Term
| What vitamin B is Riboflavin? |
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Definition
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Term
| What is the active form of this B2? |
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Definition
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Term
| What are the coenzyme derivatives of this vitamin |
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Definition
| Flavin mononucleotide and flavin adenine dinucleotide |
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Term
| What happens during the digestion of B2 |
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Definition
| Riboflavin is attached to proteins in foods, and HCl frees it in the stomach making it absorbable. |
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Term
| What happens during absorption of B2 |
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Definition
| Absorbed by saturable and energy dependent transporter in the first part of the small intestine. Large amounts may be absorbed via diffusion. |
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Term
| How does bile affect absorption of B2? |
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Definition
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Term
| How does alcohol affect absorption of B2? |
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Definition
| alcohol impairs the digestion and absorption |
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Term
| Where does the conversion of riboflavin into co-enzymes occur? |
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Definition
| The body converts B2 into flavin mononucleotide and flavin adenine diphosphate in almost all cells of the body. Specifically in small intestine, liver, heart, and kidneys |
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Term
| What are the functions of riboflavin in the body? |
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Definition
| is a co-enzyme for TCA cycle, ETC, and beta-oxidation. Converts tryptophan --> niacin. maintains homocysteine in the blood |
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Term
| What are the signs/symptoms of deficiency |
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Definition
Ariboflavinosis (name for deficiency)
Cheilosis (lesions around lips), magenta tongue (inflamed), seborrheic dermatitis (waxy substance around nose), preeclampsia, decreased RBC count |
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Term
| What are the signs/symptoms of toxicity? |
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Definition
| no toxic effects reported. No tolerable upper intake level |
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Term
| Why do deficiencies occur? |
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Definition
| alcoholism, anorexia, lactose intolerance, hypothyroidism and adrenal insufficiency(not converted into coenzymes) pregnancy, vegetarian athlete tend to need more. |
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Term
| What vitamins does riboflavin help convert? |
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Definition
| it helps convert niacin (B3), Folate, B6 (pyridoxine) and vitamin K |
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Term
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Definition
| organ meats (beef liver), dairy, brewers yeast, oats, mushrooms, fortified cereals, cooked spinach, pork chops, chicken |
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Term
| How to store foods with B2 |
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Definition
| opaque containers or foil because it is sensitive to sunlight |
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Term
| How to cook foods with B2 |
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Definition
| Not lost very much in cooking, not very affected by heat, air, or oxidation. Should be cooked in covered pot, and roasted or steamed. Can be lost when foods are boiled or soaked. |
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