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The present study was carried out to evaluate the antioxidant activity of and the content of bioactive compounds in camu-camu fruits harvested at different maturation stages and stored. The fruits were harvested in the municipality of Cantá, Roraima State, Brazil. The experimental design was completely randomized, with three replications, in a factorial arrangement consisting of three different maturation stages (immature, semi-mature and mature) and eight days of storage (3 x 8). The fruits were analysed every day regarding total vitamin C, carotenoids, anthocyanins, flavonoids, total phenolic compounds, and antioxidant activity (FRAP and DPPH). According to the results obtained, the interaction of maturation stages x eight days of storage had a significant effect according to the F test at 5% probability. The highest antioxidant activity (FRAP) was observed in the fruits harvested in the semi-mature stage, providing a longer shelf life. The carotenoid pigment, flavonoid, anthocyanin, and vitamin C contents were higher in the fruits harvested in the mature stage, and this stage was the most suitable for obtaining these functional biocompounds. Additionally, in mature fruits, the highest mean content of total phenolics and antioxidant activity (DPPH) were observed during storage. It was concluded that the mature stage is the most recommended for the extraction of pigments and antioxidant biocompounds from camu-camu fruits. Made available in DSpace on 2022-01-29T02:06:39Z (GMT). No. of bitstreams: 1 A2-2021-Bioactive-compounds-and-antioxidant-activity-of-camu-camu.pdf: 796713 bytes, checksum: 33e89dcd53b73ae1f255b20dd287cfbc (MD5) Previous issue date: 2021

Made available in DSpace on 2019-01-20T23:36:47Z (GMT). No. of bitstreams: 1 PRODUTOSabasedeCUBIU1.pdf: 364303 bytes, checksum: 25e6a37a60efad8d44c7ace873275460 (MD5) Previous issue date: 2019-01-18

Made available in DSpace on 2019-01-20T23:36:57Z (GMT). No. of bitstreams: 1 PADROESMICROBIOLOGICOSCASTANHAS.pdf: 324937 bytes, checksum: ca4f59a6c70d547177e68d949e0259f2 (MD5) Previous issue date: 2019-01-18

Made available in DSpace on 2019-01-19T23:32:41Z (GMT). No. of bitstreams: 1 Qualidadeagroinddefrutosdetapereba1.pdf: 417896 bytes, checksum: cb66ec7370345afa843eeed62c672e76 (MD5) Previous issue date: 2019-01-15

Made available in DSpace on 2019-01-20T23:36:38Z (GMT). No. of bitstreams: 1 PIMENTAJIQUITAIA1.pdf: 360462 bytes, checksum: 749925f08ce02b351048658addd5ff41 (MD5) Previous issue date: 2019-01-18

Made available in DSpace on 2019-01-22T00:06:30Z (GMT). No. of bitstreams: 1 Crescedesenvdefrutosdecupuacuemsistagroflorestais1.pdf: 392664 bytes, checksum: fbcbe02780eb5bee23c5803fa48580b8 (MD5) Previous issue date: 2019-01-18

Este estudo teve como objetivo avaliar a atividade residual, no solo, do herbicida (imazethapyr+imazapic) aplicado na cultura de arroz irrigado, instalado pelo sistema Clearfield® e tendo como planta bioindicadora o milho, cv. Biomatrix 2202. Os trabalhos foram realizados em casa de vegetação da Universidade Federal de Pelotas, Capão do Leão-RS. O arroz, cv. IRGA 422 CL, foi semeado em caixas de polietileno (60 x 40 x 20 cm). Quando o arroz estava em estádio de 3 a 4 folhas, foram aplicados os tratamentos com o herbicida (imazethapyr+ imazapic) a 0; 25+75; 37,5+112,5; e 50+150 g ha-1, que corresponderam a 0, 100, 150 e 200 g ha-1 no produto formulado. Após a colheita do arroz, o solo foi mantido sem irrigação por 45 dias, quando então foi semeada aveia-preta (Avena strigosa), colhida no início da primavera. Aos 360 e 540 dias após a aplicação dos tratamentos (DAA), foi transferido o solo das caixas de polietileno para dois conjuntos de vasos, onde foi semeado milho, os quais passaram respectivamente a ser identificados como experimentos safra (E1) e safrinha (E2). Nos primeiros 360 e 540 dias entre a aplicação dos herbicidas e a semeadura dos dois experimentos, o solo do E2 permaneceu sem irrigação. As plantas de milho foram colhidas, em estádios de 4 a 5 folhas. As variáveis avaliadas foram: massas secas dos sistemas radical e aéreo, altura de planta e índice de área foliar, sendo esta última avaliada somente no E2. Os dados experimentais foram submetidos à análise de variância (