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Optimization of fermentation conditions for carotenoid production in the radiation-resistant strain Deinococcus xibeiensis R13

文献类型： 外文期刊

作者： Tian, Liqing 1 ; Xu, Xian 2 ; Jiang, Ling 3 ; Zhang, Zhidong 4 ; Huang, He 2 ;

作者机构： 1.Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Coll Biotechnol & Pharmaceut Engn, Nanjing 211816, Jiangsu, Peoples R China

2.Nanjing Tech Univ, Coll Pharm, Nanjing 211816, Jiangsu, Peoples R China

3.Nanjing Tech Univ, Coll Food Sci & Light Ind, Nanjing 211816, Jiangsu, Peoples R China

4.Xinjiang Acad Agr Sci, Inst Microbiol, Urumqi 830091, Xinjiang Uyghur, Peoples R China

关键词： Deinococcus xibeiensis R13; Carotenoids; Growth media; Growth conditions; Optimization

期刊名称：BIOPROCESS AND BIOSYSTEMS ENGINEERING （ 影响因子：3.21； 五年影响因子：2.97 ）

ISSN： 1615-7591

年卷期： 2019 年 42 卷 4 期

页码：

收录情况： SCI

摘要： Deinococcus xibeiensis R13 was isolated from an extreme environment in Xinjiang, China, and can resist gamma-radiation and UV-irradiation. In this study, D. xibeiensis R13 was shown to be capable of efficiently producing carotenoids in culture, and factors influencing its productivity were identified. The maximum carotenoid yield was observed at an initial temperature of 30 degrees C and pH 7.0 in the presence of fructose, tryptone at a C/N ratio of 1:5, and 10 mu M Fe2+. The carotenoid yield under modified culture conditions was 6.64mg/L after fermentation for 48h, representing an increase of 84% compared to the original conditions. The biomass reached 7.22g/L, which was 2.19-fold higher than under non-optimized conditions. The produced carotenoids were extracted from R13 and analyzed by UPLC-MS. This is the first study of carotenoid production by the new strain D. xibeiensis R13, which provides a new source for the microbial fermentation of natural carotenoids, and also provides a good reference for industrial production of other carotenoids and other terpenoid products.

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