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Diacetyl in Pet Food Flavorings?

Now it makes sense as to why pet food manufacturers won’t tell petsumers what ingredients are included in pet food flavorings. New information provided to TruthaboutPetFood.com tells us the chemical diacetyl is a common flavor additive in many pet food ingredients. Diacetyl is the flavor additive linked to ‘popcorn lung’; commonly used in microwave popcorn.

Now it makes sense as to why pet food manufacturers won’t tell petsumers what ingredients are included in pet food flavorings.  New information provided to TruthaboutPetFood.com tells us the chemical diacetyl is a common flavor additive in many pet food ingredients.  Diacetyl is the flavor additive linked to ‘popcorn lung’; commonly used in microwave popcorn.

We have asked pet food manufacturers many times…’What is in your natural flavor ingredient?’  And they have told us repeatedly, ‘this is proprietary information’.

Now we have a clue to one ingredient that makes up pet food’s flavor ingredient – diacetyl.   In addition to inside information provided to TruthaboutPetFood.com, a Google search for “diacetyl pet food” provides more than 1,000 patent processes for pet foods using diacetyl as a flavor additive.   A Google web search for the same term “diacetyl pet food” provides more than 150,000 links mentioning diacetyl and its use in pet food.

The U.S. Department of Labor Occupational Safety & Health Administration (OSHA) says “Diacetyl (also called butanedione or 2,3-butanedione, molecular formula C4H6O2) is a natural byproduct of fermentation and is also synthesized by chemical manufacturers.  Diacetyl gives butter and certain food flavorings a distinctive buttery flavor and aroma.  Food flavorings containing diacetyl are used in microwave popcorn and other snack foods, pet foods, candies, baked goods, and other food products.”  Under Health Effects the OSHA website continues with “Manufacturers and importers of hazardous chemicals must consider the available human and animal data when determining hazards and should convey that information on the MSDS ( 29 CFR 1910.1200(d)(2) and Appendix B of the HCS). Many current MSDSs do not reflect any new information regarding health effects and respiratory hazards associated with diacetyl or FFCD. Specifically, chemical manufacturers and importers must convey information that animals exposed to diacetyl experienced damage to the nose and upper airways, including severe damage to cells lining the respiratory tract.”

Indiana based Sensient Flavors LLC is a supplier of flavor ingredients to pet food.  The Indiana OSHA Board found Sensient Flavors to have serious violations in relation to diacetyl; exposing employees to very high levels of the chemical.  The OSHA investigation resulted in a lawsuit which was settled in 2012 with smaller fines and Sensient agreeing to reduce its usage of diacetyl.

Is diacetyl in pet food flavor ingredients a risk to our pets?  We do not know for certain.  The major known risk of diacetyl is through inhalation (found a serious health risk to humans and animals).  However, to my knowledge there is no research showing pets could inhale diacetyl in the pet food and there is no research (to my knowledge) the chemical could be a concern when ingested.

What we do know is that factory workers exposed to/inhaling diacetyl are at great risk for lung disease.  We know that animal tests of inhaled diacetyl have produced the same results – lung disease.  And we know that flavor additives (including those with diacetyl) are sprayed on kibble as the last processing step, allowing the flavor to be easily inhaled by the pet.  Considering a pet could be exposed to diacetyl with each meal every day, what is unknown is concerning.

Again, if the ‘natural flavor’ ingredient in many pet foods contain diacetyl, it is pure speculation if the flavor becomes a risk.  But why take the chance?  Unlike humans with sporadic exposure, pets could be inhaling/ingesting low levels of diacetyl at every meal, resulting in health concerns after years of exposure.  I publically ask all pet food manufacturers to closely inspect the ingredients of your pet food flavor – if it contains diacetyl, find a new flavor.  Please put pet safety (and by the way the safety of your employees handling the flavor ingredient) first.

To read more about diacetyl, Click Here to read information from the Federal Register.

 

Wishing you and your pet(s) the best,

Susan Thixton
TruthaboutPetFood.com
Association for Truth in Pet Food
Pet Food Safety Advocate
Author Buyer Beware, Co-Author Dinner PAWsible

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6 Comments

6 Comments

  1. Allison

    May 31, 2013 at 7:36 pm

    This is very interesting and thank you for posting! It does really concern me for cats with previous URI and pet rats as many rat owners will feed them dog food. Rats in particular have very sensitive respiratory systems. With this new information (and the recent buyout of Natural Balance) I will be making my own rat food too from now on. Just another reason not to feed kibble!!

  2. Mollie Morrissette

    May 31, 2013 at 11:26 pm

    Actually, back in 2007 the NYT reported on a consumer unaffiliated with occupational diacetyl exposure may have developed bronchiolitis obliterations as a result of heavy popcorn consumption. Although it is not a definitive causal link, after discovering that measurements of diacetyl in the man’s home were similar to levels in microwave popcorn plants, it is difficult not to derive the conclusion. Read more about it: The New York Times. 2007. “Doctor Links a Man’s Illness to a Microwave Popcorn Habit”

    • Prince

      June 4, 2013 at 12:13 pm

      Actually, lung damage is not said to be caused by consumption of Diacetyl. It clearly states, “When he broke open the bags, after the steam came out, he would often inhale the fragrance because he liked it so much,” Dr. Rose said. “That’s heated diacetyl, which we know from the workers’ studies is the highest risk.”
      http://www.nytimes.com/2007/09/05/us/05popcorn.html?_r=0

      see also

      “He may be the first person outside the realm of the flavoring and snack-food industry to develop so-called popcorn lung”.
      http://www.medpagetoday.com/Pulmonology/Pneumonia/6589

  3. Karen Ray

    June 4, 2013 at 5:39 pm

    Natural Balance Indoor Cat Formula canned food has recently had “natural flavor” added to its ingredients list. (Whether that’s related to the merger with Del Monte, I don’t know.)

  4. Georgia Picton

    February 6, 2014 at 3:06 am

    According to my knowledge there is no study showing pets could inhale diacetyl in the pet food and there is no study the chemical could be a harmful when it ingested in pet food.

  5. Reva

    January 16, 2019 at 3:50 pm

    Oops, I’m late to the party! Well, here’s the thing: while there may not have been any “study” done about the harmful effects when a pet ingests this in his/her food… to me, doesn’t matter. I know our best dog in the world (current one) has exponential BREATHING PROBLEMS ~ let’s call it full blown asthma… after he’s had a few daily “treats” which supposedly have nothing BUT MEAT and “natural flavor”!!

    So I KNEW there had to be something to this! And of course started wondering what EXACTLY constitutes natural flavor!! Thank you soooo much, Susan!! Gonna’ be difficult to change his routine – no more store bought treats but his health is well worth it!! Just that I have to find (or make) time to make him batches of home cooked treats.

    BTW, for those interested, for HUMAN products when you see the world natural flavor — I’m not making this up, please hit a search engine! It can often be the squeezings from a beaver butt!!! Who in their right mind could make up such stuff? Or who’d want to eat that??!! Most people do every day!

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