期刊
BIORESOURCE TECHNOLOGY
卷 190, 期 -, 页码 219-226出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.04.090
关键词
Cyanobacteria; Phycobiliproteins; Physico-chemical factors; Chromophores; Stability
资金
- University Grant Commission (UGC), New Delhi, India
- Department of Science and Technology (DST), New Delhi, India [IF120712]
The functionality and stability of phycobiliproteins (PBPs) phycoerythrin (PE), phycocyanin (PC) and allophycocyanin (APC) were investigated under various temperatures, pHs and oxidative stressors. All PBPs were thermostable up to 4-40 degrees C; however, their concentration decreased rapidly at 60-80 degrees C. The maximum stability of all PBPs was in the pH range 6.0-7.0. Decrease in PBPs content was found under high acidic (pH 2-4) and alkaline conditions (pH 8-12). The oxidizing agent (0.1-0.6%) showed the least effect on the stability of PBPs; however, 0.8-1.0% H2O2 caused significant loss of PBPs. Contrary to PE, PC and APC was more susceptible to an oxidizing agent. The chromophore associated with alpha- and beta-subunit of PBPs and thus, their functionality (fluorescence) was severely affected under high temperature (6080 degrees C), and oxidizing agent, as well as low (2-4) and high (8-12) pH. Contrary to PC and APC, functionality of PE was surprisingly maintained even at pHs 6-12 and under oxidative stress. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据