单 位：
仲恺农业工程学院轻工食品学院;西北农林科技大学林学院
摘 要：
目的:揭示柿果醋生产过程中抗氧化性能变化规律及其物质基础。方法:以水柿为原料、采用一步发酵方法,对柿果醋生产过程中主要抗氧化物质含量和抗氧化性能的变化以及它们之间的相关性进行研究。结果:总酚、总黄酮和VC含量在发酵阶段都呈先升高后降低趋势,在陈酿过程中呈缓慢上升趋势,三者含量相互间存在极显著正相关关系(P<0.01);柿果醋的总抗氧化能力在发酵过程快速上升,在陈酿中呈缓慢上升趋势,与总酸含量呈极显著正相关关系(P<0.01);柿果醋对DPPH自由基的清除能力与总黄酮、总酸和VC含量呈显著正相关关系(P<0.05),对羟自由基的清除能力与总酚含量呈极显著正相关关系(P<0.01)。结论:柿果醋具有极强的抗氧化能力,其抗氧化作用是果醋中多种成分共同作用的结果。
译 名：
Change of Antioxidant Activity in Persimmon Vinegar during Brewing Process
作 者：
SUN Lu-hong1,LU Zhou-min1,,BAO Rong1,ZHAO Nan1,BAI Wei-dong2(1.College of Forestry,Northwest A&F University,Yangling 712100,China; 2.College of Light Industry and Food,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China)
关键词：
persimmon vinegar;one-step fermentation;antioxidant activity;correlation
摘 要：
Objective: To reveal the change regularity of antioxidant activity and material basis in persimmon vinegar during brewing process.Methods: One-step fermentation method was applied for brew vinegar from persimmon pulp.The major change in antioxidant contents and antioxidant activity as well as their correlation were explored.Results: The content change of total polyphenols,total flavonoids and vitamin C exhibited an initial increase and a final decrease during the fermentation process and a slow ascending trend during the aging stage.An obviously positive correlation among the three components was observed(P<0.01).The total antioxidant activity of persimmon vinegar revealed a rapid increase during fermentation process.Meanwhile,a significantly positive correlation between total antioxidant activity and total acid was also observed(P<0.01).Moreover,a remarkable positive correlation was also observed between the DPPH radical-scavenging capacity of persimmon vinegar and the contents of total flavonoids,total acid or vitamin C(P<0.05) and between the hydroxyl radical-scavenging capacity and the content of total polyphenols(P<0.01).Conclusion: Persimmon vinegar has significant antioxidant activity and its antioxidant activity is attributed to many kinds of components.
