Enhanced extraction of extracellular polymeric substances from biofilms by alternating current

被引：5
|
作者：
Li, XG [1 ]
Cao, HB [1 ]
Wu, JC [1 ]
Zhong, FL [1 ]
Yu, KT [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Chem Engn Res Ctr, Tianjin 300072, Peoples R China
来源：
BIOTECHNOLOGY LETTERS | 2002年 / 24卷 / 08期
基金：
中国国家自然科学基金;
关键词：
alternating current; biofilm; extracellular polymeric substance; extraction;
D O I：
10.1023/A:1015031021858
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The extraction of extracellular polymeric substances (EPS) including polysaccharides and proteins from aerobic biofilms using either EDTA or NaOH was enhanced by alternating current especially within the first 0.5 h of current application. At 60 mA and 50 Hz, the average extraction rate of polysaccharides within the first 0.5 h using EDTA was 8.3 mg h(-1) g TS-1 (TS: total solid, dry wt), 1.6 times of that without current, and that of proteins was 2.5 mg h(-)1 g TS-1, 1.2 times higher. The extraction of polysaccharides was maximal at around 500 Hz while that of proteins was less affected by increasing the current frequency.
引用
收藏
页码：619 / 621
页数：3
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