For some microorganisms extracellular enzyme production is of major importance for normal growth and it ws from this source that enzymes were first commercially exploited. 对于一些为微生物来说，胞外酶的产生对正常的生长是非常重要的，酶的最初的商业化利用正是来源与此。
Wheat flour was hydrolyzed in vitro by different kinds of enzymes to study the effect of appropriate dosage of enzyme and after enzymolysis on the growth of Litopenaeus vanname. 摘要研究了体外酶解凡纳滨对虾饲料原料中小麦粉的适宜酶解用量及酶解后对凡纳滨对虾生长性能的影响。
