Resumo: O presente trabalho objetivou analisar a dinâmica socioeconômica e a organização em unidades familiares agroextrativistas da comunidade remanescente do quilombo Rio Gurupá, Município de Cachoeira do Arari, mesorregião do Marajó, estado do Pará. Trata-se de um estudo realizado por meio de pesquisa quanti-qualitativa, sendo os instrumentos metodológicos entrevistas em profundidade e questionários com perguntas abertas e fechadas, aplicados a 39 comunitários, o que representa 26% dos moradores da comunidade. Os resultados indicam que 79% dos produtores possui baixo nível de instrução (ensino fundamental incompleto e analfabetismo). As casas são de madeira, em sua maioria, e há grande carência de saneamento básico e acesso à água tratada. A partir da reconfiguração das atividades produtivas, culturais e ambientais, criamse alternativas para o desenvolvimento das unidades familiares. Contudo, o extrativismo do açaí ainda é a principal atividade de mercado desenvolvida pela comunidade, enquanto as demais são voltadas para o autoconsumo, no período de entressafra do produto principal, ou mesmo, para complementação da renda familiar. A reconstrução e valorização dos recursos naturais e da identidade cultural da comunidade em questão estão intimamente relacionadas ao reconhecimento e incentivo da atividade extrativista, não somente como uma atividade de subsistência, mas como alternativa que pretende atribuir valor econômico à floresta em pé. Palavras-chave: Amazônia; Comunidades tradicionais; Desenvolvimento Sustentável. Abstract:The present work aimed to analyze the socioeconomic dynamics and the organization in agroextractivist family units of the remaining community of quilombo Rio Gurupá, Municipality of Cachoeira do Arari, Marajó, state of Pará. It is a study carried out through quantitative research, Qualitative, with methodological tools being in-depth interviews and questionnaires with open and closed questions, applied to 39 community members, representing 26% of the community's residents. The results indicate that 79% of producers have low level of education (incomplete elementary education and illiteracy). The houses are mostly wood and there is a great lack of basic sanitation and access to treated water. From the reconfiguration of productive, cultural and environmental activities, alternatives are created for the development of family units. However, açaí's extractivism is still the main market activity developed by the community, while the others are aimed at self-consumption, during the off-season of the main product, or even to complement the family income. The reconstruction and valorization of the natural resources and cultural identity of the community in question are closely related to the recognition and incentive of the extractive activity, not only as a subsistence activity, but as an alternative that seeks to attribute economic value to the standing forest.

The objective of this study was to evaluate the efficiency of the enzyme β-1, 3-glucanase and the mechanisms of action produced by yeasts in the biological control ofgreen mold in post-harvest oranges of the pear variety. The Fully Casualized Delineation(FCD) was used. The results were submitted to analysis of variance (ANOVA), in triplicate,compared with Tukey's test at a 5% probability level (p < 0.05), using the statisticalsoftware Sisvar. It was found that the killer activity was observed in 85.7% of the yeastsevaluated. The yeast Candida peltata URM4681 showed better production of β-1.3-glucanase, between 1.071 and 5.422 µg mL -1 . A factorial delineation 2 3 was used in amedium composed of yeast extract, soybean extract and meat extract to increaseenzymatic production, reaching an increase of 4.351 times comparing the assay of lowerand higher activity. The in situ assays showed a reduction in the number of infected fruitstreated with the enzymatic extract, being on average 78.5% when compared with thecontrol treatment (distilled water). As for sporulation, the enzymatic extract, which had anaverage of 8.4 spores, did not differ statistically from the IMZ and TBZ fungicides, both in apreventive and curative manner. Regarding the severity of the disease, it was noted thatthe fruits treated with enzymatic extract, had an average damage of 7.57 %, also notdiffering statistically from fungicides, both preventive and curative. Our studies suggestthat C. peltata URM4681, makes this a good candidate for biocontrol against green mold.

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