|
|
|
| Mutagenesis screening Vc two - step companion bacteria |
| Zhu Jianru1,3,4, Zhu Na2, Liu Lihua1,3,4, Wang Junfen1,3,4, Jiao Nuan1,3,4, Wang Yingying1,3,4 |
| 1. CSPC Weisheng Pharmaceutical (Shijiazhuang) Corporation Ltd, Shijiazhuang 050000, China; 2. Shijiazhuang Food and Drug Inspection Center, Shijiazhuang 050000, China; 3. Shijiazhuang Vitamin C Technology Innovation Center, Shijiazhuang 050000; 4. Hebei Province Nutrition Fortifier Technology Innovation Center, Shijiazhuang 050000, China |
|
|
|
|
Abstract In order to improve the conversion rate of sugar and acid in Vc two-step fermentation, bacillus giant WS-05 was used as the starting strain, and the combined mutagenesis method of microwave and lithium chloride was used for mutagenesis selection, and the associated bacteria that were more conducive to the growth and metabolism of acid-producing bacteria were screened. The effects of dose and time of microwave-lithium chloride mutagenesis on the survival rate of Vc two-step associated bacteria were studied. Three groups of mutagenesis doses with survival rate of 55%~70% were selected for mutagenesis. Screening the associated bacteria that can ferment small bacteria to produce 2-keto-L-gulonic acid with high yield, The high-yielding strain D06 was obtained by shaking flask fermentation and re-screening. The conversion rate of the strain was 2% higher than that of the original strain. The effect of fermentation conditions on the new strains was studied . The results showed that the oxygen requirement of the bacteria for acid production could be fully met by appropriately increasing the ventilation volume of the new strains (20~25 mL liquid in 250 mL fermentation shaker ), the optimal concentration of basal sugar was 7%, and the optimal growth temperature was 31℃. It was proved that the genetic character was stable, Its genetic character is stable, and the average conversion rate of 4 generations can reach 87.84%.
|
|
|
|
|
|
| [ 1 ] 韩晓东,张惟材,张 通. 维生素C发酵研究进展[ J ]. 生物技术通讯,2009( 3 ):433 - 435,454.
[ 2 ] 朱益波. 巨大芽孢杆菌与普通生酮基古龙酸菌互生作用研究[ D ]. 无锡:江南大学,2012.
[ 3 ] 郭礼强,郭立格,卢育新,等. VC二步发酵伴生菌苏云金芽孢杆菌的选育[ J ]. 生物化学,2006,26( 1 )108 - 111.
[ 4 ] 卢育新,刘春雷,张全刚,等. 微波-吖啶橙复合诱变选育VC发酵伴生菌[ J ]. 科技信息(学术研究),2007( 18 ):36 - 37.
[ 5 ] 康艳红,张海宏,赵 军,等. 一种VC二步发酵伴生菌的筛选方法[ J ]. 生物技术,2008. 18( 3 ):42 - 44.
[ 6 ] T. Roukas.Carob Pod:A New Substrate for Citric Acid Production by Aspergilus niger[ J ]. Applied Biochemistry and Biotechnology, 1998, 74( 5 ): 43 - 53.
[ 7 ] 焦迎晖,张惟材,谢 莉,等. 维生素c发酵中伴生菌对氧化葡糖杆菌的影响[ J ]. 微生物学通报,2002,29( 5 ):35 - 38.
[ 8 ] 程茉莉,严杏珍. 医药工业[ J ]. 1981( 6 ):15 - 18.
[ 9 ] 刘耀平. 维生素c二步发酵新菌系B529一V6的构建及其分子特性[ D ]. 沈阳:中国科学院沈阳应用生态研究所 ,2003.
[ 10 ] MacauleyS McNeilB. The genus Gluconobacter and its applicatio-
ns in bioteehnology[ J ]. Harvey LM Critical Reviews in Biotech-
nology,2001,1( 21 ): 311 - 315.
[ 11 ] 李冰锋,杨文华,林丽影. 探讨对精索静脉曲张(VC)患者实施高频彩色多普勒超声诊断的效果[ J ]. 影像研究与医学应用,2022( 4 ):20 - 28.
[ 12 ] 吴 弘,万 华,王治安,等. VC劣化电解液高电压性能的原因探索[ J ]. 电池,2022( 2 ):35 - 38.
[ 13 ] 王 晗,刘慧侠,董建卫. 文化视角下跨境VC对国有联合投资伙伴的选择研究[ J ]. 管理评论,2022( 7 ):42 - 43.
[ 14 ] 张 源,贾静娴,郑 贺,等. 绿茶提取液制备金纳米粒子及其在VC比色分析中的应用[ J ]. 食品科学 2021( 4 ):19 - 23.
[ 15 ] 曹逸荣,汤宏杰,姚惠君. VC定位在岸边集装箱起重机中的应用[ J ]. 起重运输机械,2021( 3 ):49 - 52.
[ 16 ] 苏康友. 基于VC的条形码产生与识别系统研究[ J ]. 信息与电脑(理论版),2021( 8 ):58 - 61.
[ 17 ] 苑 静,吴方丽,王绍云. 甜藤汁对饼干中VC含量的影响[ J ]. 山东化工,2021( 20 ):49 - 52.
[ 18 ] 张修珂,李梦瑶,李 聪 ,等. 基于微流控芯片对果蔬VC的快速检测[ J ]. 中国食品添加剂,2020( 2 ):48 - 52.
[ 19 ] 刘 鑫,王 伟,姜玉声,等. VC发酵废液投喂褶皱臂尾轮虫的可行性研究[ J ]. 大连海洋大学学报,2020( 3 ):36 - 39.
[ 20 ] 赵利军,毕冬梅,宫彦军. 基于VC++6.0的杨氏双缝干涉实验仿真[ J ]. 长春大学学报,2020( 6 ):18 - 22.
[ 21 ] 李 义,周 彬,刘耀平,等. 耿莉VC二步发酵新组合菌系的研究[ J ]. 微生物学杂志,2002( 2 ):49 - 53.
[ 22 ] 刘耀平,李 义,周 斌,等. 廖德明Vc二步发酵新菌系生长代谢的调节[ J ]. 应用与环境生物学报,2002[ 6 ]:47 - 48.
[ 23 ] 仲崇斌,于 海,吕主奎,等. 维生素C二步发酵的新组合菌系[ J ]. 生物技术,2001( 2 ):24 - 26.
[ 24 ] 刘建一,辛 刚. 秸秆发酵产氢菌系的筛选及菌系功能强化
研究[ J ]. 黑龙江八一农垦大学学报,2014( 1 ):25 - 28.
[ 25 ] 杜建玲,张金林. 利用弱毒菌系防治栗疫病的探讨[ J ]. 河北
农业大学学报,2000( 2 ):47 - 49.
[ 26 ] 郑文明,刘 峰,康振生,等. 中国小麦条锈菌主要流行菌系的AFLP指纹分析[ J ]. 自然科学进展,2000( 6 ):22 - 26. |
|
|
|