| .海洋维生素B_(12)产生菌培养条件研究[J].中国海洋药物,2000,19(6):. |
| 海洋维生素B_(12)产生菌培养条件研究 |
| STUDY ON CULTURE CONDITION OF MARINE VITAMIN B_(12)-PRODUCING BACTERIA |
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| DOI： |
| 中文关键词: 海洋细菌,维生素B_(12)生产,B_(12)菌培养条件 |
| English Keywords:Marine bacteria, Vitamin B 12 Production, Culturing conditions of Vitamin B 12 producing bacteria. |
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| 中文摘要: |
| 用大肠埃希氏菌 ( Escherichia coli) 113- 3测定 14株分离自我国海域的海洋细菌维生素 B12 ( VitB12 )产力。试验了它们产生 B12 的培养基及培养条件。结果表明 ,以海水浸提豆饼并添加一些营养组成的培养基适于进一步确定产 B12 的菌种。培养基中适当添加二氯化钴等盐类有利于 B12 合成。培养基酸碱度在所试菌种发酵过程中随时间延长而提高。保持偏碱性约 96h,可获得较好的 B12 生产效益。所测菌株中 ,No.2 62 7菌株表现良好。有 No.2 62 7菌株的混合培养 ,B12 产力常常有潜力和优势可取。 |
| English Summary: |
| The vitamin B 12 Productivity of 14 marine bacterial strains isolated from the China Sea was determined microbiologically using Escherichia coli 113 3. Tests were made on the culturing media and culture conditions for Vitamin B 12 production. The results showed that the culturing medium in which the extract from soybean cake with seawater and some nutriments were added was suitable to recognize further some marine Vitamin B 12 producing bacterial strains. The medium with appropriate cobalt chloride and some salts added may be useful for Vitamin B 12 biosynthesis. The PH value of the fermentation for the testing strains was raised with the lapse of time for fermentation. A better Vitamin B 12 production may be obtained by keeping the fermentation liquid slightly basic till about 96h. No.2627 strain in all the strains tested showed well in the productivity. The mixed cultivation of some strains (including No.2627 strain) tested often has potentiality and superiority for Vitamin B 12 production. |
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