湖北农业科学 ›› 2022, Vol. 61 ›› Issue (3): 78-81.doi: 10.14088/j.cnki.issn0439-8114.2022.03.015

• 资源·环境 • 上一篇    下一篇

海岸水虱消化道的凝结芽孢杆菌分离鉴定及其产酶能力研究

朱新迎1, 苏宏2, 王卫兵3, 许永忠3, 王洪斌1   

  1. 1.江苏海洋大学海洋生命与水产学院,江苏 连云港 222005;
    2.徐州市水族展览馆,江苏 徐州 222005;
    3.江苏省宿迁市大江饲料有限公司,江苏 宿迁 223900
  • 收稿日期:2020-11-03 出版日期:2022-02-10 发布日期:2022-03-11
  • 通讯作者: 王洪斌(1966-),男,教授,主要从事海洋微生物研究,(电子信箱)lygwhbly@126.com。
  • 作者简介:朱新迎(1985-),女,江苏徐州人,硕士,主要从事食品加工与安全的研究,(电话)15365463636(电子信箱)847542162@qq.com
  • 基金资助:
    江苏省科技厅-苏北科技专项 (LYG-SZ201816)

Isolation and identification of Bacillus coagulans from the digestive tract of Ligia exotica and investigation of its enzyme production

ZHU Xin-ying1, SU Hong2, WANG Wei-bing3, XU Yong-zhong3, WANG Hong-bin1   

  1. 1. College of Marine Life and Fisheries Sciences, Jiangsu Ocean University, Lianyungang 222005, Jiangsu,China;
    2. Xuzhou Aquarium,Xuzhou 222005,Jiangsu,China;
    3. Suqian Dajiang Feed Co.,Ltd., Suqian 223900, Jiangsu, China
  • Received:2020-11-03 Online:2022-02-10 Published:2022-03-11

摘要: 采用传统的微生物富集、分离纯化方法,对海岸水虱(Ligia exotica)消化道微生物进行分离鉴定,得到1株产酶能力较强的菌株,命名为HZL-3。利用分子生物学方法,初步确定其为凝结芽孢杆菌(Bacillus coagulans)。采用ELISA法检测HZL-3产蛋白酶、淀粉酶含量,并研究温度、pH、培养时间、接种量等因素对其产酶量的影响。结果表明,HZL-3能够产生蛋白酶和淀粉酶;温度36 ℃,pH为7.5,培养16 h,接种量为6%,蛋白酶活性最高;温度36 ℃,pH为6.0,培养10 h,接种量为4%,淀粉酶活性最高,研究旨在揭示海岸水虱消化道微生物作为水产养殖益生菌的潜在应用。

关键词: 海岸水虱(Ligia exotica), 凝结芽孢杆菌(Bacillus coagulans), 分离鉴定, 蛋白酶, 淀粉酶

Abstract: In the experiment, a traditional method to enrich, separate and purify microorganisms was used in the digestive tract of Ligia exotica, and a strain with strong enzyme production ability was obtained and was named HZL-3 which was preliminarily determined as Bacillus coagulans by using molecular biological method. Contents of protease and amylase produced by HZL-3 was measured by ELISA and the effects of temperature, pH, culture time, inoculation amount and other factors on the amount of enzyme production were studied. The results showed that HZL-3 was able to produce protease and amylase; when cultured for 16 h at 36 ℃, pH 7.5, and 6% inoculation amount, protease activity was maximal; and amylase activity was the highest at 36 ℃, pH 6.0, when inoculation amount was 4%, and cultured for 10 h. This study aims to reveal the potential applications of microorganisms in the digestive tract of Ligia exotica as probiotics in aquaculture.

Key words: Ligia exotica, Bacillus coagulans, isolation and identification, protease, amylase

中图分类号: