虾球麻麻
Vitamin C or L-ascorbic acid, or simply ascorbate (the anion of ascorbic acid), is an essential nutrient for humans and certain other animal species. Vitamin C describes several vitamers that have vitamin C activity in animals, including ascorbic acid and its salts, and some oxidized forms of the molecule like dehydroascorbic acid. Ascorbate and ascorbic acid are both naturally present in the body when either of these is introduced into cells, since the forms interconvert according to pH.Vitamin C is a cofactor in at least eight enzymatic reactions, including several collagen synthesis reactions that, when dysfunctional, cause the most severe symptoms of scurvy.[1] In animals, these reactions are especially important in wound-healing and in preventing bleeding from capillaries. Ascorbate may also act as an antioxidant, protecting against oxidative stress.[2] -----精小锐
草心草心丶
英文:vitamin 维生素对维持人体正常的生长发育起着非常重要的调节作用，维生素按照化学特征，分为脂溶性维生素和水溶性维生素，脂溶性主要包括维生素A、维生素D、维生素E和维生素K。维生素A对于视力发育有非常重要的功效，缺乏维生素A就可能会发生夜盲症。维生素D对于骨骼的形成和发育起着至关重要的作用，可以促进钙质的吸收，如果缺乏维生素D就容易发生骨质疏松或者佝偻病。维生素E具有很强的抗氧化功效，也叫做生育酚，对生殖功能也有一定的影响。维生素K主要作用于凝血功能，对维持正常的凝血系统有非常重要的作用，这是脂溶性维生素。水溶性维生素主要包括维生素B族、维生素C，维生素B族是一个大家族，里面有很多类型。维生素B族主要参与造血的功能以及维持神经系统的正常功能，缺乏维生素B有可能会出现贫血或者神经系统的疾病。另外也可能会导致皮炎、口角炎等，维生素C又称抗坏血酸，具有比较强的抗氧化功效，如果缺乏维生素C可能会出现坏血病，维生素C对于伤口的愈合、抗感染能力和免疫功能也有非常大的影响。总之，维生素分为两大类，脂溶性维生素和水溶性维生素各自有各自的功能、特点，对于人体的生长发育和正常功能都有非常重要的调节作用
