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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 1 — Jan. 3, 2011

Differentiation of Animal Fats from Different Origins: Use of Polymorphic Features Detected by Raman Spectroscopy

Michiyo Motoyama, Masahiro Ando, Keisuke Sasaki, and Hiro-O Hamaguchi

Applied Spectroscopy, Vol. 64, Issue 11, pp. 1244-1250 (2010)


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Abstract

Food safety requires the development of reliable techniques that ensure the origin of animal fats. In the present work, we try to verify the efficacy of using the polymorphic features of fats for discriminating animal-fat origins. We use Raman spectroscopy to collect the structural information of fat crystals. It is shown that a single Raman band at 1417 cm–1 successfully differentiates pork fats from beef fats. This band is known to be characteristic of the β′-polymorph of fats. Pork fats show this band because they contain the β′-polymorph after rapid cooling to 0 °C. In beef–pork-fat mixtures, this band is not detected even in the presence of 50% pork fat; an addition of beef fat to pork fat is likely to produce a mixed fat with a completely different polymorphic behavior. This method seems to have the potential to detect beef products contaminated with pork-adipose tissue.

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Vol. 6, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Michiyo Motoyama, Masahiro Ando, Keisuke Sasaki, and Hiro-O Hamaguchi, "Differentiation of Animal Fats from Different Origins: Use of Polymorphic Features Detected by Raman Spectroscopy," Appl. Spectrosc. 64, 1244-1250 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=as-64-11-1244


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