LIFESCI 2N03 Lecture Notes - Lecture 62: Vitamin B12 Deficiency, Folate Deficiency, Neural Tube Defect
18 Apr 2016
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Document Summary
Vitamins and minerals difer from macronutrients: structure: independent units (not linked in chains). Minerals not digested: funcion: do not yield energy; assist enzymes, food contents: only small amounts (ug to g) needed in diet. Amount of minerals in the body image on the right: just because we require some in smaller amounts doesn"t mean it is less important. Fat soluble: vitamins a, e, d, and k. Some vitamins found in inacive forms in foods that are converted to acive form in body so have to monitor intake of both precursors and vitamins themselves. Organic can be destroyed not usable by body. Must be stored and cooked carefully to retain acive nutrients: wrap foods and store in airight container, refrigerate most fruits and vegetables, don"t overcook vegetables; consume some raw. Thiamin destroyed by high heat; ribolavin destroyed by uv light, o2 breaks down vit. Major minerals: calcium, phosphorus, magnesium, potassium, sodium, sulphur, chloride.
