Physicochemical characterization, phenolic composition and antioxidant activity of genotypes and commercial cultivars of blueberry fruits

ABSTRACT: The physicochemical characterization, antioxidant potential and phenolic composition of fruits of six genotypes (BB3, BB4, BB6, PW1, PW2 and PW5) and seven commercial cultivars (Bluebelle, Bluegem, Briteblue, Climax, Delite, Powderblue and Woodard) were carried out of blueberry, from the 2019/2020 production cycle. Color, soluble solids content, pH, titratable acidity, antioxidant activity (DPPH and ABTS), total phenolic compounds, total flavonoids, total anthocyanins and individual anthocyanins were analyzed. In general, all genotypes and cultivars are rich in phytochemicals. The genotypes PW1, PW2, PW5, BB3 and the cultivars Bluegem, Briteblue, Climax and Delite stand out. Thus, the blueberry genotypes in this study are considered as promising for the food industry and also for fresh consumption as commercial cultivars already consolidated in the fruit market, in view of the excellent phenolic composition present in these small fruits.摘要：本研究针对2019/2020生产季的蓝莓果实，对6个基因型（BB3、BB4、BB6、PW1、PW2及PW5）与7个商业栽培品种（Bluebelle、Bluegem、Briteblue、Climax、Delite、Powderblue及Woodard）开展理化特性表征、抗氧化潜力及酚类成分分析。测定指标涵盖色泽、可溶性固形物含量、pH值、可滴定酸度、抗氧化活性（DPPH与ABTS法）、总酚类化合物、总黄酮、总花青素及单体花青素。总体而言，所有供试基因型与栽培品种均富含植物化学物质；其中PW1、PW2、PW5、BB3基因型及Bluegem、Briteblue、Climax、Delite栽培品种表现尤为突出。鉴于此类小型浆果优异的酚类成分组成，本研究涉及的蓝莓基因型具备良好的食品工业应用前景，同时也可作为鲜果食用，媲美当前水果市场中已稳固推广的商业栽培品种。