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中国精品科技期刊2020
李小艳, 刘书亮, 黄道梅, 蒲彪. 两株低温乳酸菌增殖培养基的优化[J]. 食品工业科技, 2014, (11): 247-251. DOI: 10.13386/j.issn1002-0306.2014.11.046
引用本文: 李小艳, 刘书亮, 黄道梅, 蒲彪. 两株低温乳酸菌增殖培养基的优化[J]. 食品工业科技, 2014, (11): 247-251. DOI: 10.13386/j.issn1002-0306.2014.11.046
LI Xiao-yan, LIU Shu-liang, HUANG Dao-mei, PU Biao. Optimization of enrichment medium for two low temperature lactic acid bacteria[J]. Science and Technology of Food Industry, 2014, (11): 247-251. DOI: 10.13386/j.issn1002-0306.2014.11.046
Citation: LI Xiao-yan, LIU Shu-liang, HUANG Dao-mei, PU Biao. Optimization of enrichment medium for two low temperature lactic acid bacteria[J]. Science and Technology of Food Industry, 2014, (11): 247-251. DOI: 10.13386/j.issn1002-0306.2014.11.046

两株低温乳酸菌增殖培养基的优化

Optimization of enrichment medium for two low temperature lactic acid bacteria

  • 摘要: 10℃条件下,以两株源于四川泡菜的耐低温乳酸菌3m-1(Lactobacillus plantarum)和8m-9(Leuconostoc mesenteroides)为研究对象,在白菜汁基础培养基中,研究添加不同氮源、碳源及缓冲剂对其生长的影响,并通过正交实验对增殖因子进行优化,确定了菌株3m-1和8m-9增殖的改良白菜汁培养基配方分别为:白菜汁基础培养基中添加蛋白胨1.0%、牛肉膏0.5%、乳糖1.0%、葡萄糖1.5%、磷酸氢二钾0.2%;白菜汁基础培养基中添加蛋白胨1.5%、牛肉膏1.0%、乳糖0.5%、葡萄糖1.5%、磷酸氢二钾0.2%。10℃条件下,菌株3m-1和8m-9在相应改良白菜汁培养基中培养72h,活菌数分别为6.05×109cfu/mL和7.35×109cfu/mL,较白菜汁基础培养基提高了6.1倍和10.4倍,而与MRS培养基培养相比,活菌数相近,研究结果为制备低温乳酸菌发酵剂具有指导意义,同时也为低温发酵泡菜的生产奠定了基础。 

     

    Abstract: Under 10℃ condition, the influence of different nitrogen source, carbon sources and buffer on the growth of two low temperature lactic acid bacteria 3m- 1 ( Lactobacillus plantarum) and 8m- 9 ( Leuconostoc mesenteroides) in cabbage basal medium were studied, and the orthogonal experiment was used to optimize the multiplication factor, the optimization cabbage medium of 3m-1 and 8m-9 were obtained as follows: peptone 1%, beef extract 0.5%, lactose 1.0%, glucose 1.5%, K2HPO40.2% were added into cabbage basal medium; peptone1.5%, beef extract 1.0%, lactose 0.5%, glucose 1.5%, K2HPO40.2% were added into cabbage basal medium.After cultivation in optimization cabbage medium for 72h at 10℃, the viable counts of 3m- 1 and 8m- 9 were 6.05 ×109cfu /mL and 7.35 × 109cfu /mL, respectively, which was about 6.1 times and 10.4 times higher than that in cabbage basal medium, but was similar to that in MRS medium.The research results had guiding siginifacance in preparation of low lactic acid bacteria starter, and also laid a foundation for producing pickles under low temperature.

     

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