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Optimization of modified atmosphere packaging system for extending shelf-life of sheep meat under refrigeration

Grant number: 13/07015-3
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): August 01, 2013
Effective date (End): January 31, 2016
Field of knowledge:Agronomical Sciences - Food Science and Technology - Food Engineering
Principal Investigator:Marco Antonio Trindade
Grantee:Isabela Rodrigues dos Santos
Host Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil
Associated scholarship(s):14/24414-1 - Improving thermal processing of meat, BE.EP.MS


The consumer market for sheep meat in Brazil is growing together with the new profile of consumers who search for food of higher quality and healthier. This raises the need for improvement of techniques aimed at preserving microbiological this food, without prejudice to their physicochemical and organoleptic characteristics. One solution is to use modified atmosphere packaging, which create an environment microbiologically safe and can be adjusted to facilitate the retention of certain desirable characteristics, such as the ideal color of meat. This research aims to optimize the concentration of gases inside the package in order to achieve such aspects. For it, loins of animals of the same breed, age, weight and production site, will be acquired and individually wrapped in packs with varying concentrations of CO2, O2 and N2, and stored under refrigeration (-1 to +1 ° C). Then, at intervals of 7 days, the following analyzes will be made for monitoring the study: lipid oxidation, color lens, physicochemical analysis (protein, fat, moisture, ash and pH), water loss by cooking and shear force, microbiological and sensory analysis. For characterization of the package will be evaluated weight and thickness, tightness and gas composition. The obtained data will be processed through the SAS statistical program (Statistic Analisy System), version 8.02, by ANOVA and Tukey's test at 5%. The experimental responses obtained will undergo adjustments linear regression models to check the trend of products in packaging systems, complementing the analysis with charts and / or graphs. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RODRIGUES, ISABELA; TRINDADE, MARCO ANTONIO; PALU, ANA FLAVIA; BALDIN, JULIANA CRISTINA; DE LIMA, CESAR GONCALVES; DE ALVARENGA FREIRE, MARIA TERESA. Modified atmosphere packaging for lamb meat: evaluation of gas composition in the extension of shelf life and consumer acceptance. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE, v. 55, n. 9, p. 3547-3555, . (12/20660-2, 13/07015-3)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
SANTOS, Isabela Rodrigues dos. Strategies for preserving meat stored under-cooling: modified atmosphere packaging and high pressure processing. 2016. Master's Dissertation - Universidade de São Paulo (USP). Faculdade de Zootecnica e Engenharia de Alimentos (FZE/BT) Pirassununga.

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