FNN 100 Chapter Notes - Chapter 1-8: Retinol Binding Protein, Ferric Edta, Acrodermatitis Enteropathica

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

Document Summary

1: transport iron increases (decreased plasma iron, but increased plasma transferrin adaptive mechanism to increase absorption, plasma hemoglobin production decreases & hematocrit (volume of rbc in given volume of blood) decreases. Arsenic: no studies on humans for nutritional importance. Animal studies: metabolism of methionine, in growth and reproduction, and in gene expression. 90% of arsenic from water is absorbed by body; the amount absorbed of dietary arsenic 60 70%. Inorganic arsenic is transported to liver, -> arsenite ->methylated. Excess: risk of skin, bladder and lung cancer. But water: maximum contamination level of 50 mg/l. Meat, poultry, fish, grains, and cereal products, raw rice, flour, grape juice, and cooked spinach. Boron: some studies: metabolism of vitamin d and estrogen. Nickel: cofactor or structural component of metalloenzymes -hydrolysis and redox reactions and gene expression, & iron absorption. Absorption of less than 10 % and is affected by milk, coffee, tea, orange juice, and ascorbic acid.