Patent · US Active

Surfactant improved ethanol fermentation method

US10066243B2 · kind B2 · utility

1Cited by

0References

17Claims

0Family size

Assignee

DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES · CN

Inventors

Zongchao Zhang · Dalian, CN
Xiumei Liu · Tianjin, CN

Key dates

Filing date	Apr 14, 2014
Grant date	Sep 4, 2018
Priority date	—
Expiry date	Apr 18, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E50/10
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

A surfactant-improved ethanol fermentation method comprises adding a nonionic surfactant as a protection agent of yeast cell into a fermentation culture medium, therefore greatly improving survival rate of yeast cells in very high gravity ethanol fermentation liquid and endpoint ethanol concentration. The present invention not only improves the cyclic utilization efficiency of the yeast cells, but also achieves the synchronous recycling of the surfactant and a pH adjusting agent. The process of adding the surfactant during VHG fermentation is simple, which can reduce the consumption of water and energy, effectively reduce the fuel ethanol production cost, and improve the fermentation efficiency.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.