期刊论文

中文

现代生物医学进展

1673-6273

2009

9

7

1268-1271

湖南省教育厅青年基金（07B035）资助课题；

本校为第一机构

目的：比较不同因素对花青素总抗氧化能力的影响。方法：本文采用铁离子还原法测定了两种紫红薯花青素经光照、温度、防腐剂、金属离子和杀菌工艺处理后的总抗氧化能力的变化。结果：两个品种（紫A4和京薯6）花青素提取物的总抗氧化能力随光照和加热时间延长而下降，温度越高，下降速度越快：防腐剂苯甲酸钠对两种花青素提取物总抗氧化能力的影响不明显。四种金属离子（K^＋、Mg^2＋．Ca^2＋、Zn^2＋）和四种杀菌工艺（巴氏灭菌、煮沸灭菌、高温短时灭菌、高压蒸汽灭菌）对其总抗氧化能力有不同程度的影响。其中Zn^2＋显著降低其总抗氧化能力，其它金属离子使其总抗氧化能力稍有增加。高温短时灭...

Objective：To study the effects of different factors on the stability of total antioxidant capacities （TAC） of anthocyanin from sweet potatoes. Method：The TACs of anthocyanin from two sweet potatoes （ZiA4 and Jinshu6） were analyzed by ferric reducing method before and after treatments of light, temperature, antiseptic, metal ions and sterilizing process. Results：The TACs of anthocyanin extracts from the two potatoes had the photosensitive and thermo-sensitive characteristics and decreased with the extension of illuminating and heating tim...