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研究简报

王银善,庞学军,方慈祺,邓海凡,简浩然.共生细菌SB₁降解聚乙烯醇的研究--Ⅰ.共生细菌SB₁的分离及某些性质[J].环境科学学报,1991,11(2):236-241

DEGRADATION OF PVA BY SYMBIOTIC BACTERIA SB₁ Ⅰ. Isolation and Characterization of Symbiotic Bacteria SB₁

摘要：聚乙烯醇(PVA)是一种人工合成的水溶性大分子有机化合物。它广泛应用于纺织、化工和造纸等行业,随着化学合成技术的迅速发展,含这类物质的废水治理问题将日趋紧迫。七十年代以来国外已分离出降解PVA的菌株并用其净化环境。进入八十年代,国内在这方面也开始研究。本文报道的是共生细菌SB₁分离过程及其降解PVA的某些性质。

Abstract：Six mixed cultures utilizing polyvinyl alcohol (PVA) were obtained from various sources. It was shown that PVA was utilized symbiotically by two bacteria, SB1r (Pseudomonas sp) and SBls (Alcaligenes sp), which could not utilize PVA alone in respective axenic culture. Strain SB1S could produce PVA-degrading exoenzyme in the mixed culture fluid. The culture supernatant of strain SB1r enabled strain SB1S to grow on PVA. Growth of the symbiotic mixed culture SB1 were accompanied by decreases in PVA concentration, the relative viscosity of the medium and pH value.