Foods and Nutrition 1021 Lecture Notes - Lecture 7: Carotenoid, Hip Fracture, Smog

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The only disease a vitamin can cure is the one caused by a deficiency of that vitamin: pre(cid:272)ursors/pro(cid:448)ita(cid:373)i(cid:374)s. Compounds in foods converted to active vitamins: see tables 7--1, 7--3, & 7--4 for good summary information. Vitamins a, d, e, k: water--soluble vitamins. B vitamins (thiamin [b1], riboflavin [b2], niacin [b3], folate, b12, b6, biotin, pantothenic acid. Vitamin c: fa(cid:272)tors that destroy vitamins. Characteristics of fat--soluble vitamins: vita(cid:373)i(cid:374)s a, d, e, k. Absorbed into the lymph, travel in the blood in association with protein carriers. Stored in the liver & body tissues big storage, better storage than water soluble. May be toxic in excess from supplements (a, d, k) Deficiencies occur with low intake or fat malabsorption. Vitamin a: three active forms in the body. Retinal & retinoic acid (converted by cells from retinol: beta-carotene. Plant--derived precursor (anti-oxidant, prevent cancer: good food sources.

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