ABSTRACT Purpose To describe the characteristics of the initial public health training for speech-language-hearing therapists in Northeastern Brazil. Methods The research was based on the curricular framework of public higher education institutions in the Northeast. The analysis approached each institution’s general speech-language-hearing program data (state where it is located, total course load, and most recent curricular framework reformulation) and specific data on public health courses (their individual course load, the term when it is offered, syllabus content, whether it was theoretical, practical, both, or internship, and whether it was required or elective). Results The data show that eight public higher education institutions in the Northeast offer speech-language-hearing programs, whose pedagogical frameworks date from 2009 to 2021. The total course load of those related to public health ranges from 7.5% to 20.5% of the total program among those analyzed. Most courses were elective, exclusively theoretical, and were offered in the first half of the program. Conclusion The initial public health training for speech-language-hearing therapists in public higher education institutions in the Northeast still seems to be based on traditional practices. These create a distance between students, public health, and practices that meet the principles of Health Unic System (in Portuguese - Sistema Único de Saúde) and the population’s real needs, especially in primary healthcare

RESUMO Objetivo Descrever as características da formação inicial em saúde coletiva de fonoaudiólogos do Nordeste do Brasil. Método A pesquisa foi realizada com base nas matrizes curriculares de Instituições de Ensino Superior (IES) públicas do Nordeste a partir das quais foram analisados dados gerais dos cursos de Fonoaudiologia de cada Instituição ー estado em que está localizado, carga horária total e última reformulação de matriz curricular; e dados que diziam respeito especificamente às disciplinas relacionadas à Saúde Coletiva ー carga horária de cada disciplina, semestre de oferta, conteúdo da ementa, caráter teórico, prático, teórico-prático ou estágio, se obrigatória ou optativa. Resultados Os dados revelam que existem oito IES públicas do nordeste que oferecem o curso de Fonoaudiologia, sendo que os Projetos Pedagógicos de Cursos datam de 2009 a 2021. A Carga Horária (CH) total das disciplinas vinculadas à área de Saúde Coletiva varia de 7,5% a 20,5% da CH total dos cursos analisados. A maioria destas disciplinas é eletiva, tem caráter teórico e é ofertada na primeira metade da formação. Conclusão A formação inicial em saúde coletiva de fonoaudiólogos de IES públicas do nordeste parece ainda estar embasada em práticas tradicionais, que acabam distanciando os discentes do campo da saúde coletiva e de práticas que atendam os princípios do Sistema Único de Saúde, e as reais necessidades da população, especialmente na Atenção Primária à Saúde.

ABSTRACT Background: Diets with modified consistencies for patients with dysphagia in long term care health institutions may be associated with malnutrition. Objective : To assess the nutritional status of adult patients with cerebral palsy and dysphagia hospitalized in a health institution for more than 10 years. Methods : This prospective investigation was performed in 56 patients with cerebral palsy (ages 25 to 71 years, mean: 44±12 years) and no other neurological diagnosis in hospital stay for more than 10 years had their nutritional status, dysphagia, and food ingestion capacity assessed in two moments with a 12-month interval in between them, respectively using the body mass index, the dysphagia risk assessment protocol (PARD), and the functional oral ingestion scale (FOIS). Results : There were no differences between December 2015 and December 2016 in the patients’ weight, nutritional status, diet consistency classification, PARD, and FOIS. The limits of prescribed diet consistency (IDDSI-FDS) and the assessments of dysphagia and functional eating level influenced the nutritional status. More intense dysphagia and greater eating restrictions were associated with a worse nutritional status. Conclusion : The nutritional status of adult patients with cerebral palsy hospitalized in a health long term institution who had modified diets according to their swallowing and mastication capacity did not worsen between assessments with a 12-month interval in between them. The severity of dysphagia and diet restrictions interfere with the patients’ nutritional status: dysphagia and more intense eating restrictions are associated with a worse nutritional status.

HIGLIGHTS •Diets with modified consistencies may cause malnutrition. •Patients with dysphagia in long term health institutions should ingest the prescribed amount of food to avoid malnutrition. •In patients with cerebral palsy with more intense dysphagia and greater eat restrictions are associated with the worse nutritional status. •The nutritional status of patients with cerebral palsy and dysphagia do not always worsen between assessments with 12-month interval.

RESUMO Contexto: Dieta com consistência modificada para pacientes com disfagia internados em instituições por longa permanência pode causar desnutrição. Objetivo : Avaliar o estado nutricional de pacientes adultos com paralisia cerebral (PC) e disfagia internados em instituição de saúde por mais de dez anos. Métodos : É um estudo prospectivo realizado em 56 pacientes com PC com idades entre 25 e 71 anos, média: 44±12 anos. O estado nutricional, a disfagia e a capacidade de ingestão alimentar foram avaliados em dois momentos, separados por 12 meses, respectivamente pelo índice de massa corporal (IMC), protocolo de avaliação do risco de disfagia (PARD) e pela escala funcional de ingestão por via oral (FOIS), em 56 pacientes com PC internados em instituição hospitalar por mais de 10 anos, sem outro diagnóstico neurológico. Resultados : Não houve diferenças, entre dezembro de 2015 e dezembro de 2016, nas avaliações do peso, do estado nutricional, na classificação da consistência da dieta ingerida, na escala PARD para disfagia e na escala FOIS de avaliação de ingestão por via oral. Houve influência dos limites da consistência da dieta prescrita (IDDSI-FDS), da avaliação da disfagia e do nível funcional da alimentação no estado nutricional. Disfagia mais intensa e maior restrição alimentar foram associadas com pior estado nutricional. Conclusão : Em pacientes adultos com PC, avaliados com intervalo de 12 meses, não houve piora do estado nutricional. A intensidade da disfagia e as restrições alimentares são fatores que interferem no estado nutricional dos pacientes, disfagia e restrições alimentares mais intensas associadas com pior estado nutricional.

Resumen Esta investigación de tipo cualitativa tiene por objetivo analizar las metáforas lingüísticas y conceptuales sobre la política educativa chilena en columnas de opinión publicadas en diferentes periódicos digitales del país. Se aplicó un procedimiento de identificación de usos metafóricos y un análisis de contenido metafórico. De esta manera se evidenció la aparición reiterada de dos grupos de metáforas lingüísticas sobre la institucionalidad educativa en Chile: uno que la conceptualiza como un edificio y otro, como un camino. Ahora bien, estos conjuntos de metáforas lingüísticas pueden adquirir características conceptuales y discursivas específicas en una misma columna. Así, se concluye que las metáforas lingüísticas sobre la política educativa, si bien se basan en metáforas conceptuales más generales y convencionalizadas en la lengua, su desarrollo en las columnas se orienta en virtud del tópico común de discurso y de propósitos persuasivos particulares. Entre estos destacan la crítica a diferentes actores o procesos político-educativos, tales como el sistema educativo chileno, los gobiernos de turno o las movilizaciones sociales.

Abstract This qualitative research aims to analyze linguistic and conceptual metaphors about Chilean educational policy, as read in op-ed pieces from different online newspapers in the country. Both a procedure for identifying metaphorical uses and an analysis of metaphorical content were applied. By doing so, there was evidence on the repeated appearance of two groups of linguistic metaphors about Chilean educational policy: one which conceptualizes it as a building and the other as a road. These sets of linguistic metaphors can acquire specific conceptual and discursive features in the same opinion piece. Thus, the conclusion is that, while each group of linguistic metaphors is based on common and conventionalized conceptual metaphors, their development in the columns is specially oriented by the common topic of discourse and particular persuasive purposes. Most notably, criticism against different political-educational actors and processes, such as the Chilean educational system, the governments, or grassroots movements.

ABSTRACT. The aim of this study was to evaluate the phenotypic variation and diversity of cassava for breeding purposes based on the pasting properties of starch, for food applications. The viscosities of the starches, extracted from 1031 accessions, were obtained using a Rapid Visco Analyzer. The best linear unbiased predictors were calculated for five critical points of the viscograms, which were then used to cluster the accessions based on the discriminant analysis of principal components. The wide phenotypic variation identified from the viscograms reveals the high potential for selection gains, especially for pasting temperature and setback. Certain strong correlations indicate that selection based on a specific viscogram trait can be used for indirect selection (e.g., the correlation between peak viscosity and breakdown [0.85]). The lowest Bayesian information criterion identified five different groups. Groups 3 and 4 exhibited high pasting temperatures, while Groups 3 and 5 exhibited low setbacks. Group 3 also exhibited low viscosity and breakdown. However, we focused on selecting cassava accessions with a high pasting temperature and low setback, as these are the most important traits for industrial applications. The predicted genetic gains from the selection of the top 15 cassava accessions for increasing pasting temperature and decreasing setback were 4.40% and 53.17%, respectively. The increased pasting temperature (~72.89°C) and high amplitude of setback (~600 cP) due to selection can guide the utilization of the cassava germplasm for breeding and provide a basis for further studies to develop varieties with added value, especially in the food industry.

Resumo Este trabalho busca apreender os desafios que perpassam o processo, em curso, de inserção de alimentos da sociobiodiversidade na alimentação escolar, no município de Mostardas, no Rio Grande do Sul, bem como analisar os possíveis resultados desse movimento in loco. A respeito do percurso metodológico, em decorrência do contexto pandêmico de covid-19, foram realizadas entrevistas por telefone e/ou pelo aplicativo WhatsApp© com atores que tivessem, de algum modo, envolvimento no processo de inclusão de alimentos da sociobiodiversidade no Programa Nacional de Alimentação Escolar, como nutricionistas, comunidade escolar, entidades locais, agricultores(as) familiares e pesquisadores(as). Assim, recorreu-se à abordagem qualitativa, tanto para a geração do material empírico quanto para a análise dos dados. Acerca dos resultados, foram identificados desafios relacionados ao plano da produção, do consumo e do abastecimento. E, ainda, no âmbito das políticas públicas, foram constatados entraves relacionados ao acesso a determinados programas federais, burocracia dos processos e falta de iniciativas por parte do poder público local. Com relação aos possíveis desdobramentos do movimento em questão, os participantes manifestaram repercussões sobre a saúde, a qualidade da alimentação, o meio ambiente e a economia local, o que impactaria positivamente sobre a Soberania e a Segurança Alimentar e Nutricional.

Abstract This work seeks to understand the challenges that permeate the ongoing process of inserting sociobiodiversity foods into school meals, in the municipality of Mostardas, Rio Grande do Sul, and to analyze the possible results of this movement in loco. Regarding the methodological course, due to the covid-19 pandemic context, interviews were carried out by phone call and/or by the WhatsApp© application with actors who were somehow involved with the process of inclusion of sociobiodiversity foods in the National School Feeding Program, such as nutritionists, the school community, local entities, family farmers, and researchers. Thus, a qualitative approach was used, both for the generation of empirical material and for data analysis. Regarding the results, challenges related to the production, consumption, and supply plan were identified. And yet, in the scope of public policies, obstacles related to access to certain federal programs, bureaucracy of processes, and lack of initiatives on the part of the local government were found. Regarding the possible developments of the movement in question, the participants expressed repercussions on health, food quality, the environment, and the local economy, which would positively impact Food and Nutrition Sovereignty and Security.

ABSTRACT Drimys brasiliensis Miers, popularly known as cataia, is a tree species native to the Atlantic Forest that has phytochemical, phytotherapeutic, aromatic and economic importance, with wide use in folk medicine. It is considered a species of difficult multiplication via seeds, presenting dormancy due to embryonic immaturity. Thus, the objective of this study was to analyze the vegetative rescue, in vitro establishment and propagation by way of cuttings of Drimys brasiliensis. For the rescue, the girdling techniques were applied at 30 and 90 cm from the ground, semi-girdling at 30 cm from the ground and pruned branches conditioned vertically and horizontally, being evaluated the shoot emission capacity. With the shoots obtained by vegetative rescue, the explants used for in vitro establishment were made, evaluating different immersion times in sodium hypochlorite 1.0 % (v/v) (0, 10, 15 and 20 minutes). The percentages of total, bacterial, fungal contamination and phenolic oxidation were evaluated. On the cuttings, shoots from vegetative rescue, from the aerial part of an adult individual and from detached branches were tested and placed in a mini-tunnel. The percentage of cuttings survival, percentage of cuttings with callus and percentage of rooting were evaluated. Regarding the vegetative rescue, the technique of pruned branches resulted in the induction of shoots, highlighting the branches conditioned vertically (100%). In the in vitro establishment, the immersion in sodium hypochlorite (1%) for 20 minutes proved to be efficient in the control of fungal contamination, however, no significant differences were observed in relation to the control of bacterial contamination. In cuttings, the use of cuttings from pruned branches or girdling/semi-girdling showed potential for these techniques in the cloning of the species, obtaining results close to 10% rooting. In general, the species has the potential for vegetative propagation, however, adjustments are necessary in the in vitro establishment and cutting protocols.

RESUMO Drimys brasiliensis Miers, conhecida popularmente por cataia, é uma espécie arbórea nativa da Mata Atlântica que apresenta importância fitoquímica, fitoterapêutica, aromática e econômica, com amplo uso na medicina popular. É considerada uma espécie de difícil multiplicação via sementes, apresentando dormência por imaturidade embrionária. Assim, objetivou-se com este estudo analisar o resgate vegetativo, estabelecimento in vitro e a propagação via estaquia de Drimys brasiliensis. Para o resgate, realizou-se a aplicação das técnicas de anelamento a 30 e 90 cm do solo, semianelamento a 30 cm do solo e galhos podados acondicionados vertical e horizontalmente, sendo avaliada a capacidade de emissão de brotações. Com as brotações obtidas pelo resgate vegetativo, foram confeccionados os explantes utilizados para o estabelecimento in vitro, avaliando diferentes tempos de imersão em hipoclorito de sódio 1,0 % (v/v) (0, 10, 15 e 20 minutos). Foram avaliadas as percentagens de contaminação total, bacteriana, fúngica e oxidação fenólica. Na estaquia foram testadas brotações oriundas do resgate vegetativo, da parte aérea de indivíduo adulto e de galhos destacados e acondicionados em mini-túnel. Avaliaram-se a porcentagem de sobrevivência das estacas, porcentagem de estacas com calos e porcentagem de enraizamento. Em relação ao resgate vegetativo, a técnica de galhos podados resultou na indução de brotações, destacando os galhos acondicionados verticalmente (100%). No estabelecimento in vitro, a imersão em hipoclorito de sódio (1%) por 20 minutos se mostrou eficiente no controle da contaminação por fungos, entretanto, não foram observadas diferenças significativas em relação ao controle de contaminação bacteriana. Na estaquia, o uso de estacas provenientes de galhos podados ou anelamento/semianelamento mostrou potencial para estas técnicas na clonagem da espécie, obtendo resultados próximos a 10% de enraizamento. No geral, a espécie apresenta potencial de propagação vegetativa, contudo, são necessários ajustes nos protocolos de estabelecimento in vitro e estaquia.

Polymers are options as antimicrobials for skin protection, antifouling surfaces, and fabrics. Here we analyzed the interaction of polymers based on poly(methacrylate) (PMMA) and poly((dimethylamino ethyl) methacrylate) (PDMAEMA) with model membranes and bacteria. We used the homopolymers PMMA, PDMAEMA, and the diblock copolymer(s) prepared with different PMMAm:PDMAEMAn ratios (m/n). The interactions of PDMAEMA and PMMAm-b-PDMAEMAn with large unilamellar vesicles (LUVs) prepared with phosphatidylcholine and phosphatidylglycerol at different pHs, were analyzed by nuclear magnetic resonance (NMR), dynamic light scattering, and zeta potential. These polymers promoted LUVs leakage of a fluorescent probe (5,6-carboxyfluorescein) localized exclusively in the internal aqueous compartment. Interestingly, all copolymers exhibit a bell-shaped pH dependence for the polymer-induced LUVs leakage. The interaction of the positively charged polymers and the pH effect was also demonstrated using giant unilamellar vesicles. These copolymers inhibited bacterial growth in the micromolar range and can be used to prevent bacterial growth on surfaces.

Abstract Twenty six sweet cassava clones were evaluated in two agricultural years, in randomized block design, with 3 replications and plots with 25 plants. The harvests were at 12 months after planting, in both years. The traits evaluated were root yield (RY), dry matter content (DMC), total carotenoids content (TC), β-carotene content (BC), trans-β-carotene content (TrBC) and total cyanide content (TCy). Genotype was significant (P<0.05) in all traits. Broad-sense heritability estimates at the plot level ( h m g 2 ) ranged from 77% (RY) to 93% (TC and TrBC), while the accuracy ranged from 0.88 (RY) to 0.96 (BC and TrBC). The genetic correlations among TC, BC and TrBC were high (0.96 to 0.99) and significant, and the genetic correlations involving these traits and TCy were negative. These results demonstrate the existence of great genetic variability in characteristics important to cassava biofortification and, consequently, great perspectives in the breeding for this purpose.

Abstract This work seeks to understand the challenges that permeate the ongoing process of inserting sociobiodiversity foods into school meals, in the municipality of Mostardas, Rio Grande do Sul, and to analyze the possible results of this movement in loco. Regarding the methodological course, due to the covid-19 pandemic context, interviews were carried out by phone call and/or by the WhatsApp© application with actors who were somehow involved with the process of inclusion of sociobiodiversity foods in the National School Feeding Program, such as nutritionists, the school community, local entities, family farmers, and researchers. Thus, a qualitative approach was used, both for the generation of empirical material and for data analysis. Regarding the results, challenges related to the production, consumption, and supply plan were identified. And yet, in the scope of public policies, obstacles related to access to certain federal programs, bureaucracy of processes, and lack of initiatives on the part of the local government were found. Regarding the possible developments of the movement in question, the participants expressed repercussions on health, food quality, the environment, and the local economy, which would positively impact Food and Nutrition Sovereignty and Security.

Resumo Este trabalho busca apreender os desafios que perpassam o processo, em curso, de inserção de alimentos da sociobiodiversidade na alimentação escolar, no município de Mostardas, no Rio Grande do Sul, bem como analisar os possíveis resultados desse movimento in loco. A respeito do percurso metodológico, em decorrência do contexto pandêmico de covid-19, foram realizadas entrevistas por telefone e/ou pelo aplicativo WhatsApp© com atores que tivessem, de algum modo, envolvimento no processo de inclusão de alimentos da sociobiodiversidade no Programa Nacional de Alimentação Escolar, como nutricionistas, comunidade escolar, entidades locais, agricultores(as) familiares e pesquisadores(as). Assim, recorreu-se à abordagem qualitativa, tanto para a geração do material empírico quanto para a análise dos dados. Acerca dos resultados, foram identificados desafios relacionados ao plano da produção, do consumo e do abastecimento. E, ainda, no âmbito das políticas públicas, foram constatados entraves relacionados ao acesso a determinados programas federais, burocracia dos processos e falta de iniciativas por parte do poder público local. Com relação aos possíveis desdobramentos do movimento em questão, os participantes manifestaram repercussões sobre a saúde, a qualidade da alimentação, o meio ambiente e a economia local, o que impactaria positivamente sobre a Soberania e a Segurança Alimentar e Nutricional.

Biochar from slow pyrolysis under controlled conditions is favorable in the transformation of waste into materials that serve as soil conditioners, and/or environmental remediation. Thus, this work aimed to produce and characterize biochar from cassava waste under different temperature conditions and evaluate interactions with Ca2+ and Pb2+ for agricultural and environmental applications. To investigate the efficiency of the interaction of biochar with nutrients (Ca) and contaminants (Pb), the influence of pH and contact time were evaluated. There was an increase in pH, pHzpc (zero point charge), and condensed aromatic structures in BC, due to the increase in pyrolysis temperature. Also, biochar demonstrated a Pb2+ adsorbed amount of 2.03 to 2.37 mg g-1 and a Ca2+ release capacity of 0.655 to 0.765 mg g-1. In this way, biochar produced from residues of cassava waste can be a viable strategy to enhance agricultural production and reduce environmental contaminants.

Resumen Nasutitermes corniger es una termita arbórea que causa daños económicos en las zonas urbanas, y su control es mediante insecticidas químicos. Una alternativa para el control de insectos es el uso de hongos entomopatógenos y extractos de plantas, o el efecto sinérgico de la asociación de estos. Se examinó la toxicidad de los extractos acuosos e hidroetanólicos de Agave sisalana sobre los aspectos biológicos de los hongos Cordyceps farinosa, C. fumosorosea y C. javanica y la acción de los extractos y su efecto sinérgico sobre N. corniger. Se evaluó el efecto de los extractos sobre hongos por germinación, esporulación y crecimiento micelial de los hongos en medio Sabouraud mediante el estudio de aspectos biológicos bajo condiciones de laboratorio y se examinó el control de N. corniger, por ingestión de extractos y de la asociación extracto y hongo sobre papel de filtro, siendo el porcentaje de mortalidad de soldados y obreras de la termita diaria. En general, los extractos resultaron inofensivos para los hongos a concentraciones de 10, 25, 50, 100 y 200 mg.mL-1. Los extractos demostraron acciones termiticidas a las concentraciones ensayadas, provocando la mortalidad de alrededor del 100% de los trabajadores después del tercer y sexto día (LC50: 0.778 a 0.803 mg.mL-1) y del 100% de los soldados entre el cuarto y séptimo días (LC50: 0.146 a 0.956 mg.mL-1). La asociación de los extractos con C. farinosa ESALQ1355 fue más eficiente para inducir la mortalidad en N. corniger. Estos resultados demostraron la eficiencia in vitro de los extractos de sisal en el control de las termitas de N. corniger, solas o en combinación con hongos, lo que sugiere su potencial utilidad conjunta en el control biológico de plagas de insectos.

Abstract Nasutitermes corniger is an arboreal termite that causes economic damage in urban areas, and its control is for chemical insecticides. An alternative for insect control is the use of entomopathogenic fungi and plant extracts, or the synergistic effect of the association of these. The toxicity of aqueous and hydroethanolic extracts of Agave sisalana on the biological aspects of the fungal Cordyceps farinosa, C. fumosorosea and C. javanica and the action of the extracts and their synergistic effect on N. corniger was examined. The effect of the extracts on fungi was evaluated by germination, sporulation and mycelial growth of fungi in Sabouraud medium through the study of biological aspects under laboratory conditions; and control of N. corniger were examined, by ingestion of extracts and of the association extract plus fungus on filter paper, being the percentage of mortality of soldiers and workers of the termite daily. In general, the extracts were inoffensive to the fungi at concentrations 10, 25, 50, 100 and 200 mg.mL-1. The extracts demonstrated termiticidal actions at concentrations tested, causing the mortalities about 100% of the workers after the third and sixth days (LC50: 0.778 to 0.803 mg.mL-1) and 100% of the soldiers between the fourth and seventh days (LC50:0.146 to 0.956 mg.mL-1). The association of the extracts with C. farinosa ESALQ1355 was more efficient in inducing the mortality in N. corniger. These results demonstrated the efficiency in vitro of the sisal extracts in controlling N. corniger termites, alone or in combination with fungi, suggesting their potential joint usefulness in the biological control of insect pests.

Abstract Objective: Continuous Positive Airway Pressure (CPAP) is the gold standard treatment for OSA. A wide variety of masks are used during CPAP therapy. The aim of the study is to compare polysomnography outcomes during titration for different types of masks (oronasal, nasal and pillow) and assess the impact on PAP titration. Methods: We retrospectively analyzed all CPAP titration polysomnography for one year. Anthropometric data and baseline apnea severity were documented. Results: A total of 497 patients were evaluated. Nasal masks were used in 82.3% (n = 409), pillow in 14.1% (n = 70) and oronasal in 3.6% (n = 18). There was no difference according to body mass index and baseline apnea-hypopnea index among the groups. The oronasal group was older and had higher titrated CPAP pressure, higher residual apnea-hypopnea index, lower sleep efficiency, more superficial N1 sleep and longer wake time after sleep onset. All other polysomnography outcomes were similar among the groups. The mean CPAP level was 11.6 ± 2.1 cm H2O for the oronasal mask, 10.1 ± 2.1 cm H2O for the nasal mask and 9.8 ± 2.2 cm H2O for the pillow. The residual apnea-hypopnea index was 10.4 ± 7.9 for the oronasal mask, 5.49 ± 5.34 events/h for the nasal mask and 4.98 ± 5.48 events/h for the pillow. The baseline apnea-hypopnea index was correlated with of a higher CPAP pressure for all the groups (p< 0.001 for the nasal group, p = 0.001 for the pillow group and p = 0.049 for the oronasal group). Body mass index and residual AHI were correlated with of a higher CPAP pressure for the nasal and pillow groups only (p < 0.001). Conclusion: The interface can have a significant impact on the effectiveness of PAP titration. Patients with oronasal masks have higher CPAP pressure, higher residual apnea-hypopnea index, lower sleep efficiency and higher wake time after sleep onset. Oronasal masks should not be recommended as the first choice for apnea patients. Level of evidence: Level 3.

Abstract The objective of this research was to evaluate the presence of physical dormancy in seeds of Psidium cattleianum (araçá), obtained from fruits of different stages of maturation. The fruits were collected from 15 parent plants in the municipality of Lages-SC and classified, according to the Munsell color chart, in yellowish red (5YR5 / 7), red (10R5 / 6) and dark red (10R3 / 6). After beneficiation, with the aid of a sieve and running water, the seeds of the fruits of the three colors were evaluated for: water content, dry mass, first germination count, germination, abnormal seedlings, dead seeds, first emergency count, emergency, days to start the emergency, emergency speed index, water soak curve and methylene blue soak. The water contents were 22.02, 23.53 e 23.08%, for seeds of colors 1, 2 and 3, respectively. There was no significant difference between the seeds of the fruits of the three colors for all variables analyzed, except for the emergence speed index, where seeds of colors 2 fruits were more vigorous in relation to the seeds of the other colors. The soaking process was characterized by a three-phase curve, with root protrusion starting at 275, 323, 323 hours, for fruit seeds of colors 1, 2 and 3, respectively. Methylene blue entered the seeds on the first day, with complete absorption in 371 h (16 days). The results showed that the seeds of the three colors of the fruit were already at physiological maturity, with similar results in relation to the dry mass. It is concluded that mature seeds of Psidium cattleianum Sabine do not have physical dormancy, regardless of the colors of the fruits studied.

Resumo Objetivou-se com o trabalho avaliar a presença de dormência física em sementes de Psidium cattleianum (araçá), obtidas de frutos de diferentes estádios de maturação. Os frutos foram coletados em 15 plantas matrizes no município de Lages-SC e classificados, de acordo com a tabela de cores de Munsell, em vermelho amarelado (5YR5/7), vermelho (10R5/6) e vermelho escuro (10R3/6). Após o beneficiamento, com auxílio de peneira e água corrente, as sementes dos frutos das três colorações foram avaliadas quanto: teor de água, massa seca, primeira contagem de germinação, germinação, plântulas anormais, sementes mortas, primeira contagem de emergência, emergência, dias para iniciar a emergência, índice de velocidade de emergência, curva de embebição em água e embebição em azul de metileno. Os teores de água estavam em 22,02; 23,53 e 23,08% para as sementes das colorações 1, 2 e 3, respectivamente. Não houve diferença significativa entre as sementes dos frutos das três colorações para todas as variáveis analisadas, exceto para o índice de velocidade de emergência, em que sementes de frutos da coloração 2 demonstraram-se mais vigorosas em relação às sementes das demais colorações. O processo de embebição em água foi caracterizado por uma curva trifásica, com início da protrusão radicular em 275, 323, 323 horas, para sementes de frutos de colorações 1, 2 e 3, respectivamente. Observou-se entrada do azul de metileno nas sementes já no primeiro dia, com absorção completa em 371 h (16 dias). Com base nos resultados obtidos, verifica-se que as sementes das três colorações do fruto já estavam na maturidade fisiológica, com resultados semelhantes em relação à massa seca. Conclui-se que sementes maduras de Psidium cattleianum Sabine não possuem dormência física, independente da coloração dos frutos estudados.

RESUMO O objetivo desse trabalho foi avaliar desempenho agronômico, tempo de cozimento e conservação pós-colheita de raízes de clones de mandioca de mesa, para selecionar aqueles superiores à testemunha Manteiga, na região do Baixo Sul do estado da Bahia. O delineamento foi em blocos casualizados e em esquema de parcelas subdivididas, com três repetições. Onze clones foram avaliados aos 10 e 12 meses após o plantio. Na média das duas colheitas, BRS Kiriris e Saracura tiveram produção total de raízes (39,85 e 33,91 t ha−1, respectivamente) e produção de raízes comerciais (26,54 e 26,71 t ha−1) superiores, comparados ao Manteiga (produção total de raízes: 28,06 t ha−1, produção de raízes comerciais: 16,95 t ha−1). Entretanto, ambos tiveram tempo de cozimento (26,76 e 28,30 min, respectivamente) maiores que o do Manteiga (23,89 min), e BRS Kiriris foi instável com relação à porcentagem de cozimento entre 10 (91,67%) e 12 meses (50%). BRS Aipim Brasil, 2003 14-11, BRS Kiriris, Eucalipto, Saracura e Manteiga foram mais tolerantes à deterioração fisiológica de pós-colheita. Embora alguns dos clones avaliados tenham apresentado bom desempenho nas características avaliadas, analisando-se o conjunto de características, nenhum deles apresenta superioridade suficiente para ser indicado como um potencial substituto do Manteiga, cultivado na região do Baixo Sul do estado da Bahia.

ABSTRACT The objective of this work was to evaluate the agronomic performance, cooking time and postharvest conservation of roots of sweet cassava clones, to select those superior to the Manteiga variety control, in the Baixo Sul region of Bahia state. A randomized block design in split plot scheme, with three replications was used. Eleven genotypes were evaluated at 10 and 12 months after planting. Considering the mean of two harvests, BRS Kiriris and Saracura showed total root yield (39.85 and 33.91 t ha−1, respectively) and commercial root yield (26.54 and 26.71 t ha−1) that are higher compared to Manteiga (total root yield: 28.06 t ha−1, commercial root yield: 16.95 t ha−1). However, both had cooking time (26.76 and 28.30 min, respectively) higher than that of Manteiga (23.89 min), and BRS Kiriris was unstable regarding the cooking percentage between 10 (91.67%) and 12 months (50%). BRS Aipim Brasil, 2003 14-11, BRS Kiriris, Eucalipto, Saracura and Manteiga were more tolerant to postharvest physiological deterioration. Although some of the evaluated clones presented good performance in the evaluated traits, by analyzing the set of traits, none of them shows sufficient superiority to be indicated as a potential substitute for Manteiga, grown in the Baixo Sul region of Bahia state.

Terpenes are the most abundant class of natural product that exist in nature. They possess a myriad of industrial applications including pharmaceutical, perfumery and flavors, bulk chemicals, and fuel. Intriguingly, until today, the vast majority of characterized terpenoids have been isolated from plants and fungi, and only in recent years bacteria were found to generate a representative reservoir of terpenoids molecules. Mining Streptomyces sp. CBMAI 2042 genome data has revealed the presence of five terpene cyclase genes. Chemical analysis of mycelium extract of this bacteria strain has unveiled at least 28 volatile terpenes molecules, where three encoding sesquiterpene cyclase (STC) genes are apparently responsible for their biosynthesis. The cyclic products obtained by incubation of these three purified recombinant STCs with farnesyl diphosphate (FPP) were analyzed by gas chromatography-mass spectrometry (GC-MS) and identified using the Van den Dool and Kratz equation.