誘導後比生長速率對基因重組大腸桿菌生產肌酸酵素的影響，藉由饋料批次培養來進行探討。在此，誘導後比生長速率會受到饋料速率的控制。在重組酵素生產階段裡，細胞質量倍增前細胞可維持良好的質體安定性，此結果顯示質體脫落之時機在細胞分裂時。在誘導後比生長速率範0.088~0.429 h-1之間，隨著誘導後比生長速率的降低，肌酸酵素的比產量也會增加，但肌酸酵素的比生產速率卻隨著下降。

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