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요약정보
微生物絮凝剂的絮凝性及抗氧化性研究 / Flocculating Activity and Antioxidation of Microbial Flocculants
Resource Type
Academic Journal
Authors
焦扬
;
高海宁
;
郑秀芳
;
梁倩倩
;
李彩霞
;
JIAO Yang
;
GAO Hai-ning
;
ZHENG Xiu-fang
;
LIANG Qian-qian
;
LI Cai-xia
Source
环境科学与技术 / Environmental Science & Technology
. 34(10):130-133
Subject
微生物絮凝剂
絮凝率
多糖
抗氧化性
Language
Chinese
ISSN
1003-6504
Online Access
Find it @ DONGA
초록
考察了一株产絮凝剂细菌BK-4所产絮凝剂的絮凝能力、组成及抗氧化性.结果表明,接种量2%、培养24 h后BK-4菌发酵液的最大絮凝率可达96.9%.发酵液的主要组成为多糖,提取方法对粗提物的絮凝率有明显影响,水溶醇沉法粗提物的最大絮凝率可达95.6%,粗提物多糖含量为1.65g/L时对DPPH自由基的捕获率可达最大值39.6%;粗提物多糖含量为2.2 g/L时,对羟基自由基的清除率为20.7%.BK-4菌多糖具有抗氧化与促氧化的双重作用,由此,当发酵所产絮凝剂浓度达到一定值时应该分离产物,以便较好保持絮凝剂产生菌的活性.
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