Talk:Chitosan

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Product Claims[edit]

Is it just me, or does the section cited by reference 17 reads like an advertisement? The only reference given is a whitepaper from the manufacturer's website. Removing it for now, until it can be rewritten with more encyclopedic language. --Revaaron (talk) 16:36, 3 July 2009 (UTC)

The text was reinserted and cited with correct reference article. --Agrihouse (talk) 20:46, 13 July 2009 (UTC)

This entry reads less as a wikipedia entry, and more as a ad for the industry. —Preceding unsigned comment added by 132.79.9.15 (talk) 20:23, 21 April 2011 (UTC)

Agricultural Uses of Chitosan[edit]

Elicitation of Natural Defenses Response in Plants: AgriHouse Inc (Denver, Colorado) has completed over 20 years of agricultural research on chitosan in conjunction with Dr. James Linden, Professor Emeritus, Departments of Chemical and Biological Engineering and of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado and Dr. Ken Knutson, Professor Emeritus, Plant Pathologist, Director Seed Potato Certification, Colorado State University, Fort Collins, Colorado. Richard Stoner, Founder and Pres., is a co-inventor, hold patents and pending patents on the defense elicitation of plants using chitin / chitosan.

DuPont-ConAgra Venture (DCV), Wilmington DE, was granted patents for spraying chitosan on the leaves of plants to elicit natural defense responses by the plants against pathogens and pesticides. AgriHouse has been assigned the DCV patents in 2009.

The EPA and USDA regulate the use of Chitosan on agricultural crops. Chitosan is known to elicit natural disease responses and boost growth in plant and trees. see YouTube video [1]

In September of 2008 AgriHouse Inc was granted EPA registration (EPA reg. no. 83729-1) for YEA!® Yield Enhancing Agent, containing an active ingredient of 0.25% chitosan and 99.75% inert materials.trytuiuiuiuiui The following articles have been written by inventors:

Linden, J., Stoner, R., Knutson, K. Gardner-Hughes, C. “Organic Disease Control Elicitors”. Agro Food Industry Hi-Te (p12-15 Oct 2000)

Linden, J.C. and Stoner R.J. 2005. Proprietary Elicitor Amends Potato Emergence and Yields. Potato Grower. April. pp. 34-35.

Linden, J.C. and Stoner, R.J. 2005. Proprietary Elicitor Affects Seed Germination and Delays Fruit Senescence. Journal of Food, Agriculture & Environment (in press).

Stoner, R., Progressive Plant Growing Has Business Blooming, Environmental and Agricultural Resources NASA Spinoff 2006, pp68-71.

Linden, J.C. and Stoner, R.J. 2007. Pre-harvest application of proprietary elicitor delays fruit senescence. A. Ramina et al. (eds.). Advances in Plant Ethylene Research: Proceedings of the 7th International Symposium on the Plant Hormone Ethylene. pp 301-302. Springer: Dordrecht, The Netherlands.

These articles and field trials with chitosan elicitors can found at http://www.yeacrops.com


--71.208.51.86 (talk) 18:27, 10 April 2009 (UTC)

--71.208.51.86 (talk) 17:19, 10 April 2009 (UTC)

Chitosan has been reported in the New York Times, Oct 3. 2007 to be a stressor that can illicit an increase in the devensive response of some plants. Namely, the production of antioxidants and 'aroma compounds' related to flavor. They site a study of basil stressed by being soaked in the compound by Clemson University professors Dr. Hyn-Jin Kim and Feng Chen.

NYT October 3, 3007 Organic, and Tastier: The Rat's Nose Knows [2] RRphys 15:10, 3 October 2007 (UTC)

Weight loss[edit]

Personal experiance? It does remove the fat, but you have to drink lots of water. Eathing grasy foods while you take it is BAD. Be prepared for a long stay in the bathroom. If I find articles on the side effects I'll put a link in. It works, it just anit no magic bullet. Lyta79 (talk) 18:02, 19 December 2009 (UTC)


Chitosan really help to lose weight to some, by diminishing appetite. It probably doesn't work the way it is advertised, but it's "working". Based on my personnal experience and "feelings", it works by binding to heavy metals (mercury, lead).

While a possible reduction in fat absorption might in some cases cause someone to subtly feel a bit different, that is by no means a determining factor. Secondly, one rarely consumes any heavy metals in one's diet, but are you saying that chitosan is a chelating/detoxifying agent? I haven't come across that claim elsewhere. --Amit 16:02, 19 July 2006 (UTC)
Well I have, Mercola website cites tree studies showing Chitosan removes mercury from the gut(like Chlorella). I would like to see more information on that, does anyone have other sources(Tradingbr 12:41, 14 October 2006 (UTC))
@Amit: Yes, I heard before that chitosan is used as detoxifying agent. It is used in water filters, to filter out certain heavy metals. effeietsanders 07:43, 16 October 2006 (UTC)
Hi, could you provide a link for that?(Tradingbr 12:49, 17 October 2006 (UTC))
Hmmm, I made a report about this stuff some time ago. It should be somewhere in one of these links I guess...
Whether or not your "feelings" lead you to believe that chitosan suppresses appetite by way of "binding to heavy metals" is immaterial. Your own subjective "feelings" on the matter don't provide any sort of empirical support for the idea that chitosan promotes weight loss, acts as an appetite suppressant, or binds to heavy metals. Chitosan may do all or some of these, but whether or not you believe it to be so isn't a valid basis for providing claims to that effect in an encyclopedia. References to peer reviewed research would. --Revaaron (talk) 16:36, 3 July 2009 (UTC)

125.163.100.242 11:41, 10 August 2007 (UTC)*[11] http://biotech.co.id At least this website tells about it: [3]. I know it is not much, but the scientist who helped me with this project told it was reasonable, and it had probably something to do with the helix-shape it could be trapped in. effeietsanders 11:24, 30 October 2006 (UTC)

Clarifying agent[edit]

Chitosan is often used in conjunction with Bentonite as a clarifying agent in wine making to remove unwanted cloudiness and hazes in the finished product. Kitsune818 13:44, 30 May 2006 (UTC)

Unreferenced claim[edit]

Chiosan will also increase the bioavailability of morphine.

Bioavailability of Morphine: Oral: ~30% Insufflated: 10-20%

Here's the VERY interesting part: Chitosan [a linear polysaccharide that helps absorb drugs better] has been shown to increase nasal bioavailability of morphine from around 10-20% to over 60%

Going from 20% TOPS, to over 60% for insufflation methods of ingestion.




here are the references (i wrote about in my diploma thesis):

Illum, L., P. Watts, et al. (2002). "Intranasal delivery of morphine." Journal of Pharmacology and Experimental Therapeutics 301(1): 391-400.


Pavis, H., A. Wilcock, et al. (2002). "Pilot study of nasal morphine-chitosan for the relief of breakthrough pain in patients with cancer." Journal of Pain and Symptom Management 24(6): 598-602.


best regards 130.208.188.119 01:16, 4 June 2007 (UTC)

History of chitosan[edit]

If anyone can provide information on history it wold be interesting. E.g.:

  • when first isolated, when named, ...by whom
      The earliest reference I can find to Chitosan was the isolation from fungal cell walls by Henri Braconnot in 1811 who named it fungine. It was later isolated from the exoskeleton of crustacea by C. Odier in 1823 who named it chitin. Tom Kean 23:25, 8 November 2010 (UTC)  —Preceding unsigned comment added by Keantom (talkcontribs)  
  • when first used for specific applictions (...by whom)

—DIV (128.250.80.15 (talk) 07:33, 28 December 2007 (UTC))

There is a reference to chitin in 1892

Amyloid substance. Krawkow, N. P. Centr. Med., Wiss. (1892), 145-48. From: J. Chem. Soc., Abstr. 64, I, 288 1893

and to both chitin and chitosan in 1894

Chitin and cellulose. Hoppe-Seyler, F. Berichte der Deutschen Chemischen Gesellschaft (1894), 27 3329-31. From: J. Chem. Soc., Abstr. 68, I, 166-7 1895

Source: SciFinder Scholar 2006, ACS
I am certain these are not the earliest references. —DIV (128.250.80.15 (talk) 07:43, 28 December 2007 (UTC))

Clarify[edit]

If you can, please clarify whether chitosan is ever found in nature, or if ALL chitosan is derived from chitin. ike9898 (talk) 15:15, 25 August 2010 (UTC)

SAFETY[edit]

Maybe it can be claimed that chitosan doesn't bien important minerales, but it can't be claimed that "there is no proof of any adverse events, in particular regarding nutrient absorption, in humans" as long as it binds fat, and there are vitamins that ARE fat like vitamin E or vitamin D — Preceding unsigned comment added by 193.144.79.183 (talk) 13:49, 24 January 2012 (UTC)

Infomercial?[edit]

As a biologist who's looking for factual information about chitosan, this article reads in a very unbalanced way. In fact, it reads almost like an advertisement for a product from two people whose patent applications are cited repeatedly in this article. It would be a very good idea for a biologist or biochemist with specialist knowledge of this area to edit the page thoroughly and for claims of biological and agricultural activity to be presented in a more balanced manner. OldSpot61 (talk) 10:18, 5 December 2012 (UTC)

Perhaps apply at the Task Force for someone like that to take a look? Guess you mean Linden/Stoner; have merged 2 refs (2007). To be fair, there are over 40 refs to other people's papers; perhaps L&S are just good active researchers in this field. Does need an expert to assess. Chiswick Chap (talk) 10:47, 5 December 2012 (UTC)