B6 Flashcards
1
Q
Does B6 have one form
A
no; several
2
Q
Name the 3 forms
A
pyridoxine, pyridoxal, pyridoxamine
3
Q
what form is pyridoxine
A
alcohol form
4
Q
what form is pyridoxal
A
aldehyde form
5
Q
what form is pryeidoxamide
A
amine form
6
Q
what does each form have
A
5’-phosphate derivative (PNP, PLP, PMP)
7
Q
what function does PNP, PLP, PMP have
A
coenzymes
8
Q
sources of B6
A
bananas, navy beans, walnuts, salmon, sirloin, light meat
9
Q
What is the most stable state
A
pyridoxine
10
Q
What forms are found in animal products
A
pyridoxamine and pyridoxal
11
Q
what form is in plants
A
pyridoxine
12
Q
How is B6 digested
A
phosphorylated vitamers must be dephosphorylated prior to absorption
13
Q
What enzyme is required to digest B6
A
intestinal phosphatases
14
Q
How is B6 absorbed
A
primarily through passive diffusion
15
Q
What is the absorption rate of B6
A
71-82%
