Substitution of yeast extract in industrially relevant bioprocesses (SubBioPro)

Complex nitrogen sources (e.g. yeast extract) are a significant cost factor in industrial bioprocesses. The aim is to reduce costs through the hydrolysis of agricultural raw materials. •After optimizing the chemical hydrolysis of protein-rich agricultural raw materials, the cost of the nitrogen source could be reduced to around 10%. •In the biotechnological production of L-lactic acid and 1,3-propanediol, yeast and meat extract were completely or largely replaced, without any loss in product concentration or maximum productivity.

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