Antioxidant Activity of Pigment Extracted from Green-Wheat-Bran

• Published in: Agricultural sciences in China 2010-06, Vol.9 (6), p.825-832
• Main Authors: TANG, Xiao-zhen, DONG, Yu-xiu, WEI, Si-qing, ZHANG, Xian-sheng, YIN, Yan-ping
• Format: Article
• Language: English
• Subjects: 小麦麸皮; 总抗氧化活性; 抗脂质过氧化; 维生素C; 绿色小麦; 自由基清除活性; 色素提取; 超氧阴离子
• ISSN: 1671-2927
• DOI: 10.1016/S1671-2927(09)60160-7

The anthocyanin pigment extracted from green-wheat-bran was studied to identify its antioxidant activity.The antioxidant activities of the pigment were evaluated by anti-lipid peroxidation,total antioxidant activity （TAA）,superoxide anion radical scavenging activity （SARSA）,active oxygen scavenging activity （AOSA）,and DPPH （1,1-diphenyl-2 picrylhydrazyl free radical） radical scavenging activity.The results showed that the pigment had higher antioxidant activity and TAA,SARSA,AOSA and DPPH.scavenging activities at a certain concentration than Vc （antiscorbutic vitamin,vitamin C）,and the capacity increased with the increase of pigment concentration.Its TAA was 51.06 U mL-1,1.73 times of Vc,and SARSA 18 025.21 U mL-1,2.26% higher than Vc,and AOSA 3 776.31 U mL-1,1.24 times of Vc.As to the DPPH.scavenging activity of the pigment,there was a trend that higher concentration performed higher activity significantly improved with the company of Vc.The pigment showed significant antioxidant activities evaluated by different assays.Results will provide a better understanding on antioxidant activity of green wheat and allow the screening or breeding of green wheat varieties with higher antioxidant activity for food processing.