title: Influence of natural extracts on the shelf life of modified atmosphere-packaged pork patties.
abstract: In this study four natural extracts from tea (TEA), grape (GRA), chestnut (CHE) and seaweed (SEA) with potential antioxidant activity were evaluated in pork patties. During 20 days of storage in modified atmosphere packs at 2°C, pH, colour, lipid oxidation and microbial spoilage parameters of raw minced porcine patties were examined and compared with a synthetic antioxidant (BHT) and control (CON) batch. Due to their higher polyphenol content, GRA and TEA extracts were the most effective antioxidants against lipid oxidation, also limiting colour deterioration. In addition, both natural extracts led to a decrease of total viable counts (TVC), lactic acid bacteria (LAB), Pseudomonas and psychotropic aerobic bacteria compared to the control. Among the four natural compounds tested, tea and grape extracts showed the most potential as alternatives to commercial antioxidants, for increasing the quality and extending the shelf-life of porcine patties.
authors.affiliation: Centro Tecnológico de la Carne de Galicia, Rúa Galicia Nº 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain.
authors.forename: José M
authors.initials: JM
authors.lastname: Lorenzo
authors.forename: Jorge
authors.initials: J
authors.lastname: Sineiro
authors.forename: Isabel R
authors.initials: IR
authors.lastname: Amado
authors.forename: Daniel
authors.initials: D
authors.lastname: Franco
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D003116:Color; D005506:Food Contamination / Q000517:prevention & control; D005516:Food Microbiology; D018857:Food Packaging / Q000379:methods*; D005519:Food Preservation / Q000379:methods*; D005520:Food Preservatives / Q000494:pharmacology; D056604:Grape Seed Extract / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D007778:Lactobacillus / Q000187:drug effects / Q000254:growth & development; D050356:Lipid Metabolism / Q000187:drug effects; D008460:Meat / Q000032:analysis* / Q000382:microbiology; D050296:Microbial Viability / Q000187:drug effects; D010936:Plant Extracts / Q000494:pharmacology; D059808:Polyphenols / Q000494:pharmacology; D011549:Pseudomonas / Q000187:drug effects / Q000254:growth & development; D012624:Seaweed / Q000737:chemistry; D013552:Swine; D013662:Tea / Q000737:chemistry; D027843:Vitis / Q000737:chemistry
chemical_list: D000975:Antioxidants; D005520:Food Preservatives; D056604:Grape Seed Extract; D010936:Plant Extracts; D059808:Polyphenols; D013662:Tea
keywords: Display life; Microbial spoilage; Natural antioxidant; Oxidative stability