文献类型：会议论文

英文题名：Study on the Antioxidation of Lac Dye

作者：Zhang, Hong[1,2] Fang, Gui-gan[1] Zheng, Hua[2] Guo, Yuan-heng[2] Li, Kun[2]

通信作者：Zhang, H[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, Res Inst Resources Insects, Kunming 650224, Peoples R China

会议论文集：SREE Workshop on Medical Materials and Engineering (WMME 2011)

会议日期：OCT 29-30, 2011

会议地点：Macau, PEOPLES R CHINA

语种：英文

外文关键词：lac dye; antioxidant activity; free radical; scavenging activity

年份：2012

摘要：To investigate the in vitro antioxidation and antimicrobial activity of the lac dye, in this study, three free radicals DPPH., ABTS(+) and O-2(-). are used as the test objects to evaluate the free radial scavenging ability of the lac dye by comparing the absorbance change of free radical solution under specific wavelength. The results showed that, the lac dye has scavenging activity on DPPH. and ABTS(+), but has no scavenging activity on O-2(-).; when the lac dye reached a certain concentration, its scavenging rate on DPPH. and ABTS(+) can be as high as 68% and 87% respectively, with the antioxidant activity respectively 0.20 times and 3.42 times of that of the ascorbic acid, indicating that the lac dye is a kind of natural pigment of a certain scavenging activity on free radicals.