Method for producing ethanol with immobilized microorganism
US4350765A · kind A · utility
25Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1980 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Jun 5, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/10
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Ethanol is produced in high concentration of 75 mg/ml or above such as 200 mg/ml by using an immbolized ethanol-producing microorganism to convert sugar to ethanol in a nutrient culture broth containing not more than 100 mg/ml sugar until the concentration of sugar is not more than 20% of its initial concentration, then adding a fresh culture broth containing not less than 100 mg/ml sugar and converting sugar to ethanol with the immobilized microorganism to produce the desired high concentration of ethanol. The microorganism is preferably immobilized in a sulfated polysaccharide gel as a dense layer near the surface of the gel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.