Vitamin, water-soluble

Chemical Class NUTR-vitamin, water soluble I Clinical Pharmacology ... [Pg.90]

Answer Unlike water-soluble compounds, lipid-soluble compounds are not readily mobilized— that is, they do not readily pass into aqueous solution. The body s lipids provide a reservoir for storage of lipid-soluble vitamins. Water-soluble vitamins cannot be stored and are rapidly removed from the blood by the kidneys. [Pg.103]

Water-soluble vitamins. Water-soluble vitamins include vitamin C, and those of the B-complex group biotin, folate, niacin, pantothenic acid, riboflavin, thiamine, vitamin Bg and vitamin B12. They function mainly as coenzymes and prosthetic groups. [Pg.26]

When it was realized that milk contained more than one accessory food factor, they were named A (which was lipid-soluble and found in the cream) and B (which was water-soluble and found in the whey). This division into fat- and water-soluble vitamins is still used, although there is litfie chemical or nutritional reason for thus, apart from some similarities in dietary sources of fat-soluble or water-soluble vitamins. Water-soluble derivatives of vitamins A and K and fat-soluble derivatives of several of the B vitamins and vitamin C have been developed for therapeutic use and as food additives. [Pg.2]

Vitamins—water-soluble and fat-soluble vitamins (Figure 7.7)... [Pg.164]

Carbohydrates Vitamins Fat-soluble vitamins Water-soluble vitamins... [Pg.2707]

Nuttall and Bush (102) described a TLC chromatographic method for the analysis of multivitamin preparations. After extraction of fat-soluble vitamins, water-soluble vitamins and water-soluble materials were separated in three TLC systems. Biotin was resolved with acetone-acetic acid-benzene-methanol (1 1 14 4) as solvent and visualized by spraying o-toluidine-potassium iodide. Standards can be included if quantitative results are required. However, the reproducibility of the technique has not been tested. Groningsson and Jansson (105) worked out a TLC method for the determination of biotin in the presence of other water-soluble vitamins. After dissolution of the lyophilized preparation and addition of the internal standard (2-imidazolidone), the sample was applied on a silicagel plate and eluted with chloroform-methanol-formic acid (70 40 2). Biotin was visualized by spraying with p-DACA and determined in situ by reflectance measurements. The sensitivity of the method could be increased by spraying with paraffin after the coloring procedure. LFnder these conditions the detection limit was 10 ng. [Pg.503]

Minerals EMicrol fit-Solulile Vitamins Water Soluble Vitamins ... [Pg.410]

Fat-Soluble Vitamins Water-Soluble Vitamins Summary... [Pg.663]

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