Abstract:This paper studied on the influence of microelements Zn2+ and Fe3+ in the microbial growth metabolism, and confirmed the feasibility of open fermentation in kitchen waste using Lactobacillus amylophilus GV6. In the open fermentation, the added of Fe3+ improved the LDH activity and the lactic acid production arrived to 29.5g/L, this in effect raised 24.2% compared with the condition of without adding any microelements.On the contrary, the added of Zn2+ reduced the activity of ADH, making the the ethanol production accumulated to 6.0g/L, meanwhile,the lactic acid only reached to 17.8g/L. Appropriate amount of Fe3+ could optimize the utilization of starch in the medium, arrive to about 65.7%, which improved 38.5% and 28.1% respectively compared with the conditions of adding Zn2+ and without adding any microelements. Sucrose, maltose, lactose first transformed to glucose and fructose, finally used by Lactobacillus amylophilus GV6.
邹惠, 汪群慧, 刘建国, 王爽. Zn2+及Fe3+对嗜淀粉乳杆菌开放式发酵产乳酸的影响[J]. 中国环境科学, 2012, 32(3): 499-503.
ZOU Hui, WANG Qun-Hui, LIU Jian-Guo, WANG Shuang. The influence of Zn2+ and Fe3+ on lactic acid production by Lactobacillus amylophilus GV6 under open fermentation. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(3): 499-503.