Method for producing an extract of cereal and method for processing this extract into beverage

A method for producing an aqueous extract of a cereal, said method comprising the steps of:

• a) providing grains of a cereal, wherein said cereal is a null-lipoxygenase 1 (LOX-1) mutant barley;
• b) subjecting the cereal grains to a step of germination thereby obtaining germinated grains;
• c) subjecting the germinated grains to a step of heat treatment at a temperature in the range of 40 to 50° C., wherein the duration of the heat treatment is in the range of 1 to 5 h, and wherein said heat treatment is performed in air;
• d) finely dividing said germinated grains while said germinated grains have a water content of at least 20%, thereby obtaining milled germinated grains, with the proviso that said grains do not have a water content below 20% at any time between steps b) and d);
• and
• e) preparing an aqueous extract of said milled germinated grains, thereby producing an aqueous extract of the cereal.