BPK 110 Lecture Notes - Citric Acid Cycle, Pantothenic Acid, Dietary Reference Intake
19 Sep 2012
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Document Summary
The water-soluble vitamins: 8 bs and 1 c. Consists of 8 vitamin bs and 1 vitamin c. B6, b12, thiamin (b1), riboflavin (b2), niacin (b3), pantothenic acid, biotin, Kidneys constantly remove excess vitamin b by excretion, except b12. Susceptible to destruction by heat or alkalinity. Hydrophilic by nature, water will leech them from vegetables during cooking. Beriberi: thiamin-deficiency disease, muscle weakness, loss of appetite, nerve degeneration. Heat and alkaline (ph 8+) break the thiamin"s bonds. Functions: thiamin pyrophosphate (tpp): a coenzyme where thiamin is a key component of it. Tpp does decarboxylation, removal of a carboxyl group (cooh) from a molecule, then is released as carbon dioxide. Tpp is also a step in the citric acid cycle, and glycosis. Tpp also plays a role in nerve function. Dietary recommendations: rda for adult men: 1. 2 milligrams, rda for adult women: 1. 1 milligrams, pregnant women: 1. 4 milligrams, lactating women: 1. 5 milligrams, daily value: 1. 5 milligrams.
