Non-Invasive Assessment of the Bioburden of Minced Pork Using a Hand-Held Fluorescence Device

C. Grimmler; M. Heiden; H. Schmidt

Non-Invasive Assessment of the Bioburden of Minced Pork Using a Hand-Held Fluorescence Device

In: 63rd International Congress of Meat Science and Technology

Authors:

C. Grimmler

C. Grimmler ¹University of Bayreuth, Chair of Bioanalytical Sciences and Food Analysis, Kulmbach, Germany

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M. Heiden

M. Heiden ²Freshdetect GmbH, Pullach im Isartal, Germany; heinar.schmidt@uni-bayreuth.de

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, and

H. Schmidt

H. Schmidt ¹University of Bayreuth, Chair of Bioanalytical Sciences and Food Analysis, Kulmbach, Germany

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Type:: Chapter

Pages:: 714–715

DOI:: https://doi.org/10.3920/9789086868605_320

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A hand-held fluorescence device was tested to quantify total viable aerobic plate counts (TVC) of minced pork. In total, 23 samples from eight different manufacturers were stored at 2 °C for up to 8 days. Fluorescence spectra and TVC were measured daily. Partial least squares regression yielded cross-validated correlations of the fluorescence spectra with log(TVC/g) and with storage time (R²cv = 0.83 and R²cv = 0.86). Both correlations weighted fluorescence signals of flavins and porphyrins differently. This results in a preliminary limit of quantification of bioburden of LOQ=3.19 log(TVC/g) at 95% confidence level. Freshly prepared minced meat (t <1 d) was discriminated with 98.8% accuracy from stored meat (t ³1 d) using partial least squares discriminant analysis.

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63rd International Congress of Meat Science and Technology

Nurturing locally, growing globally

E-Book ISBN:: 9789086868605

Publisher:: Wageningen Academic

Print Publication Date:: 15 Nov 2017

Subjects
- Life Sciences

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Non-Invasive Assessment of the Bioburden of Minced Pork Using a Hand-Held Fluorescence Device

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63rd International Congress of Meat Science and Technology

Nurturing locally, growing globally

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