稻谷由谷壳、果皮、种皮、外胚乳、糊粉层、胚乳和胚等各部分构成。糙米是指脱去谷壳,保留其他各部分的制品。精制大米(即通常所说的大米)是指仅保留胚乳,而将其余部分全部脱去的制品。由于稻谷中除碳水化合物以外的营养成分(如蛋白质、脂肪、纤维素、矿物质和维生素)大部分都集中在果皮、种皮、外胚乳、糊粉层和胚(即通常所说的糠层)中,因此糙米的 Rice from the chaff, peel, seed coat, endosperm, aleurone layer, endosperm and embryos and other parts. Brown rice refers to the removal of chaff, retaining the other parts of the product. Refined rice (commonly known as rice) refers to products that retain only the endosperm while leaving the remainder completely off. Since most of the nutrients (such as protein, fat, cellulose, minerals and vitamins) other than carbohydrates in rice are concentrated in the peel, seed coat, endosperm, aleurone and embryo (commonly known as the bran layer ), So brown rice