Cellulose synthesized by Enterobacter sp FY-07 under aerobic and anaerobic conditions
Cellulose synthesized by Enterobacter sp FY-07 under aerobic and anaerobic conditions
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肠杆菌FY-07在需氧和厌氧条件下合成的纤维素
DOI：
10.1016/j.biortech.2012.09.040
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发表时间：
2012-12-01
影响因子：
11.4
通讯作者：
Li, Guoqiang
中科院分区：
文献类型：
--
作者：
Ma, Ting;Ji, Kaihua;Li, Guoqiang
肠杆菌属。FY-07能在好氧和厌氧条件下产生细菌纤维素(BC)。在30℃、缺氧、充氧条件下静态培养72h，纤维素产量超过5g/L，表明氧气不是肠杆菌产生BC的必要条件。FY-07。X射线衍射、傅里叶变换红外光谱和扫描电子显微镜分析表明，该菌株的微结构与木质葡萄糖酸杆菌BCRC12335和醋酸杆菌BCRC12335等好氧细菌相似。V6。结晶度指数为63.3%。保水性(约11000%)和复水率(24.4%)优于报道的好氧细菌G.xylinum BCRC12335和乙酸杆菌产生的BC。V6。这些结果为静态深层发酵生产BC奠定了基础。(C)2012爱思唯尔有限公司。保留所有权利。
Enterobacter sp. FY-07 can produce bacterial cellulose (BC) under aerobic and anaerobic conditions. In static cultivation at 30 degrees C for 72 h under anoxic, oxygen-limited and aerated conditions, cellulose production exceeded 5 g/l, which indicated that oxygen was not essential for production of BC by Enterobacter sp. FY-07. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) analysis showed that the microstructure of the BC was similar to that produced by aerobic bacteria such as Gluconacetobacter xylinum BCRC12335 and Acetobacter sp. V6. The crystallinity index of the BC was 63.3%. Water-holding capacity (approximately 11000%) and rehydration ratio (24.4%) were superior to those reported for BC produced by the aerobic bacteria G. xylinum BCRC12335 and Acetobacter sp. V6. These results will facilitate static submerged fermentation for the production of BC. (C) 2012 Elsevier Ltd. All rights reserved.