摘要
通过对红曲霉固态培养形态的观察,提出了水分子跨膜透过模型:水分子通过简单扩散和主动运输同时进行跨膜流通,两者的效率影响到红曲霉的形态和发酵性能。通过水势推导出红曲霉固态培养时空气相对湿度的阈值为75%,并通过实验证明培养时环境相对湿度大于此值时菌体长势较旺。
The surrounding＇s humidity has great effect on Monascus＇ fermentation and modality, which has been discussed relatively less up to date. According to the observation of the Monascus modality with solid state culture, a permeable model for its water transportation was set up by combination of simple diffusion theory with active transportation theory： the water molecules can pass phospholipid bilayer by simple diffusion from the high flow to the low flow and the change of the surroundings humidity arises the changes of the flow direction and velocity. On the other hand, active transportation is lagged and uses more energy compared with the simple diffusion. The paper demonstrated that the active transportation gains higher efficiency than the simple diffusion and when both of them function at the same time could determine the Monascus mycelium＇s configuration and its fermentation capability. With the flow of water, the threshold value of the surroundings humidity has been deduced as RH75%. Moreover, our following experiments have validated the result that this Monascus＇ mycelium can not grow naturally until the surroundings humidity arrives at the above value.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2005年第7期16-18,22,共4页
Food and Fermentation Industries
基金
教育部与地方共建项目(GJD03)
天津市自然科学基金项目(013609911)
