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Effect of Adding Oregano Essential Oil, Garlic and Tomato Preparations Separately and in Combination on the Stability of Vacuum-Packed Minced Pork During Storage Cover

Effect of Adding Oregano Essential Oil, Garlic and Tomato Preparations Separately and in Combination on the Stability of Vacuum-Packed Minced Pork During Storage

Open Access
|Mar 2015

Abstract

This paper investigates the effect of adding oregano essential oil (0.02% v/w), freeze-dried garlic (1%), tomato concentrate (15%) and a combination of all three (in the same concentrations) on the shelf life of minced pork meat. Vacuum-packed samples with additives and a control were stored at 6±1°C for 16 days. Sensory, microbiological and biochemical changes were analysed over the whole storage period. The beneficial effect of oregano essential oil was generally to inhibit lipid oxidation, although its effect on bacterial growth was very weak. Adding tomato concentrate, combined with other additives, slowed the rate of microbiological and sensory changes, but had a marked effect on changes in proteins (SDS-PAGE analysis) and the proportion of meat pigments. The addition of freeze-dried garlic did not cause a substantial reduction of detectable bacteria count. Adding a combination of all three additives resulted in a product with a distinctly longer shelf life.

DOI: https://doi.org/10.2478/aoas-2014-0065 | Journal eISSN: 2300-8733 | Journal ISSN: 1642-3402
Language: English
Page range: 221 - 235
Submitted on: Feb 21, 2014
Accepted on: Jul 18, 2014
Published on: Mar 3, 2015
Published by: National Research Institute of Animal Production
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2015 Magdalena Michalczyk, Ryszard Macura, Joanna Banaś, Iwona Tesarowicz, Ireneusz Maciejaszek, published by National Research Institute of Animal Production
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.