Refined grains

（重定向自Refined grain）

Refined grains, in contrast to whole grains, refers to grain products consisting of grains or grain flours that have been significantly modified from their natural composition. The modification process generally involves the mechanical removal of bran and germ, either through grinding or selective sifting. Further refining includes mixing, bleaching, and brominating; additionally, thiamin, riboflavin, niacin, and iron are often added back in to nutritionally enrich the product. Because the added nutrients represent a fraction of the nutrients removed, refined grains are considered nutritionally inferior to whole grains. However, for some grains the removal of fiber coupled with fine grinding results in a slightly higher availability of grain energy for use by the body. Furthermore, in the special case of maize, the process of nixtamalization (a chemical form of refinement) yields a considerable improvement in the bioavailability of niacin, thereby preventing pellagra in diets consisting largely of maize products.

单词	Refined grain
释义	Refined grain 原声例句连线杂志 Refined grains, added sugar, ultra-processed junk food, yeah, that's bad. 精制谷物，添加糖，超加工垃圾食品，是的，这很糟糕。科普小杂文 Researchers found that diets high in fiber and low in refined grains, meat and sugars, resulted in less weight gain. 研究人员发现，含有高纤维、低精致谷物、少肉和少糖的饮食，会减少体重增加。 CNN 10 学生英语 2017年4月合集 And they are also going to be cut back on grains, particularly refined grains. 他们也将减少谷物，特别是精制谷物。世界奇趣图谱 It won't surprise you that the book " The Obesity Code" tells people they shouldn't constantly be snacking and they should try and eat healthy foods, more veggies, fruits, healthy proteins, and less refined grains, processed foods and sugar. 你不会感到惊讶， “肥胖密码” 一书告诉人们他们不应该经常吃零食，他们应该尝试吃健康的食物，更多的蔬菜、水果、健康的蛋白质，少吃精制谷物、加工食品和糖。英语百科 Refined grains （重定向自Refined grain） Refined grains, in contrast to whole grains, refers to grain products consisting of grains or grain flours that have been significantly modified from their natural composition. The modification process generally involves the mechanical removal of bran and germ, either through grinding or selective sifting. Further refining includes mixing, bleaching, and brominating; additionally, thiamin, riboflavin, niacin, and iron are often added back in to nutritionally enrich the product. Because the added nutrients represent a fraction of the nutrients removed, refined grains are considered nutritionally inferior to whole grains. However, for some grains the removal of fiber coupled with fine grinding results in a slightly higher availability of grain energy for use by the body. Furthermore, in the special case of maize, the process of nixtamalization (a chemical form of refinement) yields a considerable improvement in the bioavailability of niacin, thereby preventing pellagra in diets consisting largely of maize products.
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