于 静1,毛亚玲1,李俊娥1,杨 柳1,祝 霞1,2,杨学山1,2*
(1.甘肃农业大学食品科学与工程学院,甘肃兰州 730000;
2.甘肃省葡萄与葡萄酒工程学重点实验室,甘肃兰州 730070)
摘要:为优化本土酒酒球菌(Oenococcus oeni,O. oeni)高密度培养工艺条件,以分离自甘肃河西走廊产区的本土 O.oeni ZX-1和WW-1为试验菌株,利用单因素试验结合Box-Behnken设计对菌株的培养条件进行优化。结果表明,酒酒球菌ZX-1的最佳培养条件:培养温度28 ℃,初始pH 5.06,碳源含量15.1 g/L;酒酒球菌WW-1的最佳培养条件:培养温度28 ℃,初始pH 5.08,碳源含量15.3 g/L。在最佳培养条件下,2株本土菌株发酵液活菌数均达到1.0×109 CFU/mL,与模型预测值无显著差异(P>0.05)。综上,优化后的高密度培养工艺可有效提高本土O. oeni菌株ZX-1和WW-1的活菌数,对于制备高质量本土O. oeni直投式发酵剂具有重要意义。
关键词:高密度培养;活菌数;本土酒酒球菌;Box-Behnken设计
中图分类号:TS261.13 文献标识码:A 文章编号:1674-506X(2022)06-0023-0009
Optimization of High Density Culture Conditions of Native Oenococcus oeni in Hexi Corridor
YU Jing1, MAO Yaling1, LI June1, YANG Liu1, ZHU Xia1,2, YANG Xueshan1,2*
(1.College of Food Science and Engineering, Gansu Agricultural University, Lanzhou Gansu 730000, China;
2. Gansu Key Laboratory of Viticulture and Enology, Lanzhou Gansu 730000, China)
Abstract:In order to optimize the high density culture conditions of native Oenococcus oeni. ZX-1 and WW-1 isolated from Hexi corridor of Gansu province were used as test strains. And the culture conditions of the strain were optimized by single factor test combined with Box-Behnken design. The results showed that the optimal culture conditions of ZX-1 were: culture temperature 28 ℃, initial pH 5.06, carbon source content 15.1 g/L; the optimal culture conditions of WW-1 were: culture temperature 28 ℃, initial pH 5.08, carbon source content 15.3 g/L. Under the optimal culture conditions, the viable count in the fermentation liquid of the two native strains reached 1.0 × 109 CFU/mL, which was not significantly different from the predicted value of the model (P>0.05). In conclusion, the optimized high density culture process can effectively increase the number of viable counts of native O. oeni strains ZX-1and WW-1, which is of great significance for the preparation of high-quality native O. oeni direct vat set(DVS).
Keywords:high density culture; viable count; native Oenococcus oeni; Box-Behnken design
doi:10.3969/j.issn.1674-506X.2022.06-004
收稿日期:2022-02-10
基金项目:国家自然科学基金项目(32060581);甘肃省自然科学基金项目(20JR10RA527);甘肃省葡萄酒产业发展基金项目(20180820-07,20180820-08);甘肃农业大学校列项目(GSAU-ZL-2018-8)
作者简介:于静(1997-),女,硕士研究生。研究方向:酿酒微生物 。
*通信作者:杨学山(1977-),男,教授。研究方向:葡萄酒/果酒酿造微生物研究。
引用格式:于静,毛亚玲,李俊娥,等.河西走廊产区本土酒酒球菌高密度培养工艺条件优化[J].食品与发酵科技,2022,58(6):23-31.
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