Abstract

The present invention pertains to the food industry, in particular to the brewing industry, and it can be used in the processing of grain in the process of making malt. More specifically, the present invention pertains to a method of production of grain malt from cereal grain, which may involve: conditioning of the grain at moisture content of the grain in the range of 15-80% and for a time not longer than one day for moisture content in the indicated range; irrigation and/or soaking of the conditioned grain with an aqueous solution of a food enzyme having hydrolase activity; incubating the grains until they germinate with mass transport of the enzyme from the aqueous phase to the grain volume. The method may further comprise that the conditioning and/or the incubating are done until achieving a geometrical relation of channel size between the starch granules in the grain and the hydraulic diameter of the enzyme molecule; drying of the grain to a moisture content level of 6-12%. The present invention also proposes a method of production of grain malt involving: conditioning of the grain at moisture content of the grain in the range of 15-80% and for a time not longer than one day for moisture content in the indicated range; irrigation and/or soaking of the conditioned grain with wort with extractivity of 9 to 18 wt. %, containing previously cultivated microorganisms having hydrolase enzyme activity, and enzymes produced by said microorganisms; incubating the grains until they germinate with mass transport of the enzyme from the wort to the grain volume; wherein the conditioning and/or the incubating are also done until achieving a geometrical relation of channel size between the starch granules in the grain and the hydraulic diameter of the enzyme molecule; drying of the grain to a moisture content level of 6-12%. Furthermore, the invention pertains to a malt product obtained by the indicated methods with improved qualities.

IPC Classes  ?

• A23L 7/25 - Fermentation of cereal malt or of cereal by malting
• C12C 1/02 - Pretreatment of grains, e.g. washing, steeping
• C12C 1/027 - Germinating
• C12C 1/067 - Drying
• C12C 1/18 - Preparation of malt extract or of special kinds of malt, e.g. caramel, black malt
• C12C 5/00 - Other raw materials for the preparation of beer