论文部分内容阅读
人体必须从外界摄取的营养素共有四十多种。这些营养素除有空气和水外,其他必须营养素分五大类:碳水化合物、脂肪、蛋白质、矿物质和维生素。碳水化合物的糖和淀粉是必需营养素葡萄糖的来源。脂肪提供必需营养素甘油三(酸)酯和亚油酸。由蛋白质取得必需营养素氮元素和9种氨基酸,即甲硫氨酸、缬氨酸、亮氨酸、异亮氨酸、赖氨酸、苏氨酸、色氨酸、笨丙氨酸和儿童需要的组氨酸。必需营养素中矿物质17种。
There are more than 40 kinds of nutrients that the body must absorb from the outside world. These nutrients in addition to air and water, the other nutrients must be divided into five categories: carbohydrates, fats, proteins, minerals and vitamins. Carbohydrate sugars and starches are a source of essential nutrient glucose. Fat provides the essential nutrients triglycerides and linoleic acid. The essential nutrients nitrogen and 9 amino acids are obtained from protein, namely methionine, valine, leucine, isoleucine, lysine, threonine, tryptophan, stupid alanine and children’s needs Histidine. Essential nutrients in 17 kinds of minerals.