Talk:Galactose

Glucose is sweet?

Not to my taste buds. Perhaps the opening sentence should be changed. —Preceding unsigned comment added by 82.8.177.83 (talk) 16:01, 9 November 2009 (UTC)

Image

Image is missing. -- Heron 12:09, 16 Nov 2003 (UTC)

Indeed, I replaced it with a version I copied from nl:Afbeelding:Galactose.png to the Commons. There's also an interesting image at de:Bild:Galaktose.jpg, though the labels are in German. Wmahan. 05:31, 2005 Apr 22 (UTC)

Lactose/lactase

"Galactose is hydrolysed by lactase."

Isn't it acutally the case that _lactose_ is hydrolysed by lactase?

Alkali Jack

So what happens to the Galactose created from Lactose, is it then converted to Glucose and used?

Compulsive blinking disorder

I searched on Google.com for 'Compulsive blinking disorder' and found only 6 pages. Those pages were all copies of the article. Because I found no other pages on google, I think 'Compulsive blinking disorder' doesn't exist. Luap 6-6-2006

Indeed, it was added by User:198.236.58.30, which vandalized other pages. I removed that part. Wmahan. 02:23, 6 June 2006 (UTC)

i have compulsive blinking disorder. it's very real and my condition is a heavy burden that i will have to bare for th rest of my life. do no laugh at me. it is no laughing matter

"Brain sugar"

Brain sugar? Can we get some sort of reference or link as to why it was called "Brain sugar". Lancepickens 23:33, 2 June 2007 (UTC)

I added a reference. 193.171.121.30 05:27, 5 October 2007 (UTC)

i have compulsive blinking disorder. it is not something to laugh about.

Clinical significance

This section needs revision. The first two articles cited are rather outdated and I believe that the body of research points in the direction of no correlation between galactose metabolism and ovarian cancer. Ibrmrn (talk) 12:36, 27 November 2007 (UTC)

If you Google search galactose health, you can see titles like:

• 3 Servings of Milk a Day Linked to Higher Mortality in Women

- Perhaps I can buy some specific enzyme, mix that enzyme with milk and then, galactose is converted to a sugar that does not have health issues?? First lactose should be converted to galactose and glucose of course, but I do now know of any lactase capsules that claim to do that BEFORE I drink the milk. - Do you know dietary supplements that claim to fix problems caused by galactose? - What about Men? ee1518 (talk) 14:57, 23 December 2014 (UTC)

Part of Section 6 does not make sense

...or does not seem to, anyway. It says "Is the most problematic, as galactose-free diets do not have considerable long-term effects." - rephrase? It Is Me Here (talk) 07:13, 3 March 2008 (UTC)

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Difference in molecular mass compared to glucose

I was surprised to see a difference between the molecular mass of galactose (180,08gr/mol) and that of glucose (180,16gr/mol), while their molecular structure only differs in the placement of the -OH groups. I understand there is a difference in free energy, that could cause a difference in molecular mass, but can a source confirm this? 0,08 gram difference seems a lot, seeing as mannose only has a difference of 0,004 gram difference with glucose. Forgot to sign: Redtails (talk) 11:28, 15 June 2009 (UTC)

This is just an error in the calculations, probably from using different sig figs for the elements. Glucose, galactose, mannose (and the other hexoses) are all isomers with the formula C₆H₁₂O₆, so there is no difference in their molecular weights. The correct mass to four decimal places would be 180.1559 g/mol. I've changed all of these to be consistent. --Glycoform (talk) 16:52, 12 January 2009 (UTC)

Natural form

Looking at the article, I could not work out which form D or L was the naturally occuring one - anyone able to add this (I think it is perhaps a weakness in other of the sugar pages)Skihatboatbike (talk) 20:10, 12 March 2009 (UTC)

D-galactose. Edited. DAVilla (talk) 09:27, 26 November 2015 (UTC)

This first part of this statement makes no sense to me, and the reference is broken.

• In the open-chain form D- and L- isomers cannot be separated, but the cyclic forms can be crystallized and isolated. Ophardt, C. Galactose

The presumably corrected reference does not mention isolation, so I have removed it. DAVilla (talk) 09:36, 26 November 2015 (UTC)

Galactose Metabolism

In the image, the molecule labelled UDP-glucose is actually UDP-allose. Also, process 4 (UDP-glucose isomerase) is wrong. It says that UDP-galactose is being isomerized to UDP-glucose, but the structures are identical. Both are UDP-gulose. In fact, all monosaccharides in this section labelled galactose are actually D-gulose. Perfect5th (talk) 17:17, 17 November 2011 (UTC)

Chemical Formula of Galactose??

I realize this is getting REALLY basic, but most chemistry/ bio chem articles include the chemical formula of the molecule/ compound being discussed. Unless I missed it, I do not see a chem. formula for galactose clearly stated in this article itself. I believe it is worthwhile info for this article to include, esp. considering beginning students of chemistry and biology like myself are probably reading this article as much or more than more advanced students. — Preceding unsigned comment added by Decaturstreet (talk • contribs) 19:23, 9 September 2012 (UTC)

Never mind, I found the molecular formula in the dialog box. Just used to seeing it in the actual article. Decaturstreet (talk)

In humans?

I edited the section "Relation to Lactose" a bit changing the opening from "In human bodies " to "In lactating humans" as most human bodies do not undergo this process. But do other mammals, or placental mammals not all have the same process for making milk?Kurtdriver (talk) 19:59, 8 July 2016 (UTC)

Supplementing with Uridine, would it make dietary Galactose less or more harmful?

Supplementing with Uridine, would it make dietary Galactose less or more harmful?

https://en.wikipedia.org/wiki/Uridine "Uridine plays a role in the glycolysis pathway of galactose".

https://en.wikipedia.org/wiki/Galactose "Chronic systemic exposure of mice, rats, and Drosophila to D-galactose causes the acceleration of senescence (aging) and has been used as an aging model".

ee1518 (talk) 18:54, 14 October 2016 (UTC)