Nutrition Final 4 Flashcards
What are the 4 fat soluble vitamins
A, D, E, K
What are the water soluble vitamins
Ascorbic acid, biotin, choline, folacin, myoinositol, niacin, pantothenic acid, riboflavin, thiamin, B6, B12
Fat soluble vitamins
stored in fat, can reach toxicity levels
Water soluble vitamins
will no accumulate in the body, easily removed from the body, stores are very fluid
What was the first vitamin to be discovered
Vitamin B1 or thiamin
What disease is associated with Thiamin deficiency
Beriberi
Functions of thiamin
coenzyme for all enzymatic decarboxylation of alpha keto acids (pyruvate to acetate), vital role in nerve function, role in insulin biosynthesis
Symptoms of deficiency in thiamin
BERIBERI, swollen lower legs, paralysis, cardiovascular damage, head bent backwards, polioencephalomalacia PEM
Toxicity of thiamin
typically non toxic
Second B vitamin to be discovered
Riboflavin or vitamin B2
Three forms of riboflavin
free riboflavin, FMN (flavin mononucleotide), FAD (flavin adenine dinucleotide)
Functions of riboflavin
required as part of many enzymes to utilize (carbohydrates, fats, and proteins), amino acid metabolism, flavoprotein functions, fat metabolism
Symptoms of deficiency of riboflavin
unable to synthesize riboflavin within tissue, alopecia, rough hair coat, lowered feed rate, curled toe paralysis
Symptoms of toxicity of riboflavin
little issue or toxicity
Niacin or third B vitamin
chemically one of the simplest vitamins
2 coenzymes of niacin
NAD and NADP
tryptophan niacin conversion
tryptophan is a precursor for niacin synthesis, ability of tryptophan to meet metabolic requirement for niacin depends on amount available of tryptophan and efficiency of conversion
Symptoms of niacin deficiency
Pellagra (dermal lesions), weakness, digestive disorders