氮源对粪产碱杆菌 ATCC 31749 生产结冷胶的影响。

Effect of nitrogen source on curdlan production by Alcaligenes faecalis ATCC 31749.

机构信息

School of Marine Science and Technology, Huaihai Institute of Technology, 59 Cangwu Road, Xinpu 222005, China.

出版信息

Int J Biol Macromol. 2013 Jan;52:218-20. doi: 10.1016/j.ijbiomac.2012.10.010. Epub 2012 Oct 18.

DOI:10.1016/j.ijbiomac.2012.10.010

Abstract

This study aims to investigate the effect of nitrogen source on curdlan production by Alcaligenes faecalis ATCC 31749. Curdlan production fell when excess nitrogen source was present, while biomass accumulation increased as the level of nitrogen source raised. Curdlan production and biomass accumulation were greater with urea compared with those with other nitrogen sources. The highest production of curdlan and biomass accumulation by A. faecalis ATCC 31749 was 28.16 g L(-1) and 9.58 g L(-1), respectively, with urea, whereas those with NH(4)Cl were 15.17 g L(-1) and 6.25 g L(-1), respectively. The optimum fermentation time for curdlan production was also affected by the nitrogen source in the medium.

摘要

本研究旨在探讨氮源对粪产碱杆菌 ATCC 31749 生产岩藻聚糖的影响。当存在过量氮源时，岩藻聚糖的产量下降，而随着氮源水平的提高，生物量积累增加。与其他氮源相比，尿素的岩藻聚糖产量和生物量积累更高。粪产碱杆菌 ATCC 31749 用尿素生产的岩藻聚糖和生物量积累最高，分别为 28.16 g/L 和 9.58 g/L，而用氯化铵生产的分别为 15.17 g/L 和 6.25 g/L。岩藻聚糖生产的最佳发酵时间也受到培养基中氮源的影响。