文献类型：期刊文献

英文题名：Purification, identification and properties of a new blue pigment produced from Streptomyces sp. A1013Y

作者：Zhu, Yunping[1];Shang, Xiaoya[4];Yang, Li[1];Zheng, Shenglan[1,3];Liu, Kaifeng[1,3];Li, Xiuting[1,2]

第一作者：Zhu, Yunping

通讯作者：Li, XT[1]

机构：[1]Beijing Technol & Business Univ, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, Beijing 100048, Peoples R China;[2]Beijing Technol & Business Univ, Sch Food & Chem Engn, 33 Fucheng Rd, Beijing 100048, Peoples R China;[3]Beijing Technol & Business Univ, Beijing Engn & Technol Res Ctr Food Addit, Beijing 100048, Peoples R China;[4]Beijing Union Univ, Beijing Key Lab Bioact Subst & Funct Foods, Beijing 100191, Peoples R China

第一机构：Beijing Technol & Business Univ, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, Beijing 100048, Peoples R China

通讯机构：[1]corresponding author), Beijing Technol & Business Univ, Sch Food & Chem Engn, 33 Fucheng Rd, Beijing 100048, Peoples R China.

年份：2020

卷号：308

外文期刊名：FOOD CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000494644400021)】；

基金：We thank Dr. Sharon Shoemaker for insightful discussions, providing assistance with technical terminology and in written English. This research was financially supported by the Program for the National Natural Science Foundation of China (No. 31771960, No. 31571872) and Quality Construction of Talents Training - First-class Speciality Construction (Municipal Level) - Food Science and Engineering (PXM2019_014213_000010).

语种：英文

外文关键词：Streptomyces sp. A1013Y; Blue pigment; Stability; Radical scavenging activities; Antibacterial activity

摘要：A novel blue pigment was first isolated from Streptomyces sp. A1013Y. The purified component was identified as 4,8,13-trihydroxy-6,11-dione-trihydrogranaticins A (TDTA). Its physical properties were found to be: Molecular weight 462 Da; Color value, E(1cm)(0.1%)580 nm = 80; Solubility, it dissolved in organic solvents. In addition, the color of TDTA changed with pH but was found to be relatively stable between 20 and 100 degrees C, from pH 3 to pH 11, and under UV-light or darkness. TDTA's functional properties was as follows: TDTA showed excellent free radical scavenging properties, IC50 41.04 mu g/mL and 13.75 mu g/mL using 2, 20-diphenyl-1-picrylhydrazyl (DPPH) and 2,2-n-(3, 2-ethyl-benzothiazole-6-sulfonic acid) ammonium salt (ABTS) respectively. TDTA might be a promising source of natural pigment and bioactive compound used as additive in food industry.