Pet foods are added with antioxidants to
preserve ingredients in food stable longer and preserve from oxidation.
Antioxidants are substances that help to keep fats and fat-soluble ingredients
(including vitamins A and E) from becoming oxidized.
Once a fat is oxidized, it starts to taste rancid and loses
much of its nutritional value. Pet foods for dogs or cats, which often contain
significant levels of fat, are especially susceptible to oxidation. Canned
foods are protected because they are airtight, but dry foods need to have
antioxidants added to preserve them. The fact that antioxidant is used as a
preservative in pet food.
Antioxidant consist of natural antioxidant and artificial antioxidant that work to preserve food from oxidation. The most common artificial antioxidants used in the pet food industry are ethoxyquin, butylated hydroxytoluene (BHT), and butylated hydroxyanisole (BHA). Artificial preservatives definitely keep ingredients stable longer and give a longer shelf life than natural antioxidants. Pets owner have had concerns over the safety of artificial preservatives in pet food such as in cases ethoxyquin which has been approved for use in animal feeds for over 30 years was related to the development of medical problems in their dogs, including allergic reactions, skin disease, organ failure, cancer, and behavior problems. However, the results from this study of ethoxyquin showed that ethoxyquin levels above the current amounts allowed in dog foods produced no reproductive abnormalities. The only adverse effects noted were mild increases in the blood levels of certain liver enzymes and an increase in the levels of a normally-occurring red blood cell metabolite. BHT and BHA are synthetic analogues of vitamin E and are often used together.
Commonly used natural antioxidants include tocopherols are a common source of vitamin E, ascorbic acid(vitamin C ) is provided by ingredients such as cranberries, blueberries, apples, and some other fruits,citric acid is also found in many of these especially citrus fruits, and rosemary is an extract from the plantRosmarinus officinalis, an evergreen shrub which has anti-oxidant properties. Pet food containing natural preservatives, keep in mind that they cannot extend shelf life as long as the artificial preservatives.
Antioxidant consist of natural antioxidant and artificial antioxidant that work to preserve food from oxidation. The most common artificial antioxidants used in the pet food industry are ethoxyquin, butylated hydroxytoluene (BHT), and butylated hydroxyanisole (BHA). Artificial preservatives definitely keep ingredients stable longer and give a longer shelf life than natural antioxidants. Pets owner have had concerns over the safety of artificial preservatives in pet food such as in cases ethoxyquin which has been approved for use in animal feeds for over 30 years was related to the development of medical problems in their dogs, including allergic reactions, skin disease, organ failure, cancer, and behavior problems. However, the results from this study of ethoxyquin showed that ethoxyquin levels above the current amounts allowed in dog foods produced no reproductive abnormalities. The only adverse effects noted were mild increases in the blood levels of certain liver enzymes and an increase in the levels of a normally-occurring red blood cell metabolite. BHT and BHA are synthetic analogues of vitamin E and are often used together.
Commonly used natural antioxidants include tocopherols are a common source of vitamin E, ascorbic acid(vitamin C ) is provided by ingredients such as cranberries, blueberries, apples, and some other fruits,citric acid is also found in many of these especially citrus fruits, and rosemary is an extract from the plantRosmarinus officinalis, an evergreen shrub which has anti-oxidant properties. Pet food containing natural preservatives, keep in mind that they cannot extend shelf life as long as the artificial preservatives.
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