The inorganic ions and the amino acids were respectively added to the medium while yeast powder was used as base nitrogen source.
在酵母粉基础发酵培养基中，添加各种无机离子和游离氨基酸，使其含量与酵母抽提物相同。
In this research, compound amino acids (glutamic acid and arginine) were added in litchi juice as nitrogen source and their effects on the fermentation progress were studied.
研究在荔枝汁发酵中添加复合氨基酸(谷氨酸、精氨酸)作为氮源物质对发酵进程的影响。
To insure the freshness of the oil, the air inside the bottle is replaced with nitrogen and natural-source vitamin E is added.
为确保鱼肝油的鲜度，瓶中的空气用很氮来代替，而且加入了天然来源的维生素E。
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