Heterologous expression of an Aspergillus kawachi acid-stable alpha amylase and applications in granular starch hydrolysis
US7037704B2 · kind B2 · utility
22Cited by
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14Claims
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Key dates
| Filing date | Nov 30, 2004 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Nov 30, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present invention relates to a granular starch hydrolyzing enzyme composition comprising an acid stable alpha amylase (asAA) having granular starch hydrolyzing activity. The invention also relates to a one-step method for producing an alcohol which comprises contacting a granular starch substrate with an acid-stable alpha amylase (asAA) having granular starch hydrolyzing (GSH) activity and a glucoamylase (GA) in a fermentation step which also comprises ethanologenic microorganisms at a temperature of 25–40° C. to obtain a fermentation broth having 5 to 20% ethanol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.