(1) Brewing
– The starting material is starch present in barley seed. During germination, endo-
1,3-β-D-glucanase, amylases, and peptidases are released.
– The enzyme endo-1,3-β-D-glucanase will degrade the glucans so that the
amylases can come into contact with starch granules. Amylases catalyze the
hydrolysis of starch to simple sugars including glucose, maltose, and other
oligosaccharides.
– In addition, peptidases will catalyze the degradation of endogenous proteins
within the seeds. The resulting peptides and amino acids are utilized by the
yeast for growth.