NTR 109 nutirition vitamin outline (lecture 5)

NTR 109 nutirition vitamin outline (lecture 5) - Lecture5...

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Lecture 5 Vitamins Vitamins 0. Compounds that perform bodily functions 1. Essential Nutrients   -body  cannot  produce 2. No calories  3. Facilitate energy yielding chemical reactions  4. 5. 13 recognized vitamins FUN  FACTS 0. Vitamins were named in order of discovery (A, B, C, D, …) 1. Other substances found not to be essential were dropped (e.g.,  vitamin P) 2. B-vitamins were thought to be one vitamin;  turned out to be many  (e.g., B1, B2, B3,…) Vitamins 6. Water Soluble 0. 1. Stored in Small amounts (2-3 yrs of storage of vitamin B12 in  the liver )
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2. Less toxic  3. High doses excreted  4. Increases risk of deficiency because our body do not produce  them Water soluble vitamins can be destroyed during food storage processing preparation Vitamin B : Thiamin / Riboflavin/ Niacin/ Vitamin B6/ Vitamin B 12/ Pontothenic Acid/ Biotin/ Folate Vitamins 7. Fat soluble 5. A, D, E, K 6. Stored in large amounts in body fat  7. More time to become deficient than water soluble vitamins  8. Highly toxic, especially vitamin A  Folate :  Helps to synthesize DNA  8. Function ( when folate increase, homocystein decreases)  9. Required to produce new cells  10.Homocysteine metabolism 11. Red Blood cells : assist formation of blood cells  12. Neurotransmitter formation: compound made by neurocells  that allows communication between it and other cells  13.Intestinal cells
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Sensitive to heat, oxidation, UV lights -> these destroy folate  50-90 % folate in food Folate 9. Deficiency 14. Anemia (Megablastic) or (Macrocytic)  15.  Heart Disease (Increases homocysteine)  16. Neural tube defects : abnormality in brain and spinal cord  Nueral tube: gives rides to brain, spinal cord, and CNS  Ntd: type of birth defects Effect 3000 births each year Folate 3. Neural tube defects 0. Neural tube develops in the 1 st   month of gestation 1. Spina Bifida – failure of neural tube to close  *planned pregnancy is important Spina Bifida Folate 10.Sources 17. Enriched pasta(25% of daily value), cereal, rice and bread 18. Dark green leafy vegetables (spinach, asparagus)  - Fresh uncooked vegetables, fruits are the best cause the heat destroys folate! 19.Beans, Lentils  20.Orange Juice  21.All women of childbearing age 400ug/day 
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Vitamin C 11.Synthesized by most animals  22.Not by humans 12. Decreased absorption with high intakes : your body will not use  when it doesn’t need  13.Excess-> excreted  23.Diarrhea common  14.Seneitive to  24.Cooking/heat  25.Iron, Copper, Oxygen  -more than 2000 can cause GI upset -vitamin C doesn’t cure common cold Functions of Vitamin C 0. Synthesis of collagen(collagen: protein found in connective tissue –
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This note was uploaded on 03/22/2011 for the course NTR 101 taught by Professor Chabot during the Spring '11 term at Buffalo State.

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NTR 109 nutirition vitamin outline (lecture 5) - Lecture5...

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