Associação de ácidos orgânicos, solução salina acidificada e radiação UV-C na validade comercial de carne suína.

• Ano de defesa: 2013
• Autor(a) principal: Carli, Eliane Maria de
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Ciência e Tecnologia dos Alimentos; UFSM; Programa de Pós-Graduação em Ciência e Tecnologia dos Alimentos
• Palavras-chave em Português: Carne suína; Segurança alimentar; Ácidos orgânicos; Irradiação UV-C; Pork; Food safety; Organic acids; UV-C irradiation; CNPQ::CIENCIAS AGRARIAS::CIENCIA E TECNOLOGIA DE ALIMENTOS
• Link de acesso: http://repositorio.ufsm.br/handle/1/3395

Pork is the most widely produced and consumed meat in the world and due to this fact, the industry is always looking for ways to increase the shelf life of the product. Therefore, the aim of this work is to evaluate the effect of combined methods, UV-C irradiation, organic acids, saline solution, in the commercial validity of swine carcass. 78 cuts of bone-in ham were randomly selected from a slaughterhouse under Federal Inspection in western Santa Catarina and the following treatments were conducted: control ( C ); , T1: 1% lactic acid (v / v) + 0.80% of ascorbic acid (g / v) + 1% citric acid (g / v) + 5.4 KJ UV-C radiation (T1) and T2: 1% lactic acid (v / v ) + 0.10 % acid ascorbic ( g / v ) + 1% citric acid (g / v) + 9.46 KJ UV-C radiation (T2 ); the samples were frozen at -18° C for one year, during which microbiological, physico-chemical and sensory analyses were carried out, in times zero, 90 , 180 and 360 days. In a second and third experiment microbiological, physicochemical and sensory analyses were carried out on bone-in ham refrigerated at 2 °C ( ± 1 º C ) and 4 ° C ( ± 1 °C ), stored in plastic bags for 25 and 30 days, with the analyses performed on days zero, 5, 10, 15, 20, 25 and 30 after storage. The following treatments were conducted : Control (C) , T1: 1% lactic acid (v / v ) + 0.80 % ascorbic acid (g / v) + 1% citric acid (g / v) + 5.4 KJ UV-C radiation (T1 ), T2: 1% lactic acid (v / v ) + 0.10 % ascorbic acid (g / v) + 1% citric acid (g / v) + 9.46 KJ UV- C radiation (T2) and T3: 1% lactic acid (v / v) + 0.80 ascorbic acid (g / v) + 1% citric acid (g / v) + 0.6% acetic acid ( v / v ) + 5.4 KJ UV-C radiation (T3). T4: acidified saline solution + 0.6% 5.4 KJ UV- C radiation (T4 ); T5: 5.4 KJ UV-C radiation (T5 ), T6 9.46 KJ UV-C radiation (T6 ) and control (C), T1: 1% lactic acid (v / v ) + 0.80 % ascorbic acid (g / v) + 1% citric acid (g / v ), T2 : 1% lactic acid ( v / v ) + 0.10 % ascorbic acid (g / v) + 1% citric acid (g / v ), T3 : 1% lactic acid (v / v) + 0.80% ascorbic acid ( g / v ) + 1% citric acid (g / v) + 0.6 % acetic acid (v / v); T4: acidified saline solution at 0.6%, T5: 1% acidified saline solution T6 : Application of water at 80 °C , T7: Application of ultraviolet light for 1 minute , 30W power, T8 : Application of ultraviolet light for 3 minutes , 30W power. Through statistical analysis, it was observed that the pH values increased in the chilled and frozen samples, treated or untreated. A higher lipid oxidation was observed in treated frozen samples and in the control samples of chilled meat. On the mesophilic and psychrotrophic aerobes count, it was observed that the control samples had higher counts in relation to the treated samples both in the frozen and chilled meats. Therefore the effective action of the combined methods was demonstrated in treated samples, in relation to the increased shelf life of pork. In relation to sensory analysis, the treated samples in both experiments showed a greater acceptance of the product by the judges. In the color analysis, the treated samples showed good results, showing little or even imperceptible changes. It is concluded that the use of combined methods of organic acids and UV-C irradiation were found to be effective in increasing the shelf life of both frozen as well as chilled pork.