Lecture 10

Lecture 10 - Vitamin 10 Intro Vitamin discovered by fact...

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Vitamin 10 Intro - Vitamin discovered by fact they cured nutrient deficiencies , night blindedness, scurvy - The name vitamins comes from vital amines - Vit – essential organic molecules needed in trace qualities for normal growth, metabolism and function -essential because body cannot make enough or at all - inorganic compounds called minerals - cannot be used as an energy source Parenteral nutrition ie by IV Vitamins 2 classes 1.) Water soluble – hydrophilic -:readily excreted, need a frequent supply, exception B6, B12 body has 1-4 week supply 2.) Fat soluble – hydrophobic – -body can store high levels of storage - not readily lost - toxic if too much - uptake facilitated by lipids in SI Vitamin A Class of compounds called retinoids Draw organic structure here retinal -retinol – OH -retinal – c=0 -retinoic acid - -cooh Retinal most common form stored ?? - 90% of vitamin A in liver up to 1 year supply - Plant version are called cartenoids - Class of yellow or orange pigments - Ex beta-carotene -> (SI) 2 Retinols
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This note was uploaded on 04/15/2008 for the course BIBC 120 taught by Professor Crawford during the Winter '08 term at UCSD.

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Lecture 10 - Vitamin 10 Intro Vitamin discovered by fact...

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