NFSC 100 Lecture Notes - Lecture 8: Cyanocobalamin, Thiamine, Biotin
3 Oct 2016
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Document Summary
Classi cation: fat soluble vitamins, water soluble vitamins. Thiamin, ribo avin, niacin, pantothenic acid, pyrdoxine, folate, cyanocobalamin, biotin, 1943- vitamin k: dam and doisy. Vitamin d: synthesized in the skin, requires sunlight and precursor (cholesterol) Niacin: requires tryptophan for synthesis, depends on adequate protein status. Vitamin k and biotin: synthesized by bacteria in our gut. Can our bodies use all the nutrients: no. The amount of a nutrient in a door that is actually available for human use. The ef ciency of nutrients that is absorbed, utilized and retained. Factors that affect bioavailability: presence of non-nutritive factors. Ber and phytate- zinc, calcium, copper: chemical form in food. Folic acid > folate: food processing, interactions with other components, medical state of the person, oxygen. The fresher the better: temperature during storage, cooking method, sensitivity to destruction: water soluble > fat soluble ones, vitamin and mineral interaction. Vitamin c and iron absorption: mineral and mineral interactions.
