Abstract Hereditary Hemochromatosis is a disorder characterized by iron deposition in several organs and hyperferritinemia. The most studied variants are linked to the HFE gene. In Brazil, surveys that characterize this population are scarce, with no sampling in the state of Rio Grande do Sul. Our objective is to carry out a data collection focusing on the profile of this population and the influence of the most frequently HFE variants. Two centers were enrolled: Hospital de Clínicas de Porto Alegre and Hospital São Vicente de Paulo. Patients with hyperferritinemia and undergoing phlebotomy were invited. Clinical data were collected, including HFE investigation. Among the descriptive data, the allele frequency of the C282Y variant (0.252) stands out, which differs from the national scenario. Systemic arterial hypertension was the most cited comorbidity. Differences between centers were observed, highlighting higher frequency of H63D cases in HSVP (p<0.01). Genotypes were stratified according to deleterious effect of C282Y variant. Higher transferrin saturation and number of phlebotomies were observed in the C282Y/C282Y cases (p<0.001). Positive family history for hyperferritinemia was more prevalent in compound heterozygotes (p<0.01). The results presented confirm the importance of encouraging such studies and reiterate the need for greater attention to this population.

RESUMO Objetivo: Verificar a adesão ao bundle de manutenção do Cateter Venoso Central em uma Unidade de Terapia Intensiva, após intervenção educativa aos profissionais que realizam o cuidado aos pacientes em uso desse cateter. Method: Estudo descritivo-exploratório, realizado em duas fases, fase 1 – intervenção educativa, e fase 2 – verificação/observação da adesão. Os dados foram organizados no Microsoft Excel ® e analisados por meio do Stata®. Resultados: Participaram da fase 1 63 profissionais e da fase 2, 44. A amostra foi constituída de 64 oportunidades de observações. Entre os domínios observados, o registro de indicação de permanência apresentou 8% de taxa de conformidade; a técnica asséptica no manuseio do cateter, 3%; a manutenção do sistema de infusão, 15%; e os cuidados com o curativo do cateter venoso central, 17%. Os domínios representam uma assistência indesejada, conforme o Índice de Positividade de avaliação da qualidade da assistência. Conclusion: Os achados mostram a necessidade de discussões, treinamentos e investimentos em estratégias constantes para a prevenção de infecções primárias de corrente sanguínea relacionadas ao cateter venoso central.

ABSTRACT Objective: To check adherence to the Central Venous Catheter maintenance bundle in an Intensive Care Unit, after an educational intervention to the professionals who provide care to patients using this catheter. Method: Descriptive-exploratory study, carried out in two stages: stage 1 – educational intervention and stage 2 – verification/observation of adherence. Data were organized in the Microsoft Excel® and analyzed through the Stata®. Results: Sixty three workers participated in stage 1 and 44 in stage 2. The sample consisted of 64 observation opportunities. Among the domains observed, the recording of indication of permanence had an 8% compliance rate; aseptic technique in catheter handling, 3%; maintenance of the infusion system, 15%; and care with the central venous catheter dressing, 17%. The domains represent unwanted care according to the Positivity Index for assessing the quality of care. Conclusion: The findings show the need for discussions, training, and investments in constant strategies for the prevention of primary bloodstream infections related to the central venous catheter.

RESUMEN Objetivo: Averiguar la adhesión al bundle de manutención del Catéter Venoso Central en una unidad de terapia intensiva, tras intervención educativa a los profesionales que realizan el cuidado a los pacientes en uso de este catéter. Método: Estudio descriptivo exploratorio, realizado en dos etapas: Etapa 1 – intervención educativa y etapa 2 – averiguación/observación de la adhesión. Los datos fueron organizados en el Microsoft Excel® y analizados a través del Stata®. Resultados: Participaron de la etapa 1 63 profesionales y de la etapa 2, 44. La muestra fue constituida de 64 oportunidades de observaciones. Entre los dominios observados, el registro de indicación de permanencia presentó el 8% de tasa de conformidad, la técnica aséptica en el manejo del catéter, 3%, la manutención del sistema de infusión, 15% y los cuidados con el vendaje del catéter venoso central, 17%. Los dominios representan una asistencia no deseada de acuerdo con el Índice de Positividad de evaluación de la calidad de la asistencia. Conclusión: Los hallazgos demuestran la necesidad de debates, entrenamientos e inversiones en estrategias constantes para la prevención de infecciones primarias de corriente sanguínea relacionadas al catéter venoso central.

Abstract This work aimed to present aspects related to the use of ultrasound in fruit and vegetable processing, such as the functioning of the method, effects on food, applications, sensory aspects and consumer perception. Changes in eating habits and the search for well-being reflect the increased demand for natural foods, such as fruits and vegetables. These foods may undergo microbiological changes along the production chain, and it is necessary to adopt Good Agricultural Practices (GAP), even as handling and technological processes of conservation to ensure the quality of the final product. Ultrasound is an emerging technology applied in fruit and vegetable processing that is related to improvements in quality and preservation. The basic principle of ultrasound is acoustic cavitation, which involves the growth and collapse of bubbles during periods of rarefaction and compression, causing chemical, physical, and mechanical changes in food. These changes are associated with the inactivation of microorganisms, enzymes, as well as the removal of residues and improvements in the physical-chemical quality and accessibility of bioactive compounds. In addition, the application of this method can have good acceptability by consumers looking for more natural foods and that are submitted to processes that does not cause environment impact.

Resumo Este trabalho objetivou apresentar aspectos relacionados à utilização do ultrassom no processamento de frutas e hortaliças, como o funcionamento do método, os efeitos no alimento, as aplicações, os aspectos sensoriais e a percepção dos consumidores. As mudanças dos hábitos alimentares e a busca do bem-estar refletem no aumento da procura por alimentos naturais, como as frutas e as hortaliças. Estes alimentos podem sofrer alterações microbiológicas ao longo da cadeia produtiva, sendo necessária a aplicação de boas práticas agrícolas e de manipulação, e processos tecnológicos de conservação para a garantia da qualidade do produto. O ultrassom é uma tecnologia emergente aplicada no processamento de frutas e hortaliças que está relacionada a melhorias na qualidade e preservação. O princípio básico do ultrassom é a cavitação acústica, que envolve o crescimento e colapso de bolhas durante períodos de rarefação e compressão, causando alterações químicas, físicas e mecânicas no alimento. Essas alterações estão relacionadas à inativação de micro-organismos e de enzimas, à remoção de resíduos e às melhorias na qualidade físico-química, e à acessibilidade de compostos bioativos. Além disso, a aplicação deste método pode ter boa aceitabilidade pelos consumidores, que procuram alimentos mais naturais e submetidos a processos que não causem impacto ambiental.

RESUMO A reforma a seco do metano (RS) é um processo catalítico endotérmico que ocorre entre 700 e 900 oC, capaz de converter CH4 e CO2 (biogás) em H2 e CO (gás de síntese). Trabalhos têm sido elaborados visando o desenvolvimento de catalisadores ideais para a RS, buscando resolver os problemas encontrados, como é o caso da desativação do catalisador por formação de coque, que reduz o desempenho da produção do gás de síntese e pode obstruir o leito catalítico. Em trabalhos anteriores do Laboratório de Materiais e Energias Renováveis (LABMATER) da UFPR, foi desenvolvido o catalisador 20Ni/Si-MCM-41 que possui bom desempenho na conversão de CH4 e CO2 e baixa tendência à formação de coque (≈10 mgC.gcat-1.h-1), tratando-se de um material com carga nominal de Ni de 20% (m/m), suportado em uma peneira molecular a base de sílica mesoporosa (Si-MCM-41) de elevada área específica (≈600 m2 g-1). Entretanto, somente ensaios em unidades experimentais utilizando o catalisador em pó haviam sido realizados para testar a eficiência do material. Neste trabalho, foi utilizada uma unidade piloto contendo um reator contínuo de leito fixo, com o objetivo de avaliar a atividade do catalisador granulado e sua estabilidade na RS, de forma a subsidiar a construção futura de um reformador em escala industrial. Realizou-se quatro experimentos prévios com variação da composição reacional de 40-70% CH4:30-60% CO2, 3 g do catalisador 20Ni/Si-MCM-41 no leito catalítico, temperatura de 800 oC e vazão dos produtos de 36 L.h-1 a 1 atm. Os testes envolvendo variações nas composições de entrada com duração de 4 horas indicaram melhores resultados para a mistura 50% CH4:50% CO2. Também foi realizado um ensaio de 17 horas afim de verificar a estabilidade do catalisador, avaliar a formação de coque durante o tempo de reação e o desempenho da unidade piloto.

ABSTRACT Dry reforming of methane (DRM) is an endothermic catalytic process that occurs between 700 and 900 oC, capable of converting CH4 and CO2 (biogas) into H2 and CO (syngas). Works have been undertaken in view of developing ideal catalyst for DRM, endeavoring to resolve the problems encountered, such as the case of catalyst deactivation due to coke formation, which reduces the performance of syngas production and may block the catalyst layer. In previous works by the Laboratory of Renewable and Materials Energies (LABMATER) at the UFPR, the catalyst 20Ni / Si-MCM-41 was developed, which has a good performance in the conversion of CH4 and CO2 and a low tendency to coke formation (≈ 10 mgC.gcat-1.h-1), being a material with a nominal Ni load of 20% (m / m), supported on a molecular sieve based on mesoporous silica (Si-MCM-41) with a high specific surface (≈600 m2.g-1). However, only tests in experimental units using the catalyst in the powdered form have been performed to test the efficiency of the material. In this work, a pilot unit containing a continuous fixed bed reactor was used, with the objective of evaluating the activity of the granular catalyst and its stability in DRM, in order to subsidize the future construction of a reformer on an industrial scale. Four preliminary experiments were performed with a varying reaction composition of 40-70% CH4: 30-60% CO2, 3 g of the catalyst 20Ni/Si-MCM-41 in the catalyst layer, temperature of 800 oC and a flow rate of the products of 36 Lh-1 at 1 atm. The tests involving variations in the entry compositions with a duration of 4 hours indicated better results for a mixture 50%CH4:50%CO2. Another test of 17 hours was performed, in order to verify the stability of the catalyst and evaluate coke formation during the reaction time and the performance of the pilot unit.

Abstract Fruit juices are on the rise, due to the search new mixes, flavors and nutritional value. This research investigated the acceptance and sensory profile of mixed juices. Sixteen (16) mixed juices with caja, umbu, cocoa and mango flavors were studied, using acceptance and check-all-that-apply (CATA) tests in different cities (n = 226). Juices A1 and D1 had the highest scores in Porto Alegre-RS, Brazil (respectively, 7.15 and 6.91). Differently from Salvador-BA, Brazil, where the highest scores were D2 (6.76) and D3 (6.71). Using CATA, it was shown that customers in the Southern Region characterized samples differently from customers in the Northeastern Region, and the correspondence analysis, showed that consumers in Porto Alegre-RS presented different attributes than those in Salvador-BA, with respect to mixed juices and their acceptance. It is suggested the validity of the consumer data in the characterization of the sensory parameters of the mixed juices and that the familiarity with the fruit flavors interfered in the acceptance of the same.

RESUMO Objetivos: verificar o funcionamento das células ciliadas externas e do sistema olivococlear eferente medial e a integridade das vias auditivas no tronco encefálico até o córtex auditivo, em indivíduos afásicos. Métodos: a amostra foi composta por 20 indivíduos, sendo 10 indivíduos sem afasia e 10 indivíduos afásicos, com idades entre 21 e 58 anos. Os procedimentos utilizados foram: pesquisa das emissões otoacústicas por estímulo transiente sem e com ruído, e potencial cognitivo (estímulo toneburst e de fala). Os achados foram analisados a partir da estatística descritiva. Resultados: o efeito de supressão esteve mais presente nos indivíduos sem afasia quando comparado com os afásicos. No potencial cognitivo, o valor médio das latências P3, mostrou-se dentro dos padrões da normalidade com maior latência nos indivíduos com afasia para o estímulo toneburst em ambas as orelhas. Observou-se diferença estatisticamente significante da amplitude P3-N2 para o estímulo toneburst, comparando as orelhas em ambos os grupos, e para o estímulo de fala apenas à orelha esquerda em ambos os grupos. Conclusões: indivíduos afásicos não apresentaram diferenças significantes quanto à supressão das emissões otoacústicas. Quanto ao potencial cognitivo, os indivíduos afásicos apresentaram maior valor de latência em relação aos indivíduos sem afasia.

ABSTRACT Purpose: to verify the functioning of the outer hair cells and the medial efferent olivocochlear system, and the integrity of the auditory pathways in the brainstem up to the auditory cortex, in aphasic individuals. Methods: the sample comprised 20 individuals - 10 without aphasia and 10 with it, aged from 21 to 58 years. The procedures used were the research of the otoacoustic emissions by a transient stimulus with and without noise, and the cognitive potential (tone-burst and speech stimuli). The findings were analyzed based on descriptive statistics. Results: the suppression effect was more present in individuals without aphasia when compared with the aphasic ones. In the cognitive potential, the mean latency values of P3 was within normality standards, with a higher latency in the individuals presented with aphasia for the tone-burst stimulus in both ears. A statistically significant difference of the P3-N2 amplitude was observed for the tone-burst stimulus, comparing the ears in both groups, and for speech stimulus only to the left ear in both groups. Conclusions: aphasic individuals did not present significant differences regarding suppression of the otoacoustic emissions. As for the cognitive potential, the aphasic individuals presented higher latency values when compared to those with no aphasia.

Resumo A regulação emocional é um construto recente com poucos instrumentos adaptados no Brasil capazes de mensurá-la. Este estudo teve por objetivo buscar evidências de validade de conteúdo, consistência interna e fidedignidade da Escala de Dificuldades de Regulação Emocional (DERS) para o contexto brasileiro. Os participantes foram 402 adultos (78,1% mulheres), com idade entre 18 e 71 anos, sendo 86,8% residentes do Rio Grande do Sul. Para isso, revisou-se uma adaptação do referido instrumento com a finalidade de facilitar a compreensão dos itens. A fim de testar a estrutura mais adequada ao contexto brasileiro, realizou-se uma análise fatorial confirmatória, comparando-se a estrutura do instrumento original com outro validado para o contexto português. Os resultados apontaram que a DERS apresentou boas propriedades psicométricas, com evidências de validade e fidedignidade do instrumento para a amostra brasileira. A estrutura fatorial foi equivalente à da versão original, com seis dimensões.

Abstract Emotional regulation is a recent construct with few adapted instruments in Brazil capable of measuring it. This study aimed to find evidences of content validity, internal consistency and reliability of the Difficulties in Emotion Regulation Scale (DERS) for the Brazilian context. The participants were 402 adults (78.1% women) aged between 18 to 71 years, of which 86.8% resided in Rio Grande do Sul. We revised an adaptation of the referred instrument to facilitate the understanding of the items. In order to test the most appropriate structure to the Brazilian context, we performed a confirmatory factor analysis, comparing the original instrument structure to that validated to Portuguese. The results showed that DERS had good psychometric properties, exhibiting validity and reliability for the Brazilian sample. The factorial structure was equivalent to the original version, containing six dimensions.

Resumen La regulación emocional es una construcción reciente y hay pocos instrumentos adaptados en Brasil capaces de medirla. Este estudio tuvo como objetivo encontrar evidencia de validez de contenido, consistencia interna y confiabilidad de la Escala de Dificultades en la Regulación Emocional (DERS) para el contexto brasileño. Los participantes fueron 402 adultos (78.1% mujeres), con edades comprendidas entre 18 y 71 años, siendo el 86.8% residentes de Rio Grande do Sul. Para ello, se revisó una adaptación del instrumento para facilitar la comprensión de los ítems. Para probar la estructura más apropiada para el contexto brasileño, se realizó un análisis factorial confirmatorio, comparando la estructura del instrumento original con otro validado para el contexto portugués. Los resultados mostraron que la DERS tenía buenas propiedades psicométricas, con evidencia de validez y confiabilidad del instrumento para la muestra brasileña. La estructura factorial era equivalente a la de la versión original, con seis dimensiones.

Abstract Although cow milk is the most widely used dairy product, the milk of other animals presents characteristics relevant to the development of these products. Goat milk has higher digestibility and a lower incidence of allergic reactions than cow milk, while buffalo milk has higher levels of lipids, proteins and lactose. The objective of this work was to elaborate and evaluate the physicochemical, technological, microbiological and sensory characteristics of cream cheese formulations elaborated with different proportions of cow, goat and buffalo milk without whey removal. The milk mixture was allowed to produce cream cheese with high levels of ashes and proteins, and despite the retention of the whey, no occurrence of syneresis was observed in the formulations. The formulation elaborated with 33.33% of each type of milk obtained the highest positive intent to purchase, the highest acceptability index for overall impression and the highest score for the flavor attribute. Considering the number of probiotic microorganisms present in the cream cheese composition, the developed product can be considered a functional food. It is possible to prepare cream cheese with different types of milk and whey retention, creating a competitive product for the market and an alternative for the industry.

Abstract The objective of this study was to develop bionanocomposites from blends of poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) and from 3% and 6% bentonite clay. Initially, the bentonite clay was treated with Praepagen salt, and the properties of the modified clay were evaluated. After the organophilization of the clay was completed, 50:50 blends of PLA/PBAT were prepared, and 3 and 6% clay was added. To test the dispersion of the system, the blending sequence was performed using eight different sequences for the addition of clay to the PLA/PBAT matrices. The mixtures were prepared in a twin screw extruder, and the specimens were subsequently injection molded. The investigated mechanical and morphological properties included the yield strength, yield strain, tensile and bending elastic modulus, and scanning and transmission electron microscopy analyses. The results of this study showed increases of the mechanical properties when nanoparticles were added and the formation of bionanocomposites with intercalated structures.

RESUMO: O Brasil apresenta a maior população de caprinos do continente americano, com mais de nove milhões de cabeças, a caprinocultura é considerada uma atividade em ascensão e de grande importância para a economia, principalmente da região nordeste. No presente trabalho foram determinados o teor de lipídios totais e o perfil de ácidos graxos de amostras de filé e pernil de caprinos juvenil, registrados em órgãos de inspeção do Ministério da Agricultura e comercializados na cidade de Salvador (Bahia). O percentual médio de lipídios totais no filé foi de 1,68±0,04 e no pernil de 4,02±0,09, com diferenças significativas entre os cortes (p<0,05). Foram identificados nos cortes, vinte e sete ácidos graxos, sendo os majoritários os ácidospalmítico (C16:0), esteárico (C18:0) e oleico (C18:1ω9) presentes em 21,32%, 20,39%, 34,49% no filé, e 21,74%, 21,94%, 33,38% no pernil, respectivamente. Os somatórios totais de ácidos graxos saturados e poli-insaturados variaram de 42,75 a 45,23% e de 14,04 a 12,35%, entre os cortes de filé e de pernil, respectivamente. A razão entre AGPI/AGS foi de 0,35 para o filé e de 0,15 para o pernil, e a razão ω6/ω3 foi de 3,07 para o filé e de 2,27 para o pernil. Constatou-se que existe uma diferença significativa no teor de lipídios totais e da composição de ácidos graxos em cortes comerciais de filé e pernil de carne caprina.

ABSTRACT: Brazil has the largest herd of goats of the American continent, with more than 9 million head. Goat farming is considered a growing and important activity for the economy, mainly in the northeastern region of Brazil .In this research, were determined the lipid content and the composition of fillet and shank fatty acids of young goats, registered in the inspection sector of the Ministry of Agriculture and marketed in the city of Salvador (Bahia). The average percentage of total lipids in the fillet was 1.68±0.04 and in the shank of 4.02±0.09, this is a significant difference between the cuts (P<0.05). Twenty-seven (27) fatty acids were identified in the cuts, most are palmitic acid (C16:0), stearic acid (C18:0) and oleic acid (C18:1ω9) present in 21.32%, 20.39%, 34.49% in the fillet and 21.74%, 21.94%, 33.38% in the shank, respectively. The total sums of saturated and polyunsaturated fatty acids ranged of 42.75 to 45.23% and 14.04 to 12.35% between fillet and shank cuts, respectively. The ratio of PUFA/SFA was 0.35 for fillet and 0.15 for shank, and the ratio ω6/ω3 was 3.07 for fillet and 2.27 for shank. Therefore, is a significant difference in total lipid content and fatty acid composition in commercial cuts of beef fillet and shank.

Abstract Different polymeric matrices have been investigated for use in the development of biodegradable films. The incorporation of cellulose nanocrystals in such films has particularly attracted attention because of the potential for achieving improved properties of starch nanocomposites. In the present study, cellulose nanocrystals were extracted from coconut fibers and incorporated in cassava and potato starch films at different concentrations. The properties of the different nanobiocomposite films were comparatively evaluated, including their barrier and mechanical properties. All the films, regardless of the nanocrystal concentration, were found to exhibit low solubility in water, with increased moisture content particularly observed in the films with higher nanocrystal concentrations. The potato starch film with the lowest nanocrystal concentration was found to exhibit the best mechanical properties. The observations of this study indicated that the source of the starch and the nanocrystal concentration determined the properties of the nanobiocomposite films.

O trabalho teve como objetivo desenvolver e caracterizar embalagens ativas flexíveis formuladas pela incorporação de polpas de frutas tropicais a uma matriz polimérica de amido de mandioca plastificada com glicerol, avaliando as propriedades mecânicas, de barreira e a eficácia antioxidante destas embalagens durante o armazenamento. As embalagens foram produzidas por casting, com concentrações fixas de amido de mandioca (4,5%) e glicerol (1,0%), e concentrações de polpa de manga, acerola e seriguela entre 5 e 20%. Foram caracterizadas as propriedades de barreira (espessura, umidade, sólidos totais, atividade de água e solubilidade) e propriedades mecânicas dos filmes. A ação antioxidante dos aditivos incorporados foi avaliada através do armazenamento do azeite de dendê embalado com os filmes contendo os aditivos naturais, monitorando a sua oxidação por 40 dias, sob condições de oxidação acelerada (63%UR/30°C). A adição das polpas de frutas aos filmes promoveu um aumento da resistência mecânica. Os filmes com as polpas incorporadas desempenharam efeito antioxidante sobre o azeite de dendê durante os 40 dias de armazenamento, podendo ser aplicados para o controle da oxidação deste produto.

This research aimed to develop and characterize flexible active packages formulated by the incorporation of pulps from tropical fruits to a polymeric matrix of manioc starch, plasticized with glycerol. The mechanical properties, the barriers and the antioxidant efficacy of these packages were evaluated during storing. The packages were produced by casting, with fixed concentrations of manioc starch (4.5%) and glycerol (1.0%), and variable concentrations of mango, acerola and seriguela pulps between 5 and 20%. The barrier properties (width, humidity, total solids, water activity and solubility) and the mechanical properties of the films were evaluated. The antioxidant action of the additives incorporated was evaluated through the storage of palm oil packed with the films containing the natural additives. Its oxidation was monitored for 40 days, under conditions of accelerated oxidation (63%UR/30ºC). The addition of fruit pulps to the films promoted an increase of the mechanical resistance. The films with the added pulps performed an antioxidant effect on the palm oil during the 40 days storage, which could be applied for the oxidation control of this product.

This study aimed to characterize the publications about coaching in nursing field and analyze how coaching is being used by nursing. It is an integrative literature review, qualitative and descriptive, realized in the data bases Banco de Dados de Enfermagem, Scientific Eletronic Library Online, Literatura Latino-Americana e do Caribe em Ciências da Saúde, National Library of Medicine and CUIDEN. Was used the content analysis to construct the categories: Coaching in Nursing Management, Coaching in Care and Health care Education for Pacients and Coaching in Development Staff Process. Was identify that coaching is used in nursing with international predominance, mostly in staff management, health care education and development of clinical practice. How ever is need to deepen studies about coaching in different settings.

El estudio tuvo como objetivo caracterizar las publicaciones sobre el coaching en el ámbito de la Enfermería y analizar cómo está siendo utilizado en esta área. Se trata de una revisión integradora de literatura cualitativa y descriptiva, realizada en las bases: Banco de Datos de Enfermería, Scientific Eletronic Library Online, Literatura Latino-Americana e do Caribe em Ciências da Saúde, National Library of Medicine y CUIDEN. Fue utilizado el análisis de contenido para construir las categorías: Coaching en Gestión de Enfermería, Coaching en la atención y educación en salud para pacientes, y Coaching en el proceso de desarrollo de personas. Se identificó que el coaching es usado en la Enfermería con predominancia internacional, principalmente en la gestión de personas, educación en salud y desarrollo de la práctica clínica. Sin embargo, es necesario profundizar los estudios sobre el coaching en diferentes contextos.

Composites strengthened with nanocellulose have been developed with the aim of improving mechanical, barrier, and thermal properties of materials. This improvement is primarily due to the nanometric size and the high crystallinity of the incorporated cellulose. Cassava starch films plasticized with glycerol and incorporated with nanocellulose from coconut fibers were developed in this study. The effect of this incorporation was studied with respect to the water activity, solubility, mechanical properties, thermal analysis, and biodegradability. The study demonstrated that the film properties can be significantly altered through the incorporation of small concentrations of nanocellulose.

O objetivo do trabalho foi desenvolver e caracterizar uma embalagem biodegradável, utilizando como matriz polimérica a quitosana, plastificada com glicerol, bem como avaliar o efeito da adição de um aditivo antioxidante natural (urucum) nas embalagens na proteção antioxidante. As embalagens foram preparadas por casting contendo 1,5% de quitosana, 0,15% de glicerol e 0,25 a 1,0% de urucum. O azeite de dendê embalado com os filmes contendo o aditivo foi monitorado aos 0, 7, 15, 30 e 45 dias de armazenamento sob condições de oxidação acelerada (63%UR/30°C). O azeite de dendê embalado no filme que continha o maior percentual de urucum (1,0%) foi o que menos oxidou ao longo do período estudado. Constatou-se que, à medida que aumentam as perdas de Fenóis Totais nas formulações dos filmes, ocorre uma redução nos aumentos do Índice de Peróxidos do produto embalado, demonstrando assim que, ao invés do produto, os compostos da embalagem é quem estão sofrendo oxidação.

The objective was to develop and characterize a biodegradable packaging using chitosan as polymeric matrix, plasticized with glycerol, as well as evaluate the effect of adding a natural antioxidant additives (annatto) in antioxidant protection in packaging. The cans were prepared by casting containing 1.5% of chitosan, 0.15% glycerol and 0.25 to 1.0% of coloring. Palm oil packed with the films containing the additive was monitored at 0, 7, 15, 30 and 45 days of storage under accelerated oxidation conditions (63% UR/30°C). Palm oil packed in the film that contained the highest percentage of annatto (1.0%) was the least oxidized during the study period. It was found that, as they increase the losses of phenolic compounds in the formulations of the films, there is a reduction in the peroxide increases the packaged product, thus demonstrating that instead of the product, the compounds of the package's who are suffering oxidation.