Processes for producing a fermentation product from starch-containing material using polypeptides having pectinase activity
The present invention relates to isolated polypeptides having pectinase activity, and polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.
1 . A process for producing ethanol from starch-containing material comprising the steps of:
i) liquefying the starch-containing material at a temperature range of 85-95° C. using an alpha-amylase;
ii) saccharifying using a glucoamylase;
iii) fermenting using a fermenting organism to produce the ethanol;
wherein at least two polypeptides having pectinase activity are present or added during saccharifying step ii) or fermenting step iii), and wherein the at least two polypeptides having pectinase activity comprises a polygalacturonase from the GH28 family and a pectin methyl esterase from the CE8 family.