproduto química 16 1 6 1: 5 5% 10 15 composição normativos 757 7 57 7,5 652 52 6,5 607 07 6,0 respectivamente satisfatórios 75 7, 65 6, 60 0