Abstract
The degree of oxidation in cooked meats treated with phosphates or polyphosphates and sodium ascorbate (SA) or one of its related compounds was determined using the 2-thiobarbituric acid (TBA) test. Combinations of ascorbates with a polyphosphate effectively retarded lipid oxidation in cooked pork during a 5-week storage period at refrigerator temperature. Addition of a phenolic antioxidant—butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), propyl gallate (PG), tert-butylhydroquinone (TBHQ) or trihydroxybutyrophenone (THBP)—to the above mixtures did not affect the TBA numbers substantially (≤0·1 TBA unit). Ethylenediaminetetraacetic acid disodium salt (Na 2 EDTA) with sodium ascorbate, with or without a phenolic antioxidant, was effective in protecting cooked pork from oxidation (TBA numbers of ≤1). Commercial antioxidant systems, Tenox A and Tenox II, were also effective in retarding meat rancidity, but Ronoxan A and Ronoxan D20 were only slightly effective.
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