Spent grain
The main waste products released from brewery is brewers’ spent grain (BSG). According to the Journal of Cereal Science from Science Direct (2006), approximately eighty-five percent of total waste products are brewers’ spent grain.The composition of brewers’ spent grain is lignocellulosic matters. There are several compositions of lignocellulosic, which are seventeen percent cellulose, twenty-eight percent non-cellulosic polysaccharides (mostly arabinoxylans), and twenty-eight percent lignin (S.I. Mussatto, 2006)[2]