食品科学

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基于响应曲面法的微囊化保加利亚乳杆菌高密度培养条件优化

闫颖娟,卢 俭,周剑忠,李 伟,董明盛   

  1. 1.忻州师范学院生物系,山西 忻州 034000;2.南京农业大学食品科技学院,江苏 南京 210095;
    3.南京卫岗乳业有限公司,江苏 南京 211100;4.江苏省农业科学院农产品加工研究所,江苏 南京 210014
  • 出版日期:2014-09-15 发布日期:2014-09-12

Optimization of High Cell Density Culture Conditions for Microencapsulated Lactobacillus bulgaricus by Response Surface Methodology

YAN Ying-juan, LU Jian, ZHOU Jian-zhong, LI Wei, DONG Ming-sheng   

  1. 1. Department of Biology, Xinzhou Teachers University, Xinzhou 034000, China; 2. College of Food Science and Technology,
    Nanjing Agricultural University, Nanjing 210095, China; 3. Nanjing Weigang Dairy Co. Ltd., Nanjing 211100, China;
    4. Institute Agro-product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
  • Online:2014-09-15 Published:2014-09-12

摘要:

采用响应曲面法对微囊化保加利亚乳杆菌FMG-4高密度培养的培养基组成和培养条件进行优化,结果表明:最佳培养基配方为:在MRS培养基中添加乳清粉97.15 g/L、大豆蛋白粉10.00 g/L、酵母粉7.55 g/L、碳酸钙8.03 g/L、硫酸镁0.30 g/L、硫酸锰0.02 g/L。最优培养条件为:培养温度41.7 ℃、初始pH 6.9。此时保加利亚乳杆菌FMG-4细胞菌密度可达到3.18×1011 CFU/g。

关键词: 液芯微囊, 响应曲面法, 保加利亚乳杆菌, 高密培养

Abstract:

In this study, the medium composition and culture conditions for microencapsulated Lactobacillus bulgaricus
FMG-4 were optimized using response surface methodology. The results showed that the optimal medium for high cell
density culture of microencapsulated Lactobacillus bulgaricus FMG-4 was an MRS medium supplemented with 97.15 g/L
whey powder, 10.00 g/L soy protein powder, 7.55 g/L yeast powder, 8.03 g/L calcium carbonate, 0.30 g/L magnesium sulfate
and 0.02 g/L manganese sulfate. The optimal culture conditions were 41.7 ℃ and an initial pH of 6.9. Under the optimized
culture conditions, the density of L. bulgaricus FMG-4 reached 3.18×1011 CFU/g.

Key words: liquid core microcapsule, response surface methodology, Lactobacillus bulgaricus, high cell density culture

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