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谷类食物包括米、面、杂粮等,谷类为主是平衡膳食的基本保证。但当前对谷类食物的营养存在以下误区:误区1:大米、面粉越白越好。当前粮食供应充足,加工精度高的大米、面粉更受人青睐。但从营养学角度看,谷类从外向里可分为谷皮、糊粉层、谷胚和胚乳4部分,营养成分不尽相同。谷皮由纤维素和半纤维素、矿物质组成;糊粉层紧靠谷皮,含有蛋白质和B族维生素;
Cereals including rice, flour, miscellaneous grains, cereal-based is the basic guarantee of a balanced diet. However, the current nutritional status of cereals present the following misunderstandings: Myth # 1: rice, flour, the more white the better. The current grain supply, high precision rice, flour is more favored. However, from the nutritional point of view, cereal from the outside can be divided into the thorn, aleurone, germ and endosperm 4 parts, different nutrients. Valley of the skin by the cellulose and hemicellulose, minerals; aleurone layer close to the valley, containing protein and B vitamins;