免费视频色 I 久久网中文字幕 I 日本三级欧美三级 I 日本丰满bwbwbw I 国产蜜臀在线 I 成人免费黄色大片 I 久草手机在线视频 I 日本丰满护士bbw I av色欲无码人妻中文字幕 I 69国产精品 I 强奷乱码中文字幕熟女导航 I 天天色免费视频 I 91无遮挡 I 亚洲视频在线视频观看视频在线 I 天堂中文字幕在线观看 I 精品亚洲va在线va天堂资源站 I 中文 欧美 日韩 I 都市激情av I 呦呦精品 I 极品少妇被后入内射视 I 杨幂毛片午夜性生毛片 I 亚洲情一区 I 欧美精品v国产精品v日韩精品 I 国产成人精品aa毛片 I 91视频观看免费 I 日韩欧美中文在线视频 I 夜色毛片永久免费 I 成年人黄色免费观看 I 网友自拍视频一区 I wwwav国产 I 开心黄色网 I 日韩激情av在线 I 男生插女生的视频 I 在线观看精品国产视频 I 色先锋在线看片

×

Vitamin A

Products Introduction

Basic information

Vitamin A, chemically known as retinol, was the first vitamin to be discovered.

Edges of NHU

As one of the largest vitamin manufacturers in the world, we provide series of formulations to meet requirements of vitamin A antioxidants from different customers.

As one of the few large vitamin suppliers with the ability to produce VA variety of antioxidant VA products, we provide vitamin A series products that perfectly replace ETQ products for the European Market, and ETQ antioxidant VA products for other markets to meet customers long-standing usage habits.

NHU Nutrition Research Institute (NHU-NRI) is dedicated to extensive applied research in the space of nutrition to accommodate itself to growing market demand. We set our hearts on providing better solutions for users through product R&D, research on nutrition and applied technologies, as well as technical services. Every VA product that we launched on the market has passed stringent application test to assure that it meets the requirements of downstream customers. 

Stability

Considering the poor stability and high susceptibility of vitamins, their utilization rate is fairly low. In the practical application process, there are many factors affecting the stability of the product.
1.moisture
2.storage time
3.temperature
4.trace elements and minerals
5.carriers and diluents
6.feed processing methods
In addition to the above factors, light, embedding methods, and interaction among vitamins can all result in the change of vitamin content. For example, the high water-absorbency and alkalinity of choline chloride has destructive effect on other vitamins, which is exacerbated when synergized with other trace elements. Vitamin A is extremely unstable as it contains conjugated?double?bonds. When exposed to UV-light, it is prone to isomerize, thus resulting in lower retention rate. Under the light, the dimerization reaction readily occurs, which reduces the product’s bioavailability.

Products Recommended