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What is ethoxyquin used for?

Author

Mia Ramsey

Published Mar 08, 2026

What is ethoxyquin used for?

Ethoxyquin (EMQ) is a quinoline-based antioxidant used as a food preservative in certain countries and originally to control scald on pears after harvest (under commercial names such as "Stop-Scald"). It is used as a preservative in some pet foods to slow the development of rancidity of fats.

Herein, what is ethoxyquin human food?

Ethoxyquin is a synthetic antioxidant that is included in some animal and human foods as a preservative to protect fats and fat-soluble vitamins from oxidative degradation (see Section 3, pp. Rancid fat is offensive in odor and flavor and includes compounds that are toxic when consumed.

Secondly, does Blue Buffalo contain ethoxyquin? Per Diamond Pet Food (manufacturer) “all fish meal, ocean fish meal, and salmon meal ingredients are preserved with ethoxyquin.” However, because it is found in the food chain, trace amounts cannot easily be eliminated.” Blue Buffalo Pet Foods. “Fish meal is preserved naturally with Naturox.”

Just so, why are antioxidants used in fish diets?

Antioxidants prevent oxidative losses of vitamins A and E and pigmenters (oxy- and keto-cerotenoids) in stored mixed feeds. Antioxidants stabilize critical oxidation-susceptible nutrients that are naturally present in a fish feed composed of several feedstuffs so that losses are minimal from mixing and storing.

What is BHT used for?

BHT (butylated hydroxytoluene) is a lab-made chemical that is added to foods as a preservative. People also use it as medicine. BHT is used to treat genital herpes and acquired immunodeficiency syndrome (AIDS). Some people apply BHT directly to the skin for cold sores.

What dog foods should I avoid?

These Are The Ingredients You Should Always Avoid In Your Dog Food
  • Avoid Dog Food With “Meal” Rendered Products.
  • Avoid Artificial Preservatives And Coloring.
  • Avoid Propylene Glycol.
  • Avoid Too Much Corn And Rice.
  • Beware Grain-Free Dog Food.

What is ethoxyquin in dog food?

Ethoxyquin is an approved food additive that helps prevent rancidity of fats and degradation of fat-soluble vitamins in animal feeds. As a very effective antioxidant preservative, it was used without apparent safety concerns for decades until reports of adverse effects were received from dog owners.

What are the antioxidants used to prevent rancidity?

Antioxidants are often used as preservatives in fat-containing foods to delay the onset or slow the development of rancidity due to oxidation. Natural antioxidants include ascorbic acid (vitamin C) and tocopherols (vitamin E).

Does fish have antioxidants?

Plant foods are rich sources of antioxidants. They are most abundant in fruits and vegetables, as well as other foods including nuts, wholegrains and some meats, poultry and fish.
Historically, antioxidants have been added to commercial feeds to prevent lipid peroxidation and oxidative rancidity during production, processing and storage of feeds.

Why is BHT bad for you?

Health and Environmental Hazards

Long-term exposure to high doses of BHT is toxic in mice and rats, causing liver, thyroid and kidney problems and affecting lung function and blood coagulation [4]. BHT can act as a tumour promoter in certain situations [5].

Is BHT safe on skin?

BHT does penetrate the skin, but the relatively low amount absorbed remains primarily in the skin. In addition to liver and kidney effects, BHT applied to the skin was associated with toxic effects in lung tissue. BHT was not a reproductive or developmental toxin in animals.

Is BHT safe for hair?

BHA (butylated hydroxyanisole) and BHT (butylated hydroxytoluene) are common preservatives. “Not only are they potential skin allergens, the International Agency for Research on Cancer has classified BHA as a possible human carcinogen,” Lee says.

What food has BHT?

BHT is in cosmetics like lip glosses and lotions, personal care items, as well as food items like preserved meats or chips, edible fats, dehydrated foods, baked goods, snack foods, chewing gum, animal feed, and foods that contain fats as well as flavoring products [1] [3].

What is BHT in shampoo?

Butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA) are closely related chemicals that are commonly used as preservatives. These can be found in many personal care products including lip and hair products, makeup, sunscreen, shampoos, deodorants, fragrance, and creams.

Is BHT natural?

Interestingly, a compound with particular interest is detected; the Butylated Hydroxytoluene (BHT) is naturally emitted by 11 strains from the 14 isolated fungi at levels ranging between 0.3 and 13.1% (for Aspergillus conicus).

Is BHT an endocrine disruptor?

BHT is accused of being an endocrine disruptor and of having toxic effects on the liver, kidneys and lungs at extreme doses, by ingestion. BHT is also suspected of having a potential for bioaccumulation in aquatic species.

How does BHT antioxidant work?

The species behaves as a synthetic analog of vitamin E, primarily acting as a terminating agent that suppresses autoxidation, a process whereby unsaturated (usually) organic compounds are attacked by atmospheric oxygen. BHT stops this autocatalytic reaction by converting peroxy radicals to hydroperoxides.

Is BHA a carcinogen?

The FDA considers the preservative butylated hydroxyanisole (BHA) to be a GRAS additive – even though the National Toxicology Program classifies it as “reasonably anticipated to be a human carcinogen,” the international cancer agency categorizes it as a possible human carcinogen, and it's listed as a known carcinogen

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What is ethoxyquin used for?