The family farming from the Borborema Territory-PB, Brazil, produces sweet oranges that supply the regional market. In this context, it is necessary to define standards of identity and quality, as well as to quantify the bioactive compounds in the fruit, in view of adding value and creating more competitive markets. This work sought to evaluate the quality, bioactive compounds and total antioxidant activity (TAA) of oranges from family farming. A 33 factorial completely randomized design was used, with three cultivars (Baía, Comum, Mimo-do-Céu) and three maturity stages (predominantly green, green/yellow, yellow), with 60 replications of 1 fruit for the physical evaluations, and 4 of 15 fruit for the others. The whole fruits were evaluated by color index, length, diameter, fresh weight and firmness. The juice was assessed for yield, pH, soluble solids (SS), titratable acidity (TA), SS/AT ratio, and ascorbic acid. Total extractable polyphenols (TEP) and ABTS •+ and DPPH • total antioxidant activity (TAA) were measured in the juice and albedo. The 'Baía' and 'Mimo-do-Céu' oranges presented quality parameters aligned with the CEAGESP standards. On average, the ascorbic acid content was higher than 45 mg 100 g -1 , with 'Mimo-do-Céu' presenting the highest content (50.26 mg 100 g -1 ). During maturation, the firmness decreased, and the SS, TEP and TAA of the juice and the albedo increased. In general, the TEP content was about eight-fold higher in the albedo than juice, corresponding to the much higher TAA in this portion, thereby highlighting its higher functional potential, especially for 'Baía' orange. QUALIDADE, COMPOSTOS BIOATIVOS E ATIVIDADE ANTIOXIDANTE DURANTE A MATURAÇÃO DE LARANJAS PRODUZIDAS NO TERRITÓRIO DA BORBOREMARESUMO -A agricultura familiar do Território da Borborema-PB, produz laranjas doces que supre o mercado regional. Nesse contexto, se faz necessária a definição de padrões de identidade e qualidade, bem como quantificar os compostos bioativos nas porções do fruto buscando a agregação de valor, visando mercados mais competitivos. O objetivo deste trabalho foi avaliar a qualidade, compostos bioativos e atividade antioxidante de laranjas da citricultura familiar. Utilizou-se um DIC, fatorial 3x3, com três cultivares ('Baía', 'Comum' e 'Mimo-do-Céu'), três estádios de maturação C1 (predominantemente verde); C2 (verde amarelado) e C3 (amarelo), com 60 repetições de um fruto para as avaliações físicas e 4 de 15 frutos para as demais. As avaliações no fruto inteiro foram: índice de coloração, comprimento, diâmetro, massa fresca e firmeza. No suco foram avaliados: rendimento, pH, sólidos solúveis, acidez titulável, SS/AT e ácido ascórbico. Os polifenóis extraíveis totais (PET) e atividade antioxidante total (AAT) foram determinados pelos métodos ABTS •+ e DPPH • no suco e albedo. As laranjas 'Baia' e 'Mimo-do-Céu' apresentam parâmetros de qualidade que se enquadram nas Normas do CEAGESP. Em média o teor de ácido ascórbico foi superior a 45 mg.100g -1 , sendo a 'Mimo-do-Céu' com maior teor (50,26 mg.10...
The high rate of fruit decay and berry drop reduces quality and increases postharvest losses in 'Isabel' grapes, requiring pre-harvest and postharvest management practices available to the small-scale farmer, which maintain quality and extend postharvest life of the clusters. The objective of this study was to evaluate the effect of the pre-harvest application of CaCl 2 and Citrus Biomass-based elicitor in 'Isabel' grapes, in the maintenance of quality during storage at room conditions under ambient and modified atmospheres. The experiment was conducted in a randomized block design with 8 replicates, in the field located at the municipality of São Vicente Férrer-PE, Brazil. 'Isabel' vines were treated 28 days before harvest with: Citrus Biomass-based elicitor (CB), Citrus Biomass-based elicitor + CaCl 2 (CB + C), CaCl 2 (C) and Control (T) -without application. Grapes harvested in the commercial maturity were stored in a 4 × 2 × 7 factorial arrangement, with 4 treatments (applied in the field), 2 storage conditions, ambient (AA) and modified (AM) atmospheres, under room conditions (25 ± 2 °C and 75 ± 2% RH) and 7 evaluation periods in four replicates. The application of CaCl 2 and CB-based elicitor reduced the berry drop index (55 and 75%, respectively), the decay and weight loss of 'Isabel' grape clusters. These treatments, associated or not, increased MA efficiency in maintaining cluster quality. The 'Isabel' grape berry drop index was directly influenced by the SS/TA ratio, pH and fruit decay index. Key words: Modified atmosphere. Berry drop. Resistance inducers. Decay. Vitis labrusca. ResumoO alto índice de degrana e podridão das bagas reduzem a qualidade e elevam as perdas pós-colheita em uvas 'Isabel', demandando técnicas de manejo na pré e pós-colheita acessíveis ao pequeno produtor, que mantenham a qualidade e ampliem a vida útil pós-colheita dos cachos. Assim, este trabalho teve por objetivo avaliar o efeito da aplicação na pré-colheita de CaCl 2 e elicitor à base de biomassa cítrica em uvas 'Isabel' na manutenção da qualidade durante o armazenamento na condição ambiente sob atmosferas ambiente e modificada. O experimento foi conduzido em blocos casualizados a campo, no município de São Vicente Férrer-PE com 8 repetições. Videiras 'Isabel' foram tratadas, 28 dias antes da
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