Human Anatomy, Physiology, and Medicine. Anything human!
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I would very much like to hear the chemical reaction taking place to produce this result:
The best i could find so far as a laymen is the flocculation that takes place as with coca cola. Is there a place in the biology forum where we can discuss the chemical reactions taking place? It shouldn't be hard to moderate since the discussion can only revolve around red wine, peroxide, saliva, tooth enamel and the inner lining of the mouth.
Ive tried the red wine spit test and produced what you see in that link. All i need now is a "normal", scientific explanation for what i am seeing.
Thanks in advance,
The microscopic images don't have enough resolution to really "see" anything.
I would lean toward unconscious retention as the generating process here - holding the test substances longer. Is there a set time for the test?
I don't know the time lapse shown on Carnicom's website. My question is more basic and doesn't require observing the spittle under a microscope. I simply would like to know how this resulting "gooey mass" is produced, in terms of chemical reaction. Even without peroxide, although yielding less, I can spit out what looks to me like wet chewing tobacco(for lack of a better description). What in red wine(merlot works best) reacts inside the mouth/saliva to produce sticky strands?
Oh, and for me personally, there is no time lapse. I rinse for a few minutes and spit. The macroscopic observation is the same as shown on Carnicom's website.
@Darby: unconscious retention as the generating process....cute.
Here is something I found regarding antioxidants and redwine:
"only a small fraction of the antioxidants (12.2 ± 3.4 %) is precipitated when wine samples are shaken for a few minutes with non-stimulated human saliva (5:1, V:V). This last result implies that most of the polyphenols present in the red wine samples are able to surpass the barrier imposed by the saliva."
http://www.scielo.cl/scielo.php?pid=S07 ... ci_arttext
"most polyphenols" means not all polyphenols "...are able to surpass the barrier imposed by saliva". So which polyphenols are responsible for the precipitation and formation that can be seen here:
Are there any biochemists that frequent this board?
Interactions between saliva and wine
From the table above we see that wine only contains about 0.1% tannins (also known as polyphenols). The sources of tannins found in red wine are the seeds, skin and stem of the grapes. When we drink red wine, the tannins react with proteins in our saliva to form water insoluble protein-tannin complexes. A precipitate is formed and as a result, the lubricating properties of the saliva are lost and our tongue feels rough and dry. In other words, we experience the astringency of the red wine.
What i don't get is this: The precipitate in the photo doesnt even look remotely close to the dark stringy mass I produce with or without the peroxide. So if tannin creates the precipitate shown in the link above we can rule it out. So far scientific?
7 posts • Page 1 of 1
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