VB6 2003 - Vitamin B6 - Pyridoxine Vitamin identified in...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Vitamin B6 - Pyridoxine Vitamin identified in 1934, structure confirmed in1938. different forms or vitamers. They are interchangeable and comparably active. Pyridoxine – alcohol form Pyridoxal – aldehyde form Pyridoxamine – amine form
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Fig. 9-35, p. 364
Background image of page 2
Sources PN and PNP found almost exclusively in plant foods. PLP and PMP found almost exclusively in animal products. Good sources include: steak , salmon , navy beans, whole grains , potatoes , bananas , and nuts Very labile: a lot of B 6 is lost in processing: heating, canning, sterilizing, milling as well as during storage and handling. DRI mg/day 1-3 0.5 4-8 0.6 Males 9 – 13 1.0 14 – 50 1.3 51 ->70 1.7 Females 9 – 13 1.0 14 – 18 1.2 19 – 50 1.3 51 - >70 1.5
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Phosphorylated forms need to be dephosphorylated by alkaline phosphatases. PN, PL and PM are primarily absorbed by passive diffusion in the jejunum. Enters the portal blood system unchanged, travel to the liver. Majority (60-90%) is metabolized to PLP.
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/25/2011 for the course NTR 365 taught by Professor Sweltzer during the Fall '11 term at University of Texas at Austin.

Page1 / 14

VB6 2003 - Vitamin B6 - Pyridoxine Vitamin identified in...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online