In this way man has indirectly used enzymes since antiquity to produce wine, soy sauce, cheese and other products. Now however, enzymes are also used in isolation as biological catalysts.

• 自古以来人们就是这样间接地用酶生产葡萄酒，酱油，奶酪等产品。而现在酶也被单独用作生物催化剂。