FNN 100 Lecture Notes - Lecture 8: Enzyme, Bioavailability, Gastroenteritis

• School: Ryerson University
• Department: Nutrition and Food
• Course: FNN 100
• Professor: Jessica Wegener

Document Summary

Enzyme cofactor in redox reactants as: fmn = flavin mononucleotide, fad = flavin adenine dinucleotide. Riboflavin deficiency: almost never alone, but in concert with deficiencies of other water-soluble vitamins caused by low food intake, may accompany cancer, diabetes, symptoms include. Anemia (impairment in hemoglobin ability to transport o in the body. Riboflavin: 95% bioavailable (plants and food, food sources: High calorie bread fortified cereal, organ meats, effs, (whole grains and dark leafy veggies) Riboflavin dris and intake: ai: infants, ear: children, adolescents, adults, rda: children, adolescents, adults, rda men: 19-70yrs 1. 3mg/day, rda women: 19-50yrs 1. 1mg/day. Average riboflavin intake (ofs: men 18-74yrs = 2. 23mg/day, women 19-74yrs = 1. 7mg/day. Niacin (vitamin b3: body can synthesize it from tryptophan. Niacin functions: coenzyme in redox reactions as. Niacin absorption: low concentration facilitated transport, high concentration passive diffusion, absorbed as nad converted to nicotinamide in intestine and liver, excess excreted via urine.