硒和铈对灵芝多糖和灵芝酸含量的影响

目的:考察在培养液中添加硒和铈对灵芝多糖和灵芝酸含量的影响。方法:向培养液中分别添加不同质量浓度的亚硒酸钠或硝酸铈铵,用液体浅层静置培养法培养灵芝菌丝体,用苯酚-硫酸法测定菌丝体和菌液中的多糖,用冰醋酸-香草醛法测定菌丝体中的灵芝酸。结果:添加40mg/L亚硒酸钠培养的灵芝菌丝体,多糖含量比对照提高42.3%,灵芝酸含量比对照提高10.6%;添加15mg/L硝酸铈铵培养的灵芝菌丝体,多糖含量比对照提高51.1%,灵芝酸含量则有所降低;两种元素还可明显提高菌液中灵芝多糖的含量。结论:向培养液中适量添加硒或铈,可显著提高灵芝菌丝体和菌液中的多糖含量,硒还可同时提高菌丝体的灵芝酸含量,铈则降低灵芝酸含量。生产中可根据实际需要添加硒或铈,以获得品质优良的灵芝菌丝体和菌液。

Effect of Respective Additions of Selenium and Cerium on Contents of Polysaccharide and Triterpene in Fermentation Supernatant and Mycelia of Ganoderma lucidum

Objective:To investigate the effect of respective additions of selenium and cerium at various concentration levels on contents of polysaccharides and triterpene in fermentation supernatant and mycelia of Ganoderma lucidum.Methods:Ganoderma lucidum was statically grown for 30 d in shallow liquid medium containing various concentrations of sodium selenite or ammonium ceric nitrate.At the end of fermentation,the fermentation broth was harvested and separated into supernatant and mycelia to measure polysacchari...