Sulfur - B1,B5 and Biotin

[Guest guest]

Hi All,

I've been a FDC holiday so have missed all the posts in the last week.

This sulfur story is still stumping me a bit:

Can anybody tell me if the sulfur contained in Vitamin B1, B5 and Biotin are

going to cause problems for sulphur intolerant people?

Thanks,

Dean

[Guest guest]

If you look at the structure of cysteine there is one bond going from

the S to the C. That leaves the S a little bit free to interact with

mercury, so that is why it can drag mercury a bit and lead to sulfur

food type reactions.

http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=stryer.figgrp.299

Thiamine (B1) the S has 2 linkages going to different Cs, so it is not

as free to interact with Hg and will not cause sulfur food type reactions.

http://209.85.165.104/search?q=cache:1eaJ5_HfdK4J:chemistry.gsu.edu/glactone/vit\

amins/b1/+thiamine+structure&hl=en&ct=clnk&cd=1&gl=ca&client=firefox-a

(If the link doesn't work, you'll have to cut and paste it or google

with keywords 'thiamine' 'structure')

I don't see any S in pantothenic acid

http://www.chm.bris.ac.uk/webprojects2002/schnepp/pantothenic.html

The S in biotin is linked to 2 Cs.

http://www.chem.uwec.edu/Webpapers2001/barkacs/Pages/structure.html

Are you getting the picture?

J

>

> Hi All,

> I've been a FDC holiday so have missed all the posts in the last week.

>

> This sulfur story is still stumping me a bit:

>

> Can anybody tell me if the sulfur contained in Vitamin B1, B5 and

Biotin are going to cause problems for sulphur intolerant people?

> Thanks,

> Dean

>

>