Glucoamylase variants and polynucleotides encoding same

The present invention relates to glucoamylase variants having improved thermal stability and compositions comprising such variants. The invention further relates to polynucleotides encoding such variants, and vectors and host cells comprising genes encoding such variants, where these vectors and host cells are also capable of producing such variants. The invention also relates to methods of liquefying starch-containing material using or using these variants or compositions, and saccharification thereby produced by the methods. The invention also relates to methods of saccharifying starch-containing material using or using these variants or compositions, and the sugars thus produced by the methods. The invention further relates to a process for producing a fermentation product from a starch-containing material or a cellulose-containing material, as well as an enzyme blend or composition, or a recombinant host cell or fermentation organism suitable for use in the process of the invention. 本发明涉及具有改善的热稳定性的葡糖淀粉酶变体