title: Antioxidative effects of encapsulated sodium tripolyphosphate and encapsulated sodium acid pyrophosphate in ground beef patties cooked immediately after antioxidant incorporation and stored.
abstract: Ground beef with 1% NaCl was incorporated with 0.5% unencapsulated sodium tripolyphosphate (uSTP), 0.5% encapsulated sodium tripolyphosphate (eSTP), 0.5% unencapsulated sodium acid pyrophosphate (uSAPP), or 0.5% encapsulated sodium acid pyrophosphate (eSAPP) prior to being cooked and stored (0 or 6 d, 3 °C). The pH was higher (P<0.05) for sodium tripolyphosphate samples (6 d: uSTP 5.98; eSTP 5.89) and lower (P<0.05) for sodium acid pyrophosphate (6 d: uSAPP 5.31, eSAPP 5.33) samples than control sample (6 d, 5.50). Overall, samples with uSTP had the least cooking loss and lowest TBARS values. TBARS (mg/kg) for the phosphate treatments were lower (P<0.05; ave. 1.78, 0 d; 3.49, 6 d) than for the control samples (3.07, 0 d; 22.85, 6 d). Therefore, phosphate incorporation into ground beef prior to cooking aids in the reduction of oxidation in the cooked, stored product, although a longer period of time before thermal processing may be necessary for the encapsulated phosphate to have significant benefits.
authors.affiliation: Department of Food Science and Technology, Virginia Tech, Food Science and Technology Building, Blacksburg, VA 24061, USA.
authors.forename: Marsha L
authors.initials: ML
authors.lastname: Sickler
authors.forename: James R
authors.initials: JR
authors.lastname: Claus
authors.forename: Norman G
authors.initials: NG
authors.lastname: Marriott
authors.forename: William N
authors.initials: WN
authors.lastname: Eigel
authors.forename: Hengjian
authors.initials: H
authors.lastname: Wang
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D002417:Cattle; D003296:Cooking; D011756:Diphosphates / Q000494:pharmacology*; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D050356:Lipid Metabolism / Q000187:drug effects; D008460:Meat / Q000032:analysis*; D010084:Oxidation-Reduction / Q000187:drug effects; D010744:Phosphoric Monoester Hydrolases / Q000037:antagonists & inhibitors / Q000378:metabolism; D011122:Polyphosphates / Q000494:pharmacology*; D017392:Thiobarbituric Acid Reactive Substances / Q000032:analysis
chemical_list: D000975:Antioxidants; D011756:Diphosphates; D011122:Polyphosphates; D017392:Thiobarbituric Acid Reactive Substances; D010744:Phosphoric Monoester Hydrolases; C005692:triphosphoric acid; C003319:sodium pyrophosphate