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Manufacturers supply vitamin C (L-ascorbic acid)

total supply
0 公斤
MOQ
1 公斤
area
ShaanxiXi'an City
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area:Shaanxi Xi'an City

Member level:corporate memberYear1

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West Andino Biotechnology Ltd

  • name:罗女士(lady) 销售经理
  • phone:029-86182250
  • mobile phone:13572136046
  • address:陕西西安市
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Product Details
规格:
99%

维生素C,Vitamin C,L-抗坏血酸
【品名称】维生素C
【外观】:无色晶体
【熔点】190 - 192℃
CAS NO.50-81-7
【紫外吸收最大值】:245nm
【荧光光谱】:激发波长-无nm,荧光波长-无nm
【溶解性】:水溶性维生素
【比旋度】+20.5°+21.5°
【分子式】:C6H8O6
【分子量】:176.13
【化学文摘登记号】: [50-81-7]

【理化性质】:本品为白色结晶或结晶性粉末,熔点190℃192℃;无臭,味酸;久置色渐微黄。本品在水中易溶,在乙醇中略溶,在氯仿或乙醚中不溶。本品 5%W/V)水溶液 pH 2.12.6, 本品10%W/V)水溶液的比旋度为 +20.5+21.5
质量标准:中国药典2000年版二部

【维生素C简介】
维生素C又称抗坏血酸,是水溶性维生素,是知名度最高的营养素,不但是美容灵药,更是抗氧化,保护细胞,甚至有效抗癌的维生素,它普遍存在于蔬菜水果中,但容易因外在环境改变而遭到破坏,人体自身无法合成维生素C,必须额外从食物中获取。水溶性的维生素C极易在水中造成流失。

生化反应

维生素C在酸性溶液中比较稳定,易溶于水,遇热和碱都会受到损害。空气中容易被氧化,与某些金属,特别是铜接触更容易被破坏。其氧化会因光线,温度,碱性,氧化酶或铁、铜等微量元素的存在而加速进行。


【一般作用】

1、维生素C能增强皮肤弹性,预防色斑;
2、维生素C可促进伤口愈合,治疗外伤、灼伤,加速手术后的恢复;
3、维生素C可促使蛋白质细胞互相牢聚,有助制造胶原,防止衰老,延长生命;
4、维生素C可有助于治疗牙龈出血;
5、维生素C可以帮助机体吸收铁质,分解叶酸;
6、维生素C能防止致癌物质亚硝基胺的形成;
7、维生素C可预防坏血病的产生。
8、帮助降低血液中的胆固醇; 减少静脉中血栓的发生;
9、增强治疗尿道感染的药物之疗效;
10、预防滤过性病毒和细菌的感染,具有抗癌作用;并增强免疫系统功能;
11、可治疗普通的感冒,并有预防的效果;可使蛋白质细胞互相牢聚,从而能延长寿命;

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