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Cards In This Set
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What are Vitamins?
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1. Organic2. do not yeild energy.3. required in small amounts.(All food groups are natural sources of vitamins.)
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What is Bioavailability?
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The rate and extent to which a nutrient is absorbed and used.
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How do you determine bioavailability?
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1. Efficiency of digestion and time of transit through the digestive tract.2. Previous nutrient intake and status.3. Other foods consumed at the same time.4. Method of preperation.5. Sources of the nutrient.
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How do you minimize the loss of vitamin?
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Vitamins are succeptable to destruction by heat, UV, or oxidation.1. Refrigeration.2. Storing cut veggies or fruits in an air tight container.3. Wash fruit of vegetable before cutting.4. Avoid over cooking.
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List the Fat-soluble vitamins.
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Vitamin A,D,E,K
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Describe the following of the fat-soluble vitamins: Absorption, transport, storage, excretion, toxicity, requirement.
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1. Absorption - with lipids into lymph.2. Transport - require protein carriers.3. Storage - In cells associated with fat.4. Excretion - not readily.5. Toxicity - More likely6. Requirement - Periodically (weeks to months)
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List the non fat-soluble vitamins.
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Vitamin B,C
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Describe the following of the non fat-soluble vitamins: Absorption, transport, storage, excretion, toxicity, requirement.
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1. Absorption - Directly into blood.2. Transport - None required.3. Storage - Free in aqueous compartments.4. Excretion - Readily via kidneys.5. Toxicity - Only from supplements.6. Requirement - Frequently (every 1~3days)
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What are minerals?
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1. Inorganic elements2. Some travel freely, some require carriers.3. Often interact with each other.
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List the B vitamins that act as coenzymes in metabolism.
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1. Thiamin2. Riboflavin.3. Niacin4. B65. Folate6. B127. Pantothenic acid8. Biotin
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What does Thiamin(B1) do? What are it's sources?
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1. Assists in breakdown of glucose and branched chain amino acids.2. Assists in producing DNA and RNA.3. Sources: cereals, grains, ham, pork.
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What are the symptoms of Beri-Beri (lack of thiamin) ?
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Fatigue, apathy, muscle weakness.wet: involves cardio vascular system.dry: involves nercous system.
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What does Riboflavin (B2) do? What are it's sources?
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1. Involved in oxidation-reduction reactions in metabolic pathway, involving carbohydrates and fat.Sources : milk, yogurt, organ meats.
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What are the symptoms of Ariboflavinosis (lack of Riboflavin) ?
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Inflames, scaly and greasy looking skin, swelling of mucous membranes in mouth, dry and cracked lips.
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What does Niacin (B3) do? What are it's sources?
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1. Assists in carb and fat metabolism.2. Plays a role in DNA repair and replication.Sources : fish, meat, poultry, enriched bread.
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