OPPONG DAVID,CORCORAN MICHAEL L.,PORTO RITA DE CASSIA BORTOTO,MCNEEL THOMAS E.,WIATR CHRISTOPHER L.,CLARK RICHARD A.
申请号：
NZ60212911
公开号：
NZ602129A
申请日:
2011.03.16
申请国别(地区):
NZ
年份:
2015
代理人:
摘要：
Disclosed is a method for producing ethanol by fermentation comprising: a) fermenting a fermentable mash in the presence of at least one nonoxidizing biocide that is a dihalonitrilopropionamide, at least one polycyclic antibacterial peptide (preferably nisin), and yeast in a vessel to produce ethanol and a solids content, wherein said nonoxidizing biocide controls growth of bacteria in the mash without reducing yeast population and is a non-antibiotic biocide, and wherein said non-oxidizing biocide and said polycyclic antibacterial peptide are synergistic with regard to biocidal control of at least one bacteria during and/or after fermentation to produce ethanol； b) distilling the fermented mash to separate at least a portion of the ethanol from said solids content； and c) obtaining a distillers dried grains product from said solid content. Further disclosed is a composition comprising at least one non-oxidizing biocide and at least one polycyclic antibacterial peptide (such as nisin), wherein said non-oxidizing biocide is 2-bromo-2-nitropropane-1,3 diol or 2,2-dibromo-3-nitrilopropionamide or a halide analog thereof, and wherein said non-oxidizing biocide and said polycyclic antibacterial peptide are present in a synergistic amount with regard to controlling at least one bacteria during a fermentation to produce ethanol.
