西北林学院学报2018，Vol.33Issue(2)：104-109,6.DOI:10.3969/j.issn.1001-7461.2018.02.17
文冠果种皮黑色素稳定性与抗氧化活性研究
Stability and Antioxidant Activities of Melanin from Testae of Xanthoceras sorbifolia
摘要
Abstract
Natural melanin plays dual roles as colorants and antioxidants.In this study,the colorant stability and antioxidant activities of the melanin from testae of Xanthoceras sorbifolia were evaluated.The melanin was partially precipitated below pH 4,and its solution color turned darker gradually with the increase of pH value.Heat and light caused hyperchromic effects,while oxidants demonstrated decoloration effects.The reductant and sucrose had no obvious effect on it.The pigment was stable to Na+ and Mg2+ while unstable to Al3+,Ca2+,Fe2+,Fe3+,Cu2+ and Zn2+.The melanin showed strong antioxidant capacity.Its · OH scavenging ability approximated to that of butylated hydroxytoluene (BHT).It showed a stronger free-radical scavenging ability towards 2,2-diphenyl-1-picrylhydrazyl than BHT did at a high concentration.Its reducing power was higher than that of BHT,while it was inferior to BHT in the total antioxidant capacity.The melanin is a colorant resource with antioxidant activities which can be further developed and utilized.关键词
文冠果/种皮/黑色素/稳定性/抗氧化Key words
Xanthoceras sorbifolia/testa/melanin/stability/antioxidant分类
农业科技引用本文复制引用
石长春,肖建明,戚建华,高荣,李剑..文冠果种皮黑色素稳定性与抗氧化活性研究[J].西北林学院学报,2018,33(2):104-109,6.基金项目
陕西省“13115”科技创新工程重大科技产业化项目(2008ZDYQ-13). （2008ZDYQ-13）
