培养条件对红曲霉产红曲红色素及桔霉素影响的研究

Influence of culture conditions on the production of red pigments and citrinin by monascus

通过改变红曲霉液态发酵条件,分析发酵过程中培养基、发酵时间以及装液量对色素及桔霉素产量的影响。结果显示,含氮量高的培养基会强化桔霉素的生成;桔霉素的生成量随发酵时间的延长而上升,到120h时达到最高,然后开始下降,而色素从120h后保持恒定;随着装液量的增加,桔霉素和色素的产量呈现出逐渐下降的趋势。

Through changing the conditions of Monascus liquid-state fermentation,the effects of medium,fermentation time and fermentation liquid volume in flask on pigment and citrinin during fermentation were studied.The results showed that the medium containing higher nitrogen sources resulting in the highest citrinin production;The mount of citrinin was increased with the delay of liquid fermentation time,and it reached maximum when fermentation time was 120h,then began declining,the mount of pigment was kept same level after 120h;With the increasing of fermentation liquid volume in flask,the output of citrinin and pigment showed decreasing gradually.