本文发表在 rolia.net 枫下论坛Vitamin C
Vitamin C is an essential water soluble vitamin. Humans are amongst the few mammals that cannot produce vitamin C intrinsically and as a result must obtain it from their diet. Vitamin C is available in many different forms including ascorbic acid, mineral ascorbates such as calcium ascorbate, and ascorbyl palmitate a fat soluble form. Vitamin C is an antioxidant, protecting the body against oxidative stress caused by free radicals and reactive oxygen species. It is also a cofactor in at least eight enzymatic reactions. Vitamin C is needed for the production of collagen a component of connective tissue. These fibres are in many places throughout the body; providing firm but flexible structure. Some tissues have a greater percentage of collagen, especially: skin, mucous membranes, teeth, and bones. Vitamin C is required for making of dopamine, noradrenaline, and adrenaline in the nervous system or in the adrenal glands. Vitamin C is also needed to make carnitine, important in the transport of fatty acids into cell mitochondria for energy production.
维生素C
维生素C是一种人体必需的水溶性维生素。人类是哺乳动物当间极少数不能自身产生维生素C的物种,因此必须从饮食中获取它。
维生素C有许多种不同的形式存在,包括抗坏血酸,抗坏血酸无机盐例如抗坏血酸钙,以及溶性抗坏血酸棕榈酸酯脂溶性。
维生素C也是一种抗氧化剂,能够保护身体免受由自由基和活性氧类带来的氧化疲劳。它是至少八个酶促反应中的辅助因子。
维生素C为胶原结缔组织的组分的生产提供供给。这些纤维分布整个身体的各个部位,提供坚固并且灵活的结构。其中一些组织含有胶原蛋白并且占有有较大的比例:分别分布在皮肤,粘膜,牙齿和骨骼上。
维生素C是制造在神经系统中或在肾上腺内的多巴胺,去甲肾上腺素和肾上腺素的必须品。维生素C同时也是制造肉碱的必需品,肉碱在脂肪酸进入细胞线粒体的运输中具有重要的作用以便人体产生能量。
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Vitamin C is an essential water soluble vitamin. Humans are amongst the few mammals that cannot produce vitamin C intrinsically and as a result must obtain it from their diet. Vitamin C is available in many different forms including ascorbic acid, mineral ascorbates such as calcium ascorbate, and ascorbyl palmitate a fat soluble form. Vitamin C is an antioxidant, protecting the body against oxidative stress caused by free radicals and reactive oxygen species. It is also a cofactor in at least eight enzymatic reactions. Vitamin C is needed for the production of collagen a component of connective tissue. These fibres are in many places throughout the body; providing firm but flexible structure. Some tissues have a greater percentage of collagen, especially: skin, mucous membranes, teeth, and bones. Vitamin C is required for making of dopamine, noradrenaline, and adrenaline in the nervous system or in the adrenal glands. Vitamin C is also needed to make carnitine, important in the transport of fatty acids into cell mitochondria for energy production.
维生素C
维生素C是一种人体必需的水溶性维生素。人类是哺乳动物当间极少数不能自身产生维生素C的物种,因此必须从饮食中获取它。
维生素C有许多种不同的形式存在,包括抗坏血酸,抗坏血酸无机盐例如抗坏血酸钙,以及溶性抗坏血酸棕榈酸酯脂溶性。
维生素C也是一种抗氧化剂,能够保护身体免受由自由基和活性氧类带来的氧化疲劳。它是至少八个酶促反应中的辅助因子。
维生素C为胶原结缔组织的组分的生产提供供给。这些纤维分布整个身体的各个部位,提供坚固并且灵活的结构。其中一些组织含有胶原蛋白并且占有有较大的比例:分别分布在皮肤,粘膜,牙齿和骨骼上。
维生素C是制造在神经系统中或在肾上腺内的多巴胺,去甲肾上腺素和肾上腺素的必须品。维生素C同时也是制造肉碱的必需品,肉碱在脂肪酸进入细胞线粒体的运输中具有重要的作用以便人体产生能量。
<本文发表于: 相约加拿大:枫下论坛 www.rolia.net/f >更多精彩文章及讨论,请光临枫下论坛 rolia.net