Bioactive compounds and antioxidant activity of jabuticaba var. Pingo de mel during its physiological development

ABSTRACT The bioactive compounds and in vitro antioxidant activity of jabuticaba fruits var. Pingo de mel were evaluated during their physiological development. The fruits were harvested ten days after anthesis until maturity, at intervals of four days between collections. The period between anthesis and maturity was 34 days. Higher phenolics levels, hydrolysed tannins, and antioxidant activity were observed in 10 days after anthesis, while vitamin C contents were higher throughout the ripening process. At the end of development (34 days), higher levels of vitamin C and lower hydrolysed tannin were observed. It is known that the lower the hydrolysed tannins, the better the sensory characteristics of the fruit, and considering the benefits of vitamin C, it is necessary to harvest the jabuticaba fruits var. Pingo de mel in 34 days after anthesis for better use of these compounds.

【摘要】本研究针对蜜滴（Pingo de mel）品种嘉宝果（Jabuticaba），对其生理发育过程中的生物活性成分与体外抗氧化活性展开评估。试验自开花后10天起开始采收果实，直至果实成熟，每次采收间隔4天，开花至成熟的总时长为34天。结果表明，开花后10天的果实中酚类物质、水解单宁含量及抗氧化活性均处于较高水平，而维生素C含量则在整个成熟过程中逐步提升；至发育末期（开花后34天），果实维生素C含量达到最高，水解单宁含量最低。已知水解单宁含量越低，果实感官品质越好；结合维生素C的健康益处，建议于开花后34天采收该品种嘉宝果，以最大化利用此类活性成分。