| 利用溶氧控制策略进行高密度和高强度乙醇发酵的初步研究 |
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| 引用本文： | 何向飞,张梁,石贵阳. 利用溶氧控制策略进行高密度和高强度乙醇发酵的初步研究[J]. 食品与发酵工业, 2008, 34(1): 20-23 |
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| 作者姓名： | 何向飞 张梁 石贵阳 |
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| 作者单位： | 1. 江南大学生物工程学院生物资源研究室,江苏无锡,214122
2. 江南大学生物工程学院生物资源研究室,江苏无锡,214122;江南大学工业生物技术教育部重点实验室,江苏无锡,214122 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 在搅拌罐式生物反应器中,考察了乙醇发酵过程中不同溶氧控制条件对菌体量和其它发酵参数的影响。结果表明,溶氧浓度和通气时间是影响菌体生长和乙醇发酵强度的重要因素。通过将溶氧控制在较为合适的水平,发酵48h,菌体密度达到5.5～6亿个/mL,发酵强度为2.7lg/(L·h),比传统发酵分别提高了200%和48.9%。为进一步深入研究溶氧控制策略,实现高密度和高强度乙醇发酵提供了依据。
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| 关 键 词： | 溶氧浓度 高密度 乙醇发酵 发酵强度 |
| 修稿时间： | 2007-09-11 |
The Preliminary Study of High Cell-density and Intensity Ethanol Fermentation Employing the Dissolved Oxygen Control Strategy |
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| He Xiangfei,Zhang Liang,Shi Guiyang. The Preliminary Study of High Cell-density and Intensity Ethanol Fermentation Employing the Dissolved Oxygen Control Strategy[J]. Food and Fermentation Industries, 2008, 34(1): 20-23 |
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| Authors: | He Xiangfei Zhang Liang Shi Guiyang |
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| Abstract: | The effect of different dissolved oxygen concentration on the biomass and other fermentation parameters was investigated in the process of ethanol fermentation using stirred tank fermentor.It showed that dissolved oxygen concentration and aeration time were important factors which influenced the growth of ceils and the ethanol fermentation intensity.At preferred dissolved oxygen level,the biomass amounted to 5.5～6 hundred million/mL and the fermentation intensity reached 2.71g/(L·h) after 48h fermentation, which increased 200% and 48.9% than traditional fermentation.This study might provide foundation for further investigation of optimum dissolved oxygen control strategy in order to achieve the goal of high density and high intensity ethanol fermentation. |
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| Keywords: | dissolved oxygen high cell-density ethanol fermentation ethanol intensity |
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