671-nm microsystem diode laser based on portable Raman sensor device for in-situ identification of meat spoilage

Kay Sowoidnich; Heinar Schmidt; Fredi Schwägele; Heinz-Detlef Kronfeldt

doi:10.1117/12.883350

26 May 2011 671-nm microsystem diode laser based on portable Raman sensor device for in-situ identification of meat spoilage

Kay Sowoidnich, Heinar Schmidt, Fredi Schwägele, Heinz-Detlef Kronfeldt

Author Affiliations +

Proceedings Volume 8024, Advanced Environmental, Chemical, and Biological Sensing Technologies VIII; 80240D (2011) https://doi.org/10.1117/12.883350
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

Based on a miniaturized optical bench with attached 671 nm microsystem diode laser we present a portable Raman system for the rapid in-situ characterization of meat spoilage. It consists of a handheld sensor head (dimensions: 210 x 240 x 60 mm³) for Raman signal excitation and collection including the Raman optical bench, a laser driver, and a battery pack. The backscattered Raman radiation from the sample is analyzed by means of a custom-designed miniature spectrometer (dimensions: 200 x 190 x 70 mm³) with a resolution of 8 cm^-1 which is fiber-optically coupled to the sensor head. A netbook is used to control the detector and for data recording. Selected cuts from pork (musculus longissimus dorsi and ham) stored refrigerated at 5 °C were investigated in timedependent measurement series up to three weeks to assess the suitability of the system for the rapid detection of meat spoilage. Using a laser power of 100 mW at the sample meat spectra can be obtained with typical integration times of 5 - 10 seconds. The complex spectra were analyzed by the multivariate statistical tool PCA (principal components analysis) to determine the spectral changes occurring during the storage period. Additionally, the Raman data were correlated with reference analyses performed in parallel. In that way, a distinction between fresh and spoiled meat can be found in the time slot of 7 - 8 days after slaughter. The applicability of the system for the rapid spoilage detection of meat and other food products will be discussed.

Citation Download Citation

Kay Sowoidnich, Heinar Schmidt, Fredi Schwägele, and Heinz-Detlef Kronfeldt "671-nm microsystem diode laser based on portable Raman sensor device for in-situ identification of meat spoilage", Proc. SPIE 8024, Advanced Environmental, Chemical, and Biological Sensing Technologies VIII, 80240D (26 May 2011); https://doi.org/10.1117/12.883350

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Raman spectroscopy

Sensors

Principal component analysis

Statistical analysis

Semiconductor lasers

Head

Microsystems

Show All Keywords

Keywords/Phrases

Search In:

Publication Years