摘要
通过香椿多酚在贮藏过程中抗氧化性的变化,探究贮藏条件对香椿中功能性质的影响。将香椿在0、5、10℃的温度下分别贮藏一定时间后,采用DPPH自由基清除法(DPPH法)和铁离子还原比色法(FRAP法)来评价其多酚抗氧化性的变化,同时用高效液相色谱法(HPLC法)测定样品中多酚的变化。贮藏后的香椿,其多酚的抗氧化性均在第4天时达到最高,且该变化与香椿中主要的3种多酚化合物的含量变化有关。贮藏温度、时间对于香椿多酚抗氧化活性的变化有着一定的影响,香椿的抗氧化性主要取决于酚酸类物质的变化。
The purpose of this study is to investigate the effect of storage conditions on the function of Toona sinensis by studying the changes of antioxidant activity of phenolics.DPPH assay and ferric reducing antioxidant power（FRAP） were used to evaluate the changes of antioxidant activity during the storage at 0,5 and 10℃.The content of various phenolic compounds was detected by HPLC.The antioxidant activity of phenolics in T.sinensis stored at 0,5 and 10℃ reached the highest value at the 4th day and the change could be connected with the changes of three kinds of phenolics in it.So the antioxidant activity of phenolics is affected by both storage temperature and time,and mainly decided by the changes of phenolics in T.sinensis.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2011年第2期120-125,共6页
Journal of Beijing Forestry University
基金
国家自然科学基金项目(30771510)
中央高校基本科研业务费专项资金项目(2009211)
关键词
香椿
多酚
抗氧化性
贮藏
Toona sinensis
phenolics
antioxidant activity
storage
