供应:玉米黄质 万寿菊提取物

玉米黄质
一.功效与应用：
由菊科植物金盏花Marigold（又称万寿菊Tagetes erecta）的花瓣提取而得，属于类胡萝卜素。
英文名：Zeaxanthin，B-carotene-3，3‘-diol，Meso-zeaxanthin；
(3R,3'R)-beta,beta-Carotene-3,3'-diol;4-[18-(4-Hydroxy-2,6,6-trimethyl-1-cyclohexenyl)-3,7,12,16-tetramethyl-octadeca-1,3,5,7,9,11,13,15,17-nonaenyl]-3,5,5-trimethyl-cyclohex-3-en-1-ol
分子式：C40H56O2  
分子结构： 
CAS No.144-68-3  EINECS 登录号：205-636-4  
分子量：568.87
脂溶性粉末或油状物，为B-胡萝卜素的衍生物，溶于多种**溶剂，不溶于水，在体内不能转化为VA，没有VA活性，对光和热稳定性差，尤其光照对玉米黄质影响较大；对三价Fe和Al离子的稳定性也差但对其它离子、酸、碱及还原籍
剂Na2SO3等较稳定。
主要功效应用如下：
1.	预防老化性黄斑退化症（老年人失明的主要病因）；
2.	预防白内障、内膜中层增厚、心脏病：
3.	改善视网膜色素变性患者的病症；
4.	降低色相差，使视力更精准；保护视网膜在吸收光线时免受氧化伤害；
5.	*作用，防止癌细胞的扩散。
广泛应用于食品（GB2760-86规定，较大使用量0.5%）、保健品、化妆品中。
二.质量规格：
5%，10%,20%，50%,75%; HPLC
三.产品特点：
1.溶剂残留低，灰分含量少，重金属残留合格；
2.生产工艺稳定，质量控制严格；
3.技术服务完善。

Zeaxanthin
1.	Function and Application
 Zeaxanthin is less common in the human diet-coming from certain orange and yellow fruits and vegetables Meco- zeaxanthin is not found in the normal human diet, and is thought to originate from Lutein. The high concentrations and specific uptake of the macular carotenoids is mediated by specific binding proteins that draw them into the tissue and stabilize them.
Studies have shown that eating lutein-and zeaxanthin-rich foods or taking supplements of these carotenoids canrestore macular pigment density, which declines with age .In fact, one such study of advanced macular degeneration patients who were taking high-dose lutein supplements(4mg or more per day) experienced ”normal” levels after a few months. A Harvard-led study demonstrated that eating lutein-rich foods five days per week meant subjects were eight times less likely to develop macular degeneration compared to those who consumed the same foods just once per month.
2.	Quality and Specifications
5%，10%,20%，50%，75%  HPLC
3.	Product characteristics
a.	Low ash, impurity, heavy metal, solvent residue.
b.	Stable technology quality control.
c.	Complete product tracing system and technical service.