必需营养素

提供必需营养素，包括维他命C、杂、、及硒。

Source of essential nutrients , including vitamins C , B complex , calcium , phosphate and selenium .

通过膳食史可以发现是否是时尚饮食、物品种是否单一、量和必需营养素摄入不足或过多等情况。

A diet history may reveal food faddism , lack of variety , or inadequate or excessive intake of energy and essential nutrients .

维生素E作为动物的必需营养素，在改善牛肉品质中发挥着重要作用。

The Vitamin E is playing an important role in improving beef quality as the essential nutrient of the animal .

人体必需营养素及其功能（一）

Necessary Nutrients for Body and Their Functions ( 1 )

锌和维生素A作为人体必需营养素已被证实具有增强免疫力，抵抗感染的作用。

Zinc and vitamin A are necessary for the normal function of the immune system .

营养学的研究也不支持这种观点，因为核苷酸及其代谢产物均不是人体的必需营养素。

Study of nutriology do not support this viewpoint also , because nucleotides and their metabolizing products are not essential nutrition for the body .

肉碱是机体内重要的条件必需营养素，具有广泛的生理作用。

Carnitines are important conditionally essential nutrients in the organism , with extensive physiological functions , and highly concentrated in the epididymis and sperm .

婴儿和儿童婴儿和儿童对能量和必需营养素的需要量高，其营养低下的危险性也高。

Infancy and childhood : Because of the high demand for energy and essential nutrients , infants and children are at particular risk of undernutrition .

有些人批评四基础是因为它并不能保证对健康有益的所有必需营养素的摄人。

Some people have criticized the use of the Basic Four because it does not insure that all nutrients necessary for good health will be eaten .

维生素E是一种人体必需的营养素，能够保护机体组织结构的完整性，并在生命发育过程中起重要的作用。

Vitamin E is an important nutrient to protect the integrity of body structure , metabolized mainly in liver .

未确认为养分状况必需的营养素由AAFCO犬粮。

Not recognized as an essential nutrient by the AAFCO Dog Food Nutrient Profiles .

尽管如此，也要知道这些营养素同样是人体必需的营养素。

However , one should remain aware of the fact they are essential .

这些结果提示，由人体必需的营养素硒与亚油酸合成的硒化亚油酸所组成的多相脂质体具有明显的抗肿瘤作用。

These results suggest that the polyphase liposome containing Se-LA has obvious antitumor effect .

有了这些知识才能制作出一个提供适当数量的全部必需的营养素的菜单。

This makes it possible to write menus planned to provide appropriate amounts of all the necessary nutrients .

然后，我们很快就发现，叶酸不只能防止神经管缺陷，在许多其他的过程中，它也是必需的营养素。

We discovered soon afterward that folate is important not only in preventing neural tube defects but also in a host of other processes .

维生素A是一种脂溶性维生素，是人体必需的营养素之一。但维生素A不稳定，且对皮肤有刺激性。

Vitamin A , which is one of the nutrients necessary to human , is a kind of fat-soluble vitamin and is unstable and irritating to skins .

硒是一种重要的生物必需微量营养素，在维持包括人在内的很多物种的正常生理功能中起着重要作用。

Selenium ( Se ) is an important , biologically necessary trace element , which plays important biological roles in many kinds of animals , and human beings as well .

同时，镁具有良好的生物相容性，镁离子是一种人体必需的营养素，因此镁合金作为生物材料具有很好的发展前景。

Magnesium has excellent biocompatibility and is an essential nutrient element for human . So it has good prospects as the biological material . Poor corrosion resistance of magnesium alloys provide a guideline for the development of biodegradable metallic materials in the medical field .

Cu是甲壳动物体内必需的微量营养素，不仅是酚氧化酶、超氧化物歧化酶活性中心的重要因子，也是合成血蓝蛋白的必需成分，但是高浓度的铜亦会对生物体会产生毒害作用。

Copper is a essential micronutrients of the crustaceans . It is not only a phenoloxidase and superoxide dismutase activity center factor , but also an essential component of hemocyanin . However , high concentrations of copper will produce toxic effects on crustacean .

结论优化的食物结构模式符合国家提出的食物结构调整的指导方针，经营养学验证，能提供满足当地人群所必需的主要营养素需求。

Conclusion The optimized food structure model complies with the guideline of state food structure adjustment , and the nutritional validation approved that the optimized food structure model can provide suffcient major nutrition requirements .

谷氨酰胺是一种条件性必需氨基酸，是运动员增长肌肉和力量的必需营养素。

Glutamine is a conditionally essential amino acid , and is essential for athlete to attain muscle mass and strength .