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| roduction of food additive-antioxidants |
| Release time:2012/6/27 |
| Fried products in the production and sales, storing, and in the process of oxidation often rancidity, adding antioxidants can extend the products of storage period. Antioxidants breed is very much, the total number of countries use about 30, China's current use of six divided into oil-soluble antioxidants and water-soluble antioxidant two kinds. Natural or synthetic phenolic antioxidatant was almost all oil-soluble, oil-soluble antioxidants can evenly distributed in oil, grease or fatty food can be very good plays its antioxidant effect. Now commonly used a synthetic butyl hydroxyl fennel ether (BHA), two butadiene styrene hydroxyl toluene (BHT), gallic acid, third ester (PG), tocopherol (vitamin E), and uncle butyl hydroquinone (TBHQ), more for resistance slow grease and food containing fat of the oxidation, they are mainly by inhibiting grease free radicals from oxidation and protect, natural tocopherol have mixed concentrate, etc. Water-soluble antioxidant is soluble in water of a class of antioxidants, more for the food to protect color (help color hair agent), prevent oxidation become angry, and prevent and reduce by oxygen food flavor and quality, and so on. Water-soluble antioxidant mainly L-ascorbic acid and sodium salt, different ascorbic acid and sodium salt and phytic acid, mainly used in meat, fruits and other sensitive food to oxidation fade. A hydroxyl fennel, butyl ether butyl ether and hydroxyl fennel, butyl-4-a hydroxyl fennel, butyl ether cummin ether, hereinafter referred to as the BHA, for white or light yellow wax solid.it or white crystalline powder, with specific phenolic ozone and stimulate flavour, on the thermal stability, insoluble in water, soluble in propylene glycol, acetone, ethanol and peanut oil, cottonseed oil, lard. Butyl hydroxyl fennel ether strong antioxidant effect, there are quite a strong antibacterial force, easy to use, but the cost is higher. He is the international widely used one of the antioxidants. Maximum use of 0.01%. Second, gallic acid lactone gallic acid ester referred to in PG, white or light yellow a crystalline powder, no smell, taste bitter. Soluble in ethanol, acetone and ethyl ether, soluble in fat and water, and on the heat stability. Gallic acid on fat, butter of acetone antioxidant zhao cover with a BHA or BHT strong, three mixed when using the best, add the booster citric acid is more strong effect, but with metal ions and shading effect. Three, two butadiene styrene hydroxyl class two butadiene of toluene (hereinafter referred to as the BHT toluene, white or colorless crystalline powder or block, odourless tasteless, to heat and light stability, insoluble in water and glycerin, easily soluble in ethanol, ethyl ether, soybean oil, cottonseed oil, lard. He fight oxidation are strong, good heat resistance, the price is low, but the toxic relatively high. He is the international, especially in aquatic products processing of widely used cheap antioxidants. Four, vitamin E vitamin E and name tocopherol. Natural has 7 isomers. As antioxidant use tocopherol is mixed concentrate tocopherol portion with the mixture of isomers present, it is the only thing on a lot of the production of the natural antioxidant. Vitamin E for yellow to brown odourless clear sticky liquid, soluble in ethanol and hardly soluble in water. Can and acetone, ethyl ether, chloroform, arbitrary mixed vegetable oil, hot stability. Vitamin E anti-oxidant than BHA role, BHT fight oxidation weak, but a low toxicity, also is the food nutrition fortifiers, mainly is suitable for the do baby food, health food, meat and dairy products and the antioxidants and food nutrition fortifiers. The amount of oil for food in 0.01-0.2% or so. Five, uncle butyl hydroquinone and says TBHQ, appearance white to shallow dark brown crystallization, basic odourless, slightly soluble in water, but soluble in most organic solvents and fat. This product in various of oil are all have good solubility, encounter iron, copper won't form a colored compound. It is a low toxicity and the dosage is small, application range, oxidation resistance of good oil and oil food antioxidants, our country allow it application in fish products, biscuits, speed cooking noodles, including oil cans, pickled vegetables. Next quarter fryers industrialized production introduced the food additive-quality improver |
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