| 米根霉发酵生产L-乳酸 |
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| 引用本文： | 虞东胜,周晓燕,王健,王勤,田文阳.米根霉发酵生产L-乳酸[J].工业微生物,2000,30(3):4-7. |
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| 作者姓名： | 虞东胜 周晓燕 王健 王勤 田文阳 |
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| 作者单位： | 上海市工业微生物研究所,上海,200233 |
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| 摘 要： | 报道了Ｌ－乳酸菌株的分离与筛选，探讨了不同碳源、氮源、通气量、温度等发酵条件对产Ｌ－乳酸的影响，从７８株米根霉中筛选出１３株产Ｌ－乳酸较高的菌株，其中米根霉（Ｒｈｉｚｏｐｕｓ ｏｒｙｚａｅ）Ｒｓ９２８产Ｌ－乳酸最高，产酸最稳定。试验结果表明，该菌株最适发酵培养组成（％）：淀粉水解糖１６，ＭｇＳＯ４ ０．０８，ＫＨ２ＰＯ４ ０．０５，ＺｎＳＯ４ ０．０１，ＣａＣＯ３ ７，ｐＨ自然。在６０ｔ发酵罐中，
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| 关 键 词： | 米根霉 乳酸 发酵 转化率 食用有机酸 |
L-lactic acid production by Rhizopus oryzae |
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| YU Dong-sheng,ZHOU Xiao-yan,WANG Jian,WANG Qin,TIAN Wen-yang.L-lactic acid production by Rhizopus oryzae[J].Industrial Microbiology,2000,30(3):4-7. |
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| Authors: | YU Dong-sheng ZHOU Xiao-yan WANG Jian WANG Qin TIAN Wen-yang |
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| Abstract: | The L?lactic acid production was carried out by the strain Rs928 of Rhizopus oryzae and its fermentation conditions in 60 m 3 fermentor were invesgated. The medium contained (%): glucose 16, MgSO 4 0.08, KH 2PO 4 0.05,ZnSO 4 0.01,CaCO 3 7, Urea 0.2. The results were as follows:the yield of L?lactic acid was 140 g/L;the fermentation period was 61 h;the conversion rate was 80.4% and the purity of L?lactic acid was 97.9%. |
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| Keywords: | Rhizopus oryzae L?lactic acid fermentation |
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