title: Combined effect of electron-beam (beta) irradiation and organic acids on shelf life of pork loins during cold storage.
abstract: The combined effects of organic acids and irradiation on shelf life of pork loins were examined. Fresh pork loins were sprayed with organic acids (lactic, citric, and acetic) at 2%, packaged aerobically, and irradiated with an electron beam at 1, 2, and 3 kGy. During 14 days of storage, total plate count, coliform number, pH, and thiobarbituric acid-reactive substances were measured. Combinations of organic acid and irradiation were more effective in reducing and maintaining low total plate counts and coliform levels during storage than either treatment alone. Higher lipid oxidations were observed in all combination treatments at 1 day of storage than in the irradiation-only group. However, lower lipid oxidations were the result after 14 days of storage when combination treatments were used with irradiations of 2 and 3 kGy. Combined treatments involving lower irradiation doses than those required for irradiation alone could be used to extend the shelf life of pork loins during postirradiation storage without increasing lipid oxidation.
authors.affiliation: Laboratory of Muscle Food Science and Technology, School of Agricultural Biotechnology, Seoul National University, Seoul 151-742, Korea.
authors.forename: Bang-Hyun
authors.initials: BH
authors.lastname: Kim
authors.forename: Aera
authors.initials: A
authors.lastname: Jang
authors.forename: Sang O
authors.initials: SO
authors.lastname: Lee
authors.forename: Joong S
authors.initials: JS
authors.lastname: Min
authors.forename: Mooha
authors.initials: M
authors.lastname: Lee
mesh_terms: D019342:Acetic Acid / Q000494:pharmacology; D000818:Animals; D019343:Citric Acid / Q000494:pharmacology; D003080:Cold Temperature; D015169:Colony Count, Microbial; D004307:Dose-Response Relationship, Radiation; D005511:Food Handling / Q000379:methods*; D005514:Food Irradiation; D005519:Food Preservation / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D019344:Lactic Acid / Q000494:pharmacology; D050356:Lipid Metabolism; D008460:Meat / Q000382:microbiology*; D013552:Swine; D017392:Thiobarbituric Acid Reactive Substances / Q000032:analysis; D013997:Time Factors
chemical_list: D017392:Thiobarbituric Acid Reactive Substances; D019343:Citric Acid; D019344:Lactic Acid; D019342:Acetic Acid