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Combination of high pressure with nisin or lysozyme to further process mechanically recovered poultry meat

J. Yuste, M. Mor‐Mur, B. Güamis, R. Pla

Open publisher page 6 citations

Abstract

The combined effect of high pressure processing (HPP) and nisin or lysozyme on aerobic mesophile and psychrotrophe populations of mechanically recovered poultry meat (MRPM) was evaluated. Nisin (0, 12.5, 100 and 200ppm) or lysozyme (0 and 150ppm) were added to MRPM, and vacuum-packaged samples were treated at 350 and 450 MPa for 5 and 15min at 20°C. In mesophiles, reductions above 4 log CFU/g were found in some samples. Psychrotrophes proved more sensitive; in MRPM containing 200 ppm of nisin treated at 450 MPa for 15min, no growth was detected (a lethality of more than 8 log units). There was no synergistic effect between HPP and lysozyme. In contrast, combination of HPP and nisin is a promising nonthermal preservation treatment.

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What this paper is about

The combined effect of high pressure processing (HPP) and nisin or lysozyme on aerobic mesophile and psychrotrophe populations of mechanically recovered poultry meat (MRPM) was evaluated. Nisin (0, 12.5, 100 and 200ppm) or lysozyme (0 and 150ppm) were added to MRPM, and vacuum-packaged samples were treated at 350 and 450 MPa for 5 and 15min at 20°C. In mesophiles, reductions above 4 log CFU/g were found in some samples. Psychrotrophes proved more sensitive; in MRPM containing 200 ppm of nisin treated at 450 MPa for 15min, no growth was detected (a lethality of more than 8 log units). There was no synergistic effect between HPP and lysozyme. In contrast, combination of HPP and nisin is a promising nonthermal preservation treatment.

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Available abstract

The combined effect of high pressure processing (HPP) and nisin or lysozyme on aerobic mesophile and psychrotrophe populations of mechanically recovered poultry meat (MRPM) was evaluated. Nisin (0, 12.5, 100 and 200ppm) or lysozyme (0 and 150ppm) were added to MRPM, and vacuum-packaged samples were treated at 350 and 450 MPa for 5 and 15min at 20°C. In mesophiles, reductions above 4 log CFU/g were found in some samples. Psychrotrophes proved more sensitive; in MRPM containing 200 ppm of nisin treated at 450 MPa for 15min, no growth was detected (a lethality of more than 8 log units). There was no synergistic effect between HPP and lysozyme. In contrast, combination of HPP and nisin is a promising nonthermal preservation treatment.

Key concepts: Nisin, Lysozyme, Mesophile, Pascalization, Food science, Chemistry, High pressure, Biochemistry

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