食品科学2017，Vol.38Issue(10)：37-41,5.DOI:10.7506/spkx1002-6630-201710007
低频磁场对紫色红曲菌液态发酵产麦角固醇的影响
Effect of Low-Frequency Magnetic Field on Ergosterol Production by Monascus purpureus in Liquid-State Fermentation
摘要
Abstract
We explored the effects of low-frequency magnetic field (LF-MF) on the production of ergosterol by fermentation with Monascus purpurcus and further determined the optimal LF-MF treatment conditions such as LF-MF intensity,time treatment time and the fermentation stage when M.purpurcus was treated with LF-MF on ergosterol production by liquid-state fermentation of M.purpurcus.We also investigated the effects of LF-MF on the metabolism of ergosterol by M.purpurcus,and examined the change in M.purpurcus biomass throughout the fermentation period and the effects on other main metabolites of M.purpurcus under optimal treatment conditions.Results showed that ergosterol yield was 7.08 mg/g and the biomass of M.purpurcus was 3.2 g/L on the 12th day of fermentation,which were respectively increased by 62.5％ and 31.68％ as compared to that of the control when M.purpurcus was treated by LF-MF at an intensity of 1.2 mT during the first two days of fermentation.Consequently,LF-MF was an effective method to enhance ergosterol yield.This result may provide evidence supporting the use of LF-MF to improve the production of beneficial microbial metabolites by fermentation.关键词
低频磁场/紫色红曲菌/生物量/麦角固醇/液态发酵Key words
low-frequency magnetic field (LF-MF)/Monascus purpurcus/biomass/ergosterol/liquid-state fermentation分类
生物科学引用本文复制引用
万云雷,韩红霞,李利,伍潇洁,高梦祥..低频磁场对紫色红曲菌液态发酵产麦角固醇的影响[J].食品科学,2017,38(10):37-41,5.基金项目
国家自然科学基金面上项目(31371829) （31371829）
