摘要
Abstract
Four common and representative berries were selected to determine their bioactive compound contents and antioxidant activities.Total phenols,total flavonoids,anthocyanins,triterpenoids,and in vitro antioxidant activities were used as evaluation indicators to comparatively analyze the bioactive compounds and antioxidant capacities of the four berries.Principal component analysis(PCA)was performed to establish a comprehensive quality evaluation of the berries.Results showed that black chokeberry and red bean cranberry exhibited relatively higher contents of total phenols and flavonoid bioactives,while Chinese catalpa and mulberry contained higher levels of triterpenoids.Two principal components were extracted by PCA,accounting for a cumulative variance contribution of 92.637%.The comprehensive scores ranked the berries as follows:black chokeberry,mulberry,red bean cranberry,and sea buckthorn.Antioxidant activity assays demonstrated that chokeberry exhibited superior DPPH and ABTS+radical scavenging abilities compared to the other berries,whereas cranberry showed better hydroxyl and superoxide anion radical scavenging activities.black chokeberry demonstrated the highest contents of total phenols,flavonoids,anthocyanins,and triterpenoids,as well as the strongest in vitro antioxidant activity among the tested berries.This study provided a scientific basis for the development and utilization of berries,functional food research,and precise nutritional formulation.关键词
浆果/主成分分析/抗氧化活性/生物活性物质/总多酚Key words
berries/principal component analysis/antioxidant activity/bioactive compounds/total polyphenols分类
轻工纺织
