Abstract: There is provided an additive for a bioethanol fermentation process comprising a polyoxyalkylene compound (A) having a Griffin's HLB value in the range of 0 to 6, a polyoxyalkylene polyol (B) and a base oil (C) that is liquid at 25° C. The compound (A) is preferably a mixture of a compound represented by a general formula (1) and a compound represented by a general formula (2). In the formula, R1 and R3 represent alkyl or alkenyl, R2 and R4 represent a hydrogen atom or a monovalent organic group, AO represents oxyalkylene having a carbon number of 3 to 18, a reaction residue of glycidol, a reaction residue of an alkyl glycidyl ether or a reaction residue of an alkenyl glycidyl ether, EO represents oxyethylene, m and n are 1 to 100, and p is 3 to 10.

Abstract: An object of the present invention is to provide an additive that can improve the production efficiency. The present invention is an additive for a bioethanol fermentation process comprising a polyoxyalkylene compound (A) having a Griffin's HLB value in the range of 0 to 6 and a polyoxyalkylene polyol (B). The compound (A) is preferably a mixture of a compound represented by a general formula (1) and a compound represented by a general formula (2). R1O-(AO)m-R2 (1). R3O-(AO)n-(EO)p-R4 (2). R1 and R3 represent alkyl or alkenyl, R2 and R4 represent a hydrogen atom or a monovalent organic group, AO represents oxyalkylene having a carbon number of 3 to 18, or a reaction residue of glycidol, an alkyl glycidyl ether or alkenyl glycidyl ether, EO represents oxyethylene, m and n are 1 to 100, and p is 3 to 10.

Abstract: There is provided an additive for a bioethanol fermentation process comprising a polyoxyalkylene compound (A) having a Griffin's HLB value in the range of 0 to 6, a polyoxyalkylene polyol (B) and a base oil (C) that is liquid at 25° C. The compound (A) is preferably a mixture of a compound represented by a general formula (1) and a compound represented by a general formula (2). In the formula, R1 and R3 represent alkyl or alkenyl, R2 and R4 represent a hydrogen atom or a monovalent organic group, AO represents oxyalkylene having a carbon number of 3 to 18, a reaction residue of glycidol, a reaction residue of an alkyl glycidyl ether or a reaction residue of an alkenyl glycidyl ether, EO represents oxyethylene, m and n are 1 to 100, and p is 3 to 10.

Abstract: An object of the present invention is to provide an additive that can improve the production efficiency. The present invention is an additive for a bioethanol fermentation process comprising a polyoxyalkylene compound (A) having a Griffin's HLB value in the range of 0 to 6 and a polyoxyalkylene polyol (B). The compound (A) is preferably a mixture of a compound represented by a general formula (1) and a compound represented by a general formula (2). R1O-(AO)m-R2 (1). R3O-(AO)n-(EO)p-R4 (2). R1 and R3 represent alkyl or alkenyl, R2 and R4 represent a hydrogen atom or a monovalent organic group, AO represents oxyalkylene having a carbon number of 3 to 18, or a reaction residue of glycidol, an alkyl glycidyl ether or alkenyl glycidyl ether, EO represents oxyethylene, m and n are 1 to 100, and p is 3 to 10.