中国畜牧兽医

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种子液传代次数对益生菌FGM株发酵黄芪转化多糖的影响

尚利明,秦哲,张景艳,王旭荣,王磊,孔晓军,陈婕,杨志强,王学智,李建喜   

  1. (中国农业科学院兰州畜牧与兽药研究所,甘肃省中兽药工程技术研究中心,农业部兽用药物创制重点实验室,甘肃省新兽药工程重点实验室,甘肃兰州  730050

  • 修回日期:2014-03-13 出版日期:2014-06-20 发布日期:2014-07-24
  • 通讯作者: 李建喜(1971—),男,甘肃人,硕士生导师,研究员,研究方向:临床兽医学。E-mail:lzjianxili@163.com;Tel: 0931-2115256
  • 作者简介:尚利明(1987—),男,甘肃人,硕士生,研究方向:中药免疫药理。
  • 基金资助:

    公益性行业(农业)科研专项(201303040-15);中央级公益性科研院所基本科研业务费专项资金(1610322011007);中央级公益性科研院所基本科研业务费专项资金(1610322014019);国家自然科学基金(31072162)。

Effect of FGM Strain Passage Times on the Transformation of Astragalus Polysaccharide from Astragalus membranaceus by Fermentation

SHANG Li-ming, QIN Zhe, ZHANG Jing-yan, WANG Xu-rong, WANG Lei, KONG Xiao-jun, CHEN Jie, YANG Zhi-qiang, WANG Xue-zhi, LI Jian-xi   

  1. (Key Laboratory of New Animal Drug Project of Gansu Province, Key Laboratory of Veterinary Pharmaceutical Development of Ministry of Agriculture, Engineering & Technology Research Center of Traditional Chinese Veterinary Medicine, Lanzhou Institute of Husbandry and Pharmaceutical Science, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China)

  • Revised:2014-03-13 Online:2014-06-20 Published:2014-07-24

摘要: 益生菌FGM株发酵黄芪后,产物粗多糖得率显著提高。为进一步提高FGM株发酵黄芪转化多糖的稳定性,本试验将连续传代的FGM株种子液接种黄芪进行液体发酵,采用细菌平板计数法和苯酚—硫酸法分别测定发酵前、后的细菌总数和发酵后黄芪多糖的含量,并对结果进行了统计学分析。结果表明菌种在多次连续传代后会产生菌种退化现象,发酵产物中多糖含量与种子液细菌总数呈极显著相关(P=0.007),其中第4代种子液发酵黄芪转化多糖的性能最高。

关键词:

菌种FGM株; 传代次数; 发酵; 菌落数; 多糖含量

Abstract:   The assay was aimed to further improve the stability of fermentation of Astragalus membranaceus by Streptococcus alactolyticus FGM strain. First,Astragalus membranaceus-sulfuric acid method,respectively. Finally, we made a statistical analysis. The results showed that the multiple continuous passage of FGM strain had caused the serious degeneration phenomenon of FGM strain and extremely significantly affected the yield of APS (P=0.007), so the fermentation performance was the strongest after the 4th generation of subculture. was inoculated with the successively passaged FGM strain to fermentation, then we measured the viable counts of FGM strain and the yield of Astragalus polysaccharide (APS) by bacteria plate count method and phenol The assay was aimed to further improve the stability of fermentation of Astragalus membranaceus by Streptococcus alactolyticus FGM strain. First,Astragalus membranaceus was inoculated with the successively passaged FGM strain to fermentation, then we measured the viable counts of FGM strain and the yield of Astragalus polysaccharide (APS) by bacteria plate count method and phenol-sulfuric acid method,respectively. Finally, we made a statistical analysis. The results showed that the multiple continuous passage of FGM strain had caused the serious degeneration phenomenon of FGM strain and extremely significantly affected the yield of APS (P=0.007), so the fermentation performance was the strongest after the 4th generation of subculture.

Key words: FGM strain; passage times; fermentation; strain amount; APS content