provitamin A

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provitamin /pro·vi·ta·min/ (-vi´tah-min) a precursor of a vitamin.

provitamin A usually β-carotene, sometimes including any of the provitamin A carotenoids.

provitamin D2 ergosterol.

provitamin D3 7-dehydrocholesterol.

provitamin A

Any of the carotenoids that are precursors of vitamin A and exhibit qualitatively the biological activity of beta-carotene; they are present in fish-liver oils, egg yolk, milk products, green-leaf or yellow vegetables, and fruits.

provitamin

a substance, e.g. ergosterol, from which the animal organism can form a vitamin.

provitamin A

see carotene.

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7-dehydrocholesterol antioxidant vitamin carotenase dioxygenases Fat-soluble vitamins previtamin provitamin provitamin D2 ultraviolet ultraviolet rays vitamin vitamin A1 vitamin A2 vitamin B1 vitamin B2 vitamin D vitamin D2 vitamin D3 vitamin K1			Carotenoids play an important role in human health by acting as sources of provitamin A or as protective antioxidants. How to boost nutritional value of pumpkins, squash by Asian News International some justification for the hypothesis that provitamin A or beta-carotene may decrease the risk of mesothelioma. Vitamin a - Possible New Drug for Mesothelioma by Bello Kamorudeen / Health, general community The ten chapters cover phytoestrogens, fatty acids in functional foods, flavanoids, anthocyanins, carotenoids and provitamin A, chlorophyll, water-soluble vitamins, amino acid analysis, and carbohydrates and other electrochemically active compounds in functional foods. Methods of analysis for functional foods and nutraceuticals, 2d ed by SciTech Book News			proventricular proventriculotomy proventriculus prover Provera proverbs test provertebra Providencia Providentia provider provider number provider practice acts provider profile provider-based Provigil Provincial proving provings Provir provirus provisional provisional prosthesis provisional status provisional tolerable weekly intake provitamin provitamin A provitamin D2 provocation test provocative diagnosis provocative exposure provost PROWESS prox Proxemics proximad proximal proximal carcinogen proximal cavity proximal contact proximal contour proximal dental caries proximal part of prostatic urethra proximal radioulnar articulation proximal renal tubular acidosis proximalis proximate proximate cause proximity principle proximo- proximoataxia proximobuccal			Provisions for Credit Losses Provisions for Income Taxes provisions of a law Provisions of Industrial Facilities Provisions of Oxford Provisions of Westminster Provisions pour Sinistres A Payer Provisions Storage Assemblies Provisions Supply Office Provisions Update Committee Provisions, Bad Debt proviso proviso Proviso est providere praesentia et futura Proviso Leyden Council for Community Action provisoes provisoes Provisor provisorily provisorily provisors Provisors, Statute Provisorship provisory provisory provisos provisos provitamin provitamin provitamin provitamin A provitamin A carotenoids provitamin A carotenoids provitamin A carotenoids provitamin D2 provitamin D2 provitamin D2 provitamin D3 provitamin D3 provitamin D3 provitamins provitamins provitamins provitrain provitrinite Provo Provo Provo Canyon School Provo City Redevelopment Agency Provo City Youth Government Provo High School Provo River Restoration Project Provo River Water Users Association Provo, UT, USA - Provo provocare provocateur provocateur provocation provocation provocation provocation

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