BIOCHEMICAL PROCESSES BY MASHING AND CHARACTERIZATION OF THE FERMENTATION OF FEED BARLEY DURING BREWING
GUNKA YONKOVA(1), NELI GEORGIEVA(1)*, TAMARA GINOVA(2), ANNA TERZI(2)
(1)UNIVERSITY OF CHEMICAL TECHNOLOGY AND METALLURGY, 8 KL.OHRIDSKI BLVD., 1756 SOFIA, BULGARIA (2)INSTITUTE OF CRYOBIOLOGY AND FOOD TECHNOLOGY, 53 CHERNY VRAH BLVD., 1407 SOFIA, BULGARIA *CORRESPONDING AUTHOR: NELI@UCTM.EDU
Abstract
The purpose of the present work is to investigate the possibilities for the usage of feed barley in the brewing process. It is proved that using feed barley and the enzyme products Ceremix 2XL and Ultraflo L, the formed wort is richer in ?-amine nitrogen and the viscosity is almost the same as the one of the control liquid. No sufficient difference in fermentation ratio and period was found, comparing sample and control. The physical and chemical properties of the ready beer were almost the same as those of the control one. The most notable differences are concerning the vinyl acetate diketones concentration.