Results showed that corn steep liquor (CSL) can instead of yeast extract as a nitrogen source of succinic acid fermentation.
结果表明玉米浆可以替代酵母膏作为丁二酸发酵的廉价氮源。
The product at the front is exhibiting a lack of growth compared with all the others. This was identified at the time as being the lack of nitrogen because a ‘wrong’ source had been used.
与其它相对，最前面的长得最矮小，这时候的它被认定是由于使用“错误肥料”而造成缺氮的表现。
A new kind of nitrogenous product Bionitrogen was tested as a supplemented nitrogen source instead of the corn protein in penicillin fermentation.
生物氮素作为微生物发酵的一种新型氮源，我们首次在青霉素发酵生产上应用。
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