食品科学 ›› 2008, Vol. 29 ›› Issue (9): 384-387.

• 生物工程 • 上一篇    下一篇

泰山虫草菌丝体液体发酵培养基的优化及其有效成分含量测定

 赵雪梅, 苏延友, 王桂玲, 马腾, 毕研平   

  1. 泰山医学院药学院;
  • 出版日期:2008-09-15 发布日期:2011-12-08

Optimization of Liquid Fermentation Medium of Cordyceps taishanensis Mycelia and Determination of Contents of Their Effective Components

 ZHAO  Xue-Mei, SU  Yan-You, WANG  Gui-Ling, MA  Teng, BI  Yan-Ping   

  1. College of Pharmacy,Taishan Medical University,Taian 271016,China
  • Online:2008-09-15 Published:2011-12-08

摘要: 以(NH4)2SO4作为氮源进行单因素试验,通过改变(NH4)2SO4的含量以构成不同的碳氮比,以菌丝干重为指标,确定最佳碳氮比,得出其最佳碳氮比在3.0到4.0之间。以玉米粉、葡萄糖、黄豆粉、酵母膏添加剂为考察因素进行L9(34)正交试验,确定最佳培养基配方,得到其最佳培养基配比为:玉米粉3.0%,葡萄糖1.5%,黄豆粉1.0%,酵母膏0.8%,菌丝体的最大生长量平均在1.29g/100ml。以薄层色谱扫描法(TLCS)测定泰山虫草菌丝体与天然冬虫夏草中腺苷、尿苷、次黄嘌呤核苷、次黄嘌呤成分的含量,结果表明:泰山虫草菌丝体核苷类有效成分及次黄嘌呤含量明显高于冬虫夏草。其腺苷、尿苷、次黄嘌呤核苷、次黄嘌呤的含量分别是冬虫夏草的8.25、3.76、11.8和1.55倍。两种虫草中核苷类成分的含量均表现为尿苷>次黄嘌呤核苷>腺苷>次黄嘌呤。

关键词: 泰山虫草菌丝体, 液体发酵, 尿苷, 腺苷, 次黄嘌呤核苷, 次黄嘌呤

Abstract: Taking mycelial dry weight as the index for investigation, the optimum carbon-nitrogen ratio (C/N ratio) in liquid fermentation medium of Cordyceps taishanensis is determined as 3.0 to 4.0 by single factor test. ThroughL9(34) orthogonal test, the best formula of the medium is determined as maize meal 3.0%, glucose 1.5%, soybean flour 1.0% and yeast paste 0.8%. The average maximum growth quantity of mycelium is 1.29 g/100 ml. Furthermore, the contents of adenosine, uridine, inosine and hypoxanthine from natural Cordyceps sinensis (Berk.) Sacc. mycelia and cultured Cordyceps taishanensis mycelia were determined by thin-layer chromatographic scanning repectively. The contents of these four components in Cordyceps taishanensis mycelia are as 8.25 times, 3.76 times, 11.8 times and 1.55 times as those of Cordyceps sinensis (Berk.) Sacc.respectively, much higher. The contents of these four components in the two samples are uridine > inosine > adenosine > hypoxanthine.

Key words: Cordyceps taishanensis mycelia, liquid fermentation, uridine, adenosine, inosine, hypoxanthine