کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
217606 | 1426416 | 2008 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Enhancement of polysaccharide production by optimization of culture conditions in shake flask submerged cultivation of Grifola umbellata Enhancement of polysaccharide production by optimization of culture conditions in shake flask submerged cultivation of Grifola umbellata](/preview/png/217606.png)
Grifola umbellata (Fries) is a traditional Chinese medicinal mushroom. In this paper, the effects of cultural condition on the mycelial growth and exopolysaccharide (EPS) production were studied. Glucose was the best carbon source for mycelia growth and EPS production. Yeast extract was the best nitrogen source for mycelia growth, whereas skim milk as nitrogen source can remarkably improve EPS production. The optimal medium constituents for EPS production were as follows: glucose 3%, skim milk 0.2%, 0.1% KH2PO4, 0.1% MgSO4, 7H2O and 0.005% vitamin B1. The initial pH value of 5 was the most efficient to EPS production. The G. umbellata culture with skim milk as nitrogen source displayed a much higher specific EPS yield of 112.35 mg/g, accounting for a 4.36 times increase compared to that with combined nitrogen source medium.
Journal: Journal of the Chinese Institute of Chemical Engineers - Volume 39, Issue 4, July 2008, Pages 307–311