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Early postmortem prediction of meat quality traits of porcine semimembranosus muscles using a portable Raman system

Title data

Scheier, Rico ; Bauer, Aneka ; Schmidt, Heinar:
Early postmortem prediction of meat quality traits of porcine semimembranosus muscles using a portable Raman system.
In: Food and Bioprocess Technology. Vol. 7 (2014) Issue 9 . - pp. 2732-2741.
ISSN 1935-5149
DOI: https://doi.org/10.1007/s11947-013-1240-3

Project information

Project title:
Project's official titleProject's id
Grundlagenuntersuchungen zur Raman-Sensorik von Lactat für eine automatisierbare Beurteilung der Fleischqualität in der ProzessketteSchm2724/1-1
Entwicklung von Analysenmethoden zur Etablierung einer online-fähigen Beurteilung von Fleisch16692 N

Project financing: Deutsche Forschungsgemeinschaft
Arbeitsgemeinschaft industrieller Forschungsvereinigungen "Otto von Guericke" e.V. (AiF)

Abstract in another language

Modern abattoirs are lacking objective, fast, and noninvasive methods to measure or predict important meat quality traits such as pH, color, drip loss, or shear force early postmortem. In this work, a mobile Raman system was used to perform measurements under real-life conditions in the cooling room of an abattoir using pig's semimembranosus muscles (N = 96), 60–120 min after exsanguination. The traits pH45, pH24, CIE L*a*b*, drip loss, and shear force after 24 and 72 h were measured as reference and correlated with the Raman spectra using partial least squares regression. Strong correlations of the Raman spectra were obtained for pH45 (R² cv = 0.65, RMSECV = 0.17 pH units), pH24 (R² cv = 0.68, RMSECV = 0.09 pH units), L*-value (R² cv = 0.64, RMSECV = 1.9), b*-value (R² cv = 0.73, RMSECV = 0.6), drip loss (R² cv = 0.73, RMSECV = 1.0 %), and shear force after 72 h (R² cv = 0.7, RMSECV = 4 N). On the other hand, shear force after 24 h and a*-value showed only weak correlations (R² cv = 0.22, RMSECV = 7.8 N and R² cv = 0.36, RMSECV = 1.3). The predictions can be traced back to differences in the early postmortem metabolic conditions as indicated by Raman signals of phosphocreatine, creatine, adenosine triphosphate, inosine monophosphate, glycogen, lactate, phosphorylated metabolites, and inorganic phosphate. This study demonstrates the potential of Raman spectroscopy for the early postmortem prediction of six pork quality traits which can be useful for the discrimination of meat qualities and sorting in the production chain.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: pH; Drip loss; Color; Shear force; Noninvasive; In situ
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Lehrstuhl Bioanalytik und Lebensmittelanalytik
Profile Fields
Profile Fields > Emerging Fields
Profile Fields > Emerging Fields > Food and Health Sciences
Research Institutions
Research Institutions > Research Units
Research Institutions > Research Units > Forschungsstelle für Nahrungsmittelqualität - ForN
Result of work at the UBT: Yes
DDC Subjects: 500 Science
500 Science > 570 Life sciences, biology
Date Deposited: 01 Apr 2015 09:20
Last Modified: 28 Jan 2016 11:13
URI: https://eref.uni-bayreuth.de/id/eprint/9749