Talk:Xanthone

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xanthones[edit]

I would have to agree that that is suspicious and most likely put up by someone selling the mangosteen juice; however, that statement does have some truth to it. Take a look on PubMed.gov, and you'll find a significant amount of information regarding xanthones. Most of the research articles do involve xanthones extracted from the Garcinia mangostana (mangosteen fruit). ARA 03:30, 8 May 2006 (UTC)

External link[edit]

The external link is an advertisement for products from specific companies and should be deleted.

That seems to be the consensus - the link has been removed at least six times. Edgar181 22:08, 15 November 2005 (UTC)

Juice companies trying to manipulate?[edit]

Hello,

I was trying to look up "Xanthones" and found contradicting information:

At this moment (April 25, 2006) Xanthones are explained in Wikipedia like this (abbreviation of article): "In 1939, xanthone was introduced as an insecticide. Xanthone currently finds uses as ovicide for codling moth eggs and as a larvicide."

But when I search in Google "define Xanthone", then Google refers to the very same page in Wikipedia with this excerpt: "Xanthones, highly active plant phenols found in a limited number of plants, are among the most powerful antioxidants known to science. Scientific research has found over 40 out of 210 known xanthones in the pericarp of the mangosteen fruit. What's remarkable is that it's not just the inner flesh of the mangosteen, but the whole fruit, that represents the single greatest known supply of these tremendously beneficial xanthones found anywhere in nature."

Google probably has this information from their cache, so the change must have happened recently. Clicking the link provided by Google refers to the above page with the insecticide informatin.

Of course, both informations could be correct. But the latter is definitely suspicious of being added by the makers of mangosteen juice who advertise their product with its richness of Xanthones.

Could someone knowledgeable please verify?

Thank you.

MalEbenSo 17:26, 25 April 2006 (UTC)

This Article is not Written Very Well[edit]

The most recent writer of this article was not paying too close attention to his writing. This author uses choppy sentences. Like these ones. Do you find this annoying? I certainly do. Also, several words are used that are not English words, and are linked to other articles which do not exist. These words are: anti-radicals, anti-oxygenes, anti-cancerogenes. The author refers to aging as a disease, which I find unacceptable: how is a natual process a "disease"?

I would also remove the second External Link "Links to external chemical sources." This article has absolutely NOTHING to do with Xanthones, and as such does not help to enhance the readers' understanding of the article.

I have seen articles like this before, when a promoter of a product uses their own literature to write about their product. Oftentimes, they cut and paste large portions of text. They credit whatever their source cites, in an attempt to look credible. Reading these articles makes me sick. Impartiality, veracity, and credibility are the foundations of any encyclopedic text. dm01 23:19, 19 December 2006 (UTC)

The addition has been done some time ago. Apparently noone within the chemistry/chemicals projects has had time to put enough time in it to rewrite. But feel free to rewrite, there are many articles which need some help, and there is only so much editors can do.
About the link to chemicalsources. The pages provided there can help you find more information about xanthone, and it gives a control on linkspam on the pages themselves (regarding bias towards external links, to suppliers or government funded pages; the page is meant to turn into a meta-page, later, see this test-site. Hope this clarifies a bit. --Dirk Beetstra T C 23:26, 19 December 2006 (UTC)

UV Absorber[edit]

During the late 1970s and early 1980s, Imperial Chemical Industries plc was conducting extensive research on the UV absorbtion properties of Xanthone. Tetra-hydroxy Xanthone was polymerised into polyester and typically increased the lifespan of the polyester film from 3 years to 10 years. The synthesis process was refined to greatly reduce the overall cost of the additive and given that the third generation of solar cells are now being printed directly onto plastic film, the additive could significantly increase the typical life-span of such cells. {Nigelpwsmith (talk) 12:50, 9 January 2008 (UTC)}

Removed from article[edit]

I have removed "There is a rising interest in a number of these xanthones as numerous of them are among the strongest anti-radicals and anti-oxigenes, anti-aging and related diseases, anti-cancerogenes" from the article. It not only uses unscientific words, but it is also uncited, and probably an exaggeration. If true it can be added back in with appropriate citation. Deli nk 19:57, 13 February 2007 (UTC)

St John's Wort[edit]

You guys, I read that Xanthone is the active ingredient in St. John's Wort, which is a herbal remedy for treating depression. Maybe someone can verify this and add it to the article? Just a thought. —Preceding unsigned comment added by 193.138.86.250 (talk) 11:50, 20 November 2008 (UTC)

The major active antidepressive constituents in St John's wort are thought to be hyperforin and hypericin, not xanthone. -- Ed (Edgar181) 14:32, 20 November 2008 (UTC)

Possible copyright problem[edit]

This article has been revised as part of a large-scale clean-up project of multiple article copyright infringement. (See the investigation subpage) Earlier text must not be restored, unless it can be verified to be free of infringement. For legal reasons, Wikipedia cannot accept copyrighted text or images borrowed from other web sites or printed material; such additions must be deleted. Contributors may use sources as a source of information, but not as a source of sentences or phrases. Accordingly, the material may be rewritten, but only if it does not infringe on the copyright of the original or plagiarize from that source. Please see our guideline on non-free text for how to properly implement limited quotations of copyrighted text. Wikipedia takes copyright violations very seriously. Diannaa (talk) 20:48, 20 January 2014 (UTC)