University of Oulu

M. Peyvasteh, A. Popov, A. Bykov, and I. Meglinski "Assessment of pork freshness based on changes in constituting chromophores using visible to near-infrared spectroscopy", Proc. SPIE 11202, Biophotonics Australasia 2019, 112020X (30 December 2019);

Assessment of pork freshness based on changes in constituting chromophores using visible to near-infrared spectroscopy

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Author: Peyvasteh, M.1; Popov, A.1; Bykov, A.1;
Organizations: 1Optoelectronics and Measurement Techniques, University of Oulu, Oulu, FI-90014, Finland
2National Research Nuclear University “MEPhI”, Institute of Engineering Physics for Biomedicine (PhysBio), 115409 Moscow, Russia
3Interdisciplinary Laboratory of Biophotonics, National Research Tomsk State University, 634050 Tomsk, Russia
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.2 MB)
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Language: English
Published: SPIE, 2019
Publish Date: 2020-11-11


Visible to near-infrared spectroscopy has been applied for non-invasive assessment of meat freshness. The measurements were done at room temperature with non-frozen pork samples. The absorbance spectra of the main chromophores in meat including oxymyoglobin, water, fat, and protein were different enough to be identified spectrophotometrically. The decreasing trend in absorbance spectra of these components over time can be associated with freshness decay. We used two configurations, fiber-optic probes and integrating sphere, to study their efficiency in meat quality evaluation. In the integrated sphere configuration, the samples experienced an immediate smooth decrease of oxymyoglobin absorbance arising from loss of superficial freshness, while degradation kinetics of water, fat and protein absorbance were detected after about 2.5 hours. In the fiber-optic configuration capable for sensing up to 570-μm depth, the drop in oxymyoglobin absorbance started after 4.5 hours which would affect directly the color of sample associated with freshness.

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Series: Proceedings of SPIE
ISSN: 0277-786X
ISSN-E: 1996-756X
ISSN-L: 0277-786X
ISBN Print: 978-1-5106-3144-1
Article number: 112020X
DOI: 10.1117/12.2539969
Host publication: Biophotonics Australasia 2019
Host publication editor: Goldys, E. M.
Gibson, B. C.
Conference: Biophotonics Australasia
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Copyright information: © (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.