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Analysis of subcutaneous swine fat via deep Raman spectroscopy using a fiber-optic probe.
Kang, Jeon Woong; Lim, Soo Yeong; Galindo, Luis H; Yoon, Hongman; Dasari, Ramachandra R; So, Peter T C; Kim, Hyung Min.
Afiliação
  • Kang JW; Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Analyst ; 145(13): 4421-4426, 2020 Jul 07.
Article em En | MEDLINE | ID: mdl-32441278
ABSTRACT
Since the fat content of pork is a deciding factor in meat quality grading, the use of a noninvasive subcutaneous probe for real-time in situ monitoring of the fat components is of importance to vendors and other interested parties. In this work, we developed a spectroscopic method using a fiber-optic probe for subcutaneous fat analysis that utilizes spatially offset Raman spectroscopy (SORS). Here, normalized Raman spectra were acquired as a function of spatial offset, and the relative composition of fat-to-skin was determined. We found that the Raman intensity ratio varied disproportionately depending on the fat content and that the variations of the slope were correlated to the thickness of the fat layer. Furthermore, ordinary least square (OLS) regression using two components indicated that the depth-resolved SORS spectra reflected the relative thickness of the fat layer. We concluded that the local distribution of subcutaneous fat could be measured noninvasively using a pair of fiber-optic probes.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Analyst Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Analyst Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Estados Unidos