The hull residue of grape after brewing contains pigment,tannin,phenols,grease and spicery.It can impact on the environment if not be disposed in time.

• 葡萄皮和葡萄子是酿酒后的下脚料,主要含有色素、单宁、酚类及油脂和芳香类物质,如果不及时处理影响环境卫生。