In the condition of *0 centi grade,ph6.0,amount of this enzyme it needs that one mg dissolved starch can get dextrine in one minute can be define as enzyme activity.

1. In the process of beer brewing,**8 unit enzyme can be added into one gram raw material after this raw material is mixed with water.It can be added once,and it can increase temperature at once and keep about thirty mins in ninety-five and ninety-seven centi grade.

2. In the process of producing alcohol,6 unit enzyme can be added into one gram raw material.PH is 6.**7.0,and this material can be put into boiling pan or continual boiling machine after it is stired.Temperature can be controled of **0 centi grade,and it can be kept about **0 mins.after it is cold,it can glycate.

3. In the process of business of starch,monosodium glutamate, the PH is 6.**6.5,and ****2 unit enzyme can be added into one gram raw material.If it is liquefied intervally,the temperature can be increase to **0 centi grade at once in the liquefied pot,which can be kept over *0 minutes in *****0 centi grade.If it is liquefied spurtingly,the spurting temperature can achieve to **5 centi grade,and it can be kept *****0 mins in *5 centi grade.