標題: Differentiation of Animal Fats from Different Origins: Use of Polymorphic Features Detected by Raman Spectroscopy
作者: Motoyama, Michiyo
Ando, Masahiro
Sasaki, Keisuke
Hamaguchi, Hiro-O
應用化學系
Department of Applied Chemistry
關鍵字: Beef tallow;Lard;Triacylglycerol;Crystal;Polymorphism;beta '-polymorph;Raman spectroscopy;Vibrational spectroscopy
公開日期: 1-Nov-2010
摘要: 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 beta'-polymorph of fats. Pork fats show this band because they contain the beta'-polymorph after rapid cooling to 0 degrees C. In beef pork-fat mixtures, this hand 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.
URI: http://dx.doi.org/10.1366/000370210793335070
http://hdl.handle.net/11536/31986
ISSN: 0003-7028
DOI: 10.1366/000370210793335070
期刊: APPLIED SPECTROSCOPY
Volume: 64
Issue: 11
起始頁: 1244
結束頁: 1250
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