NUTR 2150 Study Guide - Final Guide: Skimmed Milk, Lactose Intolerance, Micelle
18 Mar 2016
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Water soluble vitamins: not stored in the body, excesses are easily excreted, and we need them on a daily basis. Absorbed by simple diffusion or active transport mechanisms. Fat soluble vitamins: stored in the body no easy way to eliminate them, and excesses may be a problem. Carried into the body on the lipoprotein micelles/chylomicrons. Cooking some are inactivated by heat or leached out in water. Processing may be processed out, e. g. remove bran layers rich in vitamins. Xerophthalmia is when mucus formation in the eye is low and keratinization increases, which leads to a dry cornea and increased chances of infection. Vitamin k is given by newborn infants because they don"t have colonic bacteria (k2) in their colons yet to synthesize vitamin k. Scurvy (vit c deficiency) long distance seagoing journeys, where up to 80- 90% of men died because of it, so british sailors were given lime juice.
