vitamins chapter 18. definition of vitamins: complex organic substances important to the body....
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Enzymes speed up reactions that would otherwise proceed to slowly to sustain cell life.TRANSCRIPT
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VITAMINSCHAPTER 18
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• Definition of vitamins: complex organic substances important to the body.
• Vitamins work with enzymes to perform a specific purpose in the body.
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• Enzymes speed up reactions that would otherwise proceed to slowly to sustain cell life.
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Groups of Vitamins
• Water Soluble and Fat Soluble• Water Soluble
–Not stored in the body–Deficiencies appear rapidly–Vitamins C and B-Complex
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B-Complex
• Thiamin – (B 1 ) needed to metabolize carbohydrates.–Food source is pork, peanuts,
wheat germ–Easily destroyed by oxidation
and degraded by high temperatures
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• Riboflavin-(B 2) Important for growth. Found in broccoli and milk
• Niacin – releases energy from carbohydrates, fats, and protein.
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• Vitamin B 6 - Helps body use carbohydrate and protein. Keeps nervous system healthy. Found in Poultry, whole grains, and legumes.
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• Vitamin B 12 – helps body use carbohydrate, fat, and protein and teams with folate to build blood cells. It is needed for healthy nervous system.
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• Folacin (Folate or Folic Acid) Prevents birth defects of the brain and spinal cord.
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• Pantothenic Acid – helps body release energy from carbohydrates, fat, and protein and helps produce cholesterol. Found in meat, eggs, milk, and whole grains.
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• Biotin-Helps body use carbohydrate, fat, and protein. Found in green leafy vegetables, whole grains, and egg yolk.
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VITAMIN C
• Found in citrus fruit, potatoes, tomatoes, broccoli, bell peppers, and cabbage.
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• Helps prevent cell damage. Is an antioxidant (it is oxidized instead of the other cells)
• Helps form collagen in connective tissue
• Promotes iron absorption
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• Assists in forming hard teeth.• Helps the body heal wounds
and resist infection.
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FAT SOLUBLE VITAMINS
• Vitamins A D E K• Dissolve in fat not water, are
stored in the body. • Deficiencies are slow to show.
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Vitamin A
• Found in butter, egg yolk, and cheese.
• Functions = Maintains healthy skin and mucous membranes, normal vision, bone development, and red blood cells.
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Vitamin D
• Found in eggs and fish oils and Sunshine.
• Functions =Needed for growth and repair of bones and teeth. Works with calcium and phosphorus making them available to be used.
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Vitamin E
• Functions as an antioxidant protecting vitamin A and lipids from oxidation damage.
• Found in soybean oil and wheat germ oil
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Vitamin K
• Functions -Necessary for blood to clot and allows bones to absorb minerals needed for growth.
• Found in milk and dark green leafy vegetables.
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• Vitamin Precursor – a compound that can be changed into a vitamin.vitamin. –Beta CaroteneBeta Carotene an orange plant pigment that can be changed into vitamin A in the intestines and liver.
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•Sources of beta carotene are carrots, spinach, broccoli, sweet potatoes, and apricots.
•Tryptophan may be a precursor for niacin.