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Author Topic: Carrageenan in many high end cat food  (Read 6801 times)
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kaffe
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« on: February 26, 2008, 12:06:46 PM »

Carrageenan is a gum extracted from red seaweed and is a thickener used in many wet petfood – even the so-called “healthy” brands.  In well-documented studies, carrageenan has been shown to cause colitis, ulcers, cancer and other GI problems in animals.  In rats, it caused cancer:


"Rats fed degraded carrageenan have been shown to develop colorectal tumors (2). Studies involving initiation with the genotoxic carcinogen azoxymethane, followed by quantitation of the number of aberrant intestinal crypts formed in response to subsequent carrageenan exposure, have also suggested that degraded carageenan has the potential to promote colon cancer in rats." [Corpet DE, Taché S, Préclaire M. Carrageenan given as a jelly, does not initiate, but promotes the growth of aberrant crypt foci in the rat colon. Cancer Lett 114:53-55 (1997).]


 In monkeys, it caused many GI upsets:

"When the Food and Drug Administration (FDA) considered the status of carrageenan in the early 1970s, their review included a study of 24 rhesus monkeys with appropriate controls (4,5). Investigators observed that monkeys fed 2% degraded carrageenan did not gain weight, had an immediate change in stool consistency, and consistently had blood in their stools, which was associated with a decline in hemoglobin, until approximately 10 weeks after the withdrawal of the carrageenan. In addition, they developed mucosal erosions and ulceration and multiple crypt abscesses. Pathologic changes were dose and duration dependent. Thus, these data indicate that degraded carrageenan can induce colitis in primates." [Carrageenan in Foods: Response]


The article/review can be read in full here:

http://www.ehponline.org/docs/2002/110-4/correspondence.html

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GoingNUTZoverthis
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« Reply #1 on: February 26, 2008, 12:10:15 PM »

I believe the GI upset when my girls were on one of the high end foods right after the recall started they both started needing PEPCID. 

At this point they get no wet food.
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kaffe
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« Reply #2 on: February 26, 2008, 12:15:44 PM »

Some catfood brands with carrageenan:

1.  Merricks
2.  Propac
3.  Natural Balance
4.  Evo
5.  Wellness
6.  Felidae
7.  Evangers
« Last Edit: February 26, 2008, 05:41:03 PM by kaffe » Logged
petslave
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« Reply #3 on: February 26, 2008, 12:55:41 PM »

The use of guar gum in the canned foods bothers me too.  There are a few threads from last year where we were discussing the pros & cons of each.  I would rather they not put either in there, but I guess it would be soup otherwise.   Wellness has both, but I think Felidae just uses guar gum. 

Another reason to home cook or feed raw if possible.
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Mandycat
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« Reply #4 on: February 26, 2008, 01:02:48 PM »

The following quote is from the Wikipedia site on Carrageenan.  Particularly note the distinction between "carrageenan" and "degraded carrageenan" (which is actually known as Poligeenan).  The study kaffe referred to used degraded carrageenan. 

       "There is evidence from studies performed on rats, guinea pigs and monkeys which indicates that degraded carrageenan (poligeenan) may cause ulcerations in the gastro-intestinal tract and gastro-intestinal cancer.[12] Poligeenan is produced from carrageenan subjected to high temperatures and acidity. The average carrageenan molecule weighs over 100,000 Da while poligeenans have a molecular weight of less than 50,000 Da. A scientific committee working on behalf of the European Commission has recommended that the amount of degraded carrageenan be limited to a maximum of 5% (which is the limit of detection) of total carrageenan mass. Upon testing samples of foods containing high molecular weight carrageens, researchers found no poligeenan.[13"

There is more information on the safety of Carrageenan at this site that contains info published later than the studies previously referred to.

            www.carrageenan.info


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catwoods
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« Reply #5 on: February 26, 2008, 02:12:09 PM »

Carrageenan is also used as a thickener in many human foods - soups, ice creams, etc. It can be difficult to avoid.
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mainecoonpeg
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« Reply #6 on: February 26, 2008, 02:21:53 PM »

I had contacted Wellness about their use of carageenan and they told me they use "food grade" and the amount is miniscule.  I also contacted Evangers about their use of carageenan in some of their cat foods and they too said it is food grade vs. degraded, also added in miniscule amounts.  I'm not exactly thrilled with it either, but according to these 2 manufacturers, it is added to give some structure/thickening to the food.

Funny thing is though, other companies don't use it.  I think I'd rather see carageenan than guar....as much more guar is required.

Weird too is the use of carageenan in heavy cream.  Isn't that stuff thick enough??
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kaffe
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« Reply #7 on: February 26, 2008, 03:47:13 PM »

There is a more recent study (published Aug 2006) links carageenan with inflammatory bowel disease in humans:

http://ajpgi.physiology.org/cgi/content/full/292/3/G829

The Abstract:

Submitted 15 August 2006 ; accepted in final form 2 November 2006
Carrageenan is a high molecular weight sulfated polygalactan used to improve the texture of commercial food products. Its use increased markedly during the last half century, although carrageenan is known to induce inflammation in rheumatological models and in intestinal models of colitis. We performed studies to determine its direct effects on human intestinal cells, including normal human intestinal epithelial cells from colonic surgeries, the normal intestinal epithelial cell line NCM460, and normal rat ileal epithelial cells. Cells were treated with high molecular weight  -carrageenan at a concentration of 1 µg/ml for 1–96 h. IL-8, IL-8 promoter activity, total and nuclear NF- B, I B , phospho-I B , and Bcl10 were assessed by immunohistochemistry, Western blot, ELISA, and cDNA microarray. Increased Bcl10, nuclear and cytoplasmic NF- B, IL-8 promoter activation, and IL-8 secretion were detected following carrageenan exposure. Knockdown of Bcl10 by siRNA markedly reduced the increase in IL-8 that followed carrageenan exposure in the NCM460 cells. These results show, for the first time, that exposure of human intestinal epithelial cells to carrageenan triggers a distinct inflammatory pathway via activation of Bcl10 with NF- B activation and upregulation of IL-8 secretion. Since Bcl10 contains a caspase-recruitment domain, similar to that found in NOD2/CARD15 and associated with genetic predisposition to Crohn's disease, the study findings may represent a link between genetic and environmental etiologies of inflammatory bowel disease. Because of the high use of carrageenan as a food additive in the diet, the findings may have clinical significance.
inflammation; colon; NF- B; I B


 
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Laurie
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« Reply #8 on: February 26, 2008, 04:17:25 PM »

  Found the thread where both carageenan and guar gum was discussed here last year.  db and petslave both posted some very interesting links.  http://itchmoforums.com/your-problems-with-pet-food/natural-balance-venison-and-pea-canned-cat-food-t879.60.html
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kaffe
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« Reply #9 on: February 26, 2008, 04:54:05 PM »

Wow, Laurie!  Thanks for digging that discussion up - I somehow missed that! 
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SandyBeach
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« Reply #10 on: February 26, 2008, 05:03:21 PM »

I have had to avoid it and look for it for years...due to y dogs allergies to Kelp...in many ways his allergies have saved him from a lot of crap like CORN  and such

You would be shocked at HOW many foods have this crap in it
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dingbat
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« Reply #11 on: February 26, 2008, 05:22:29 PM »

Quote
An extract is not the same as the whole food...once again we see the reductionist approach to nutrition that food scientists use.

klondike

this was made apparent to us some years ago when our herbalist explained many things to us. The natural plant has many buffers in it to counteract the nasty effects of things. a really crazy example is the coca leaf, the natives there chewed these things for 100's of years with no real ill side effects, but that same leaf processed into cocaine is deadly. same for ephedrine, the natural leaf is fine the refined form not good.

seaweed is a really great food, loaded with all kinds of good stuff, but if you extract the gum part and just eat that the other stuff isn't there to balance it out.

maybe time to change the way the scientists do things

db
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I used to think that anyone doing anything weird was weird. I suddenly realized that anyone doing anything weird wasn't weird at all and it was the people saying they were weird that were weird.
JustMe
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« Reply #12 on: February 27, 2008, 06:56:15 AM »

I'm copying this from Petslave's post in the new Scientists thread.


I don't know about the amounts of carragenan in the canned foods, but when I was feeding Felidae last year, the amount of guar gum in there was impressive.  They had a few runs of food where the GG didn't get mixed in correctly, so it was in large chunks in each can, maybe 2-3 that were half to three quarter inch in diameter & more smaller chunks.  I think they got the problem straightened out, but that showed me how much is added to their formulas. 
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Eventually they will understand,
Replied the glorious cat
For I will whisper into their hearts
That I am always with them
I just am....forever and ever and ever.
Poem for Cats, author unknown

"A kitten in the animal kingdom is like a rosebud in a garden", author unknown
JustMe
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« Reply #13 on: February 27, 2008, 06:59:24 AM »

The ensuing discussion of scientists has been moved here.

http://itchmoforums.com/off-topic/scientists-t3732.0.html

Any further posts to this thread that are off the topic of carrageenan will automatically be deleted (not moved) from this thread.

Take your discussion of scientists to the split-off thread.
« Last Edit: February 27, 2008, 07:03:05 AM by JustMe » Logged

Eventually they will understand,
Replied the glorious cat
For I will whisper into their hearts
That I am always with them
I just am....forever and ever and ever.
Poem for Cats, author unknown

"A kitten in the animal kingdom is like a rosebud in a garden", author unknown
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