食品科学 ›› 2007, Vol. 28 ›› Issue (9): 409-414.

• 生物工程 • 上一篇    下一篇

红酵母超高压诱变及其β-胡萝卜素发酵条件的初步研究

 王岁楼, 陈德经, 邓百万   

  1. 陕西省资源生物重点实验室; 陕西省资源生物重点实验室 陕西汉中723001中国药科大学食品科学与安全系; 江苏南京210009; 陕西汉中723001;
  • 出版日期:2007-09-15 发布日期:2011-11-22

Mutation of Rhodotorula Induced by Ultra High-pressure and Its Fermentation Conditions for Carotene Production

 WANG  Sui-Lou, CHEN  De-Jing, DENG  Bai-Wan   

  1. 1.Key Laboratory of Shaanxi Province for Resource Biology,Hanzhong 723001,China;2.Department of Food Science and Safety,China Pharmaceutical University,Nanjing 210009,China
  • Online:2007-09-15 Published:2011-11-22

摘要: 为了提高红酵母Rhodotorula glutinis NR06的β-胡萝卜素生产能力,利用超高压技术对其进行诱变处理,在300MPa处理10min时获得一突变株NR06-H39,其β-胡萝卜素产量达到9.64mg/L,比出发菌株NR06的6.30mg/L提高了53.02%,且遗传稳定性良好。分别研究了培养基碳、氮源等因素对该突变株胡萝卜素发酵的影响,获得了适宜的培养条件组合为培养基装量40ml/250ml、发酵液初始pH6.5、葡萄糖40g/L、(NH4)2SO45g/L、酵母膏5g/L、花生油0.4ml/L、番茄汁3ml/L和接种量8%,此时该突变株的胡萝卜素发酵产量可达12.42mg/L,比对照提高了28.84%。

关键词: 胡萝卜素, 红酵母, 超高压, 诱变, 发酵条件

Abstract: In order to improve the ability of carotene biosynthesis,this study utilized ultra high-pressure(UHP)technology to treat Rhodotorula glutinis NR06 strain.A mutant NR06-H39 was obtained by treatment at 300 MPa for 10 min.The carotene production of this mutant reached 9.64 mg/L,an increase of 53.02% compared with 6.30 mg/L of parent strain,and its quality of genetics was proved stabile by experiments.Under the optimized fermentation conditions(glucose of 40 g/L,(NH4)2SO4 of 5 g/L,yeast extract of 5 g/L,media volume of 40 ml/250 ml shake flask,inoculation size of 8%,original pH of 6.5,peanut oil of 0.4 ml/L,and tomato extract of 3 ml/L),the β-carotene production could reach 12.42 mg/L,increasing by 22.84% compared with 9.64 mg/L of the control.

Key words: carotene, Rhodotorula glutinis, ultra high-pressure, mutagenesis, fermentation conditions