chapter 13: water soluble vitamins Flashcards
What are water soluble enzymes used to form
co enzymes (utilized in energy conservation)
Important source of water soluble vitamins
grains B VITAMINS
Thiamin (B1) sources
pork, sunflower seeds, and legumes
Where is thiamin absorbed?
small intestine and transported in red blood cells (little is stored)
What is Beriberi
Thiamin deficiency, congestive heart failure, nervous system effects, disrupts carbohydrate metabolism
What is Wericke-korsakoff?
Thiamin deficiency, caused by alcohol (decreases thiamin absorption)
Sources of riboflavin
dairy, enriched grains, eggs, meat
Absorption of riboflavin:
absorbed in small intestine, transported by protein carriers in the blood and has a little storage in liver kidneys and heart
Functions of riboflavin:
co-enzymes
energy metabolism
formation of some B vitamins
What is caused by a riboflavin deficiency?
ariboflavinosis (inflamation in tongue)
Functions of niacin
catabolism of carbs, fats, and protein, Redox reactions, required for 200+ reactions
Niacin deficiency causes:
Pellagra, diarrhea and dementia
Pharmacological use of nicotinic acid:
lowers LDLs and increases HDL
function of pantothenic acid
coenzyme A and acyl carrier protein
storage of biotin
some in muscle, liver, and brain