Kapitel/Beitrag aus dem Buch: Längle, T et al. 2017. OCM 2017 – 3rd International Conference on Optical Characterization of Materials, March 22nd – 23rd, 2017, Karlsruhe, Germany : Conference Proceedings.
To speed-up monitoring of the hygienic status of meat, fast and non-invasive measuring techniques are required. The feasibility of a hand-held fluorescence device (freshdetect) was investigated to quantify the bioburden of minced pork meat. In total, 144 minced pork samples from 18 batches were stored at 2°C for up to 8 days. Fluorescence spectra, L*a*b* colour and total viable mesophilic plate counts (TVC) were measured in parallel during this period. Correlation of the fluorescence spectra with log(TVC/g) using partial least squares regression yielded cross-validated predictions with R²cv = 0.72 and a prediction error of RMSECV = 0.97 log(TVC/g). Cross-validated limits of detection and quantification were determined as 1.03 and 3.38 log(TVC/g), respectively. This would allow for a quantification well below the alarm threshold of 5.7-6.7 log(TVC/g). The spectra correlated also well with storage time (R²cv = 0.81), but less strong with L*a*b* colour.
Grimmler, C et al. 2017. Non-invasive assessment of the bioburden of minced pork using a hand-held fluorescence device. In: Längle, T et al (eds.), OCM 2017 – 3rd International Conference on Optical Characterization of Materials, March 22nd – 23rd, 2017, Karlsruhe, Germany : Conference Proceedings. Karlsruhe: KIT Scientific Publishing. DOI: https://doi.org/10.58895/ksp/1000063696-4
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Veröffentlicht am 24. März 2017