天然产物研究与开发 ›› 2021, Vol. 33 ›› Issue (5): 810-818.doi: 10.16333/j.1001-6880.2021.5.013

• 开发研究 • 上一篇    下一篇

猴头菌菌丝富硒特性及富硒深层发酵的研究

姜宁1,2,朱淑彤1,苏浩雨1,黄洋1,王道才1,方庆1,陈莉莉1,刘晓鹏1,2*   

  1. 1湖北民族大学生物科学与技术学院;2生物资源保护与利用湖北省重点实验室,恩施 445000
  • 出版日期:2021-05-28 发布日期:2021-06-01
  • 基金资助:
    湖北省技术创新专项(2016AKB058,2017AKB077);国家自然科学基金(81460573);2019湖北产业教授人才项目(2019029)

Selenium enrichment characteristics and selenium-enriched submerged fermentation of Hericium erinaceus

JIANG Ning1,2,ZHU Shu-tong1,SU Hao-yu1,HUANG Yang1,WANG Dao-cai1,FANG Qing1,CHEN Li-li1,LIU Xiao-peng 1,2*   

  1. 1College of Biological Science and Technology,Hubei Minzu University;2 Hubei Key Laboratory of Biological Resources Protection and Utilization,Enshi 445000,China
  • Online:2021-05-28 Published:2021-06-01

摘要:

为获得高产的富硒猴头菌菌丝体,采用平板法,通过Na2SeO3浓度梯度实验,从H2、H99、NK 3种猴头菌中筛选出耐硒品种;以猴头菌菌丝干重为指标,采用单因素试验结合正交试验优化培养基的碳源、氮源、无机盐和维生素,并进一步通过均匀设计试验确定各营养元素的配比;以菌丝干重和有机硒含量为指标,确定深层发酵培养基中Na2SeO3的浓度。结果表明:3种猴头菌中H2最耐硒,在含6 μg/mL的Na2SeO3平板培养基中培养的菌丝适合作为后续研究的菌种;优化的液体培养基成分为5.8%可溶性淀粉、5.8%黄豆粉、0.04% CaCl2、0.024% VB1+VB2+VB6,此时菌丝干重理论值可达2.37 g/100 mL;当液体培养基含12 μg/mL 的Na2SeO3时,菌丝生长不受抑制,有机硒含量最高,达136.8 mg/kg菌丝。该研究为富硒猴头菌产品的开发和利用奠定了基础。

关键词: 猴头菌, 富硒, 深层发酵, 培养基, 优化

Abstract:

To obtain high yield of selenium enriched Hericium erinaceus mycelium,a selenium tolerant variety from H2,H99 and NK was selected by the plate method via the Na2SeO3 concentration gradient experiment.Then the medium components including carbon source,nitrogen source,inorganic salt and vitamin were optimized with orthogonal test based on single factor test,followed by the proportion of nutrient elements determined via uniform design.And the Na2SeO3 concentration in deep fermentation medium was determined based on dry weight of mycelium,content of total selenium and organic selenium.The results showed that:among the three H. erinaceus strains,H2 was the most selenium tolerant,and the mycelium cultured in plate medium containing Na2SeO3 6 μg/mL was suitable for the subsequent research.The optimized liquid medium composition was as follows:5.8% soluble starch,5.8% soybean powder,0.04% CaCl2,0.024%,VB1+VB2+VB6,and the theoretical value of mycelium dry weight could reach 2.37 g/100 mL.The mycelial growth in liquid medium containing 12 μg/mL Na2SeO3 was not inhibited and content of organic selenium was the highest of 136.8 mg/kg.This study laid a foundation for the development and utilization of selenium enriched H. erinaceus.

Key words: Hericium erinaceus, selenium-enriched, submerged fermentation, medium, optimization

中图分类号:  Q939.97