Aspergillus niger and flavoring yeast were added into Aspergillus oryzae mash to co-ferment in order to study the effect of improving the quality of soy sauce.

在米曲霉酱醪中添加黑曲霉和增香酵母共同发酵，研究其提升酱油品质的效果。

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Beijing Run Dragon Biotech Co., Ltd mainly undertakes the development and productions in the fields of biological ferment, refined chemical industry.

北京润物龙生物科技有限公司主要从事生物发酵、精细化工领域的研发与生产。

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