固相萃取一高效液相色谱法测定婴幼儿食品中的维生素D2、D3张敏+,游理军,唐俊,黄丽,曾凯( 南昌市食品质量卫生安全监督检验中心,南昌330012)摘要:目的:建立固相萃取一高效液相色谱法测定婴幼儿食品中的VD:、VD,含量的方法。方法在已有研究基础上对样品前处理方法进行了优化和改进,利用二甲基亚砜、甲醇和正己烷:甲基叔...
维生素D补充剂包含两种形态:植物来源的维生素D2(麦角钙化醇)和动物来源的维生素D3(胆钙化醇)。这两种维生素都能被肠道吸收,从而提升血液中的维生素D含量。然而,多数研究显示,维生素D3比维生素D2更地增加血液中的维生素D水平,并且这种效果持续的时间更长。 哪些人群需要补充更多的维生素D? 一些人群更容易出现维生素D...
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vitamin D statusvitamin D2vitamin D3Vitamin D is unique among the essential nutrients in that it can be made in the body via exposure of the skin to sunlight. There are few rich sources of vitamin D in the diet. Vitamin D is essential for maintaining healthy bones and deficiency of ...
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Food Grade Nutritional Supplement Pure Natural Raw Material CAS 50-14-6 Ergocalciferol Vitamin D3 Powder with Bulk Price, Find Details and Price about Vitamin D2 Ergocalciferol Vitamin from Food Grade Nutritional Supplement Pure ...
Product Name:Vitamin D2 Powder;Specification:99%;MF:C28H44O;Particle Size:95% Pass 80 Mesh;Sample:Available;Shelf Life:2 Years;MOQ:1 Kg;Packing:25kg/drum 1kg/foil Bag;EINECS No.:200-014-9;CAS:50-14-6;Form:Powder;Part:Other;Extraction Type:Solvent Extract
Vegetarian sources of vitamin D include the following: Foods and BeveragesVitamin D in Micrograms (mcg)/Serving Fat-free milk 2.5 mcg/1 cup Fortified margarine .5 mcg/1 tsp Fortified cereals .6-3 mcg/serving Fortified soy foods 1–2.5 mcg/serving There are no dependable unfortified sources ...
Used in the treatment of acute and chronic and potential tetany disease and idiopathic tetany after the operation. Function Vitamin D2 is produced by ultraviolet radiation on ergosterol in plants, but its stock in nature is very small. Vitamin D2 belongs to...
Plant-based foods are generally considered rich sources of vitamins,except for vitamin D(Japelt and Jakobsen,2013)andvitamin B12(Watanabe,2007).Briefly,the main sources of B vitamins are whole grain–based foods;cereal germs;legumes;brown rice;some fresh vegetables,notably green leafy vegetables(ric...