脱硫弧菌处理的硝化纤维素精细结构的傅里叶变换红外光谱研究

FTIR-spectroscopic studies of the fine structure of nitrocellulose treated by Desulfovibrio desulfuricans.

作者信息

Tarasova N B, Petrova O E, Faizullin D A, Davydova M N

机构信息

Kazan Institute of Biochemistry and Biophysics, Kazan Research Center, Russian Academy of Science, P.O. Box 30, 420111 Kazan, Russia.

出版信息

Anaerobe. 2005 Dec;11(6):312-4. doi: 10.1016/j.anaerobe.2005.03.002.

DOI:10.1016/j.anaerobe.2005.03.002

PMID:16701591

Abstract

Most studies have concluded that nitrocellulose (NC) with high degree of nitrogen content is resistant to biodegradation. Our results demonstrated that NC (>11%N) does undergo biotransformation in the presence of sulfate-reducing bacteria Desulfovibrio desulfuricans 1388. FTIR analyses indicated that the substitution of nitro groups for OH(-) groups took place. The spectrum of precipitate obtained after acetone extraction of NC resembled mainly the spectrum of native cellulose. Thus the synthetic unbiodegradable polymer was transformed to the natural compound accessible for microorganisms.

摘要

大多数研究得出结论，高含氮量的硝化纤维素（NC）具有抗生物降解性。我们的结果表明，在硫酸盐还原菌脱硫脱硫弧菌1388存在的情况下，NC（含氮量>11%）确实会发生生物转化。傅里叶变换红外光谱（FTIR）分析表明，硝基被OH(-)基团取代。用丙酮萃取NC后得到的沉淀物光谱主要类似于天然纤维素的光谱。因此，这种合成的不可生物降解聚合物被转化为微生物可利用的天然化合物。