Enzymes for Ethanol

Enzymes play an important role in the ethanol production. First, heat-stable alpha amylase is added to the milled corn slurry to gelatinize and liquefy the starch in the liquefaction process. Second, glucoamylase is added to convert the liquefied starch to fermentable sugars in the saccharification stage. In addition, protease can be added to improve the fermentation process, and phytase can be added in the liquefaction stage to enhance the performance of heat-stable alpha amylase.

This case study presents a typical ethanol production process in one of our customers’ factory. The two enzyme products used in this case is Heat-stable Alpha-Amylase HA-400 (activity 40,000 U/ml) and Glucoamylase PUREMEI PG (activity 130,000 U/ml).

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Category: Applications


Part II Process Parameters




Factory 1: 



Contact:      Edna Yang

Tel:              +86 510 8525 9383 


Email:         edna.yang@bolibio.com

Factory 2:



+86 151 5221 3005

Jiangsu Boli Bioproducts Co., Ltd.

93 Yangzhou Rd, Jiangyan Economic Development Zone,Taizhou City,Jiangsu 225500, China  

Jiangsu Boyang Bioproducts Co., Ltd.

30 Tongwang Road, Nantong Economic & Technological Development Zone,Nantong City,Jiangsu 226017, China

Boli USA Contact Information

PO Box 31096 Saint Louis,MO 63131 

Contact:David Singer 



Office:314 991 5191 

Mobile:314 503 0556 

Contact:Song Qian 


Contact:Ms.Edna Yang

Tel:+86 510 8525 9383 

Fax: +86 510 8522 1582 

Mobile:+86 151 5221 3005 



Address:93 Yangzhou Road,Jiangyan Economic Development Zone,Taizhou City,Jiangsu Province,China.

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