Aliphatic γ- and δ-Lactones in Meat Fats

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  • WATANABE Kenji
    Laboratory of Chemistry_??_Technology of Animal Products, Department of Agricultural Chemistry, Faculty of Agriculture, Nagoya University
  • SATO Yasushi
    Laboratory of Chemistry_??_Technology of Animal Products, Department of Agricultural Chemistry, Faculty of Agriculture, Nagoya University

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  • Aliphatic<i>γ</i>- and<i>δ</i>-Lactoijes in Meat Fats

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The present investigations was undertaken to isolate the free and bound lactone fractions in fresh beef fat, and the total lactone fractions in fresh pork, mutton, horse and chicken fats. δ-C14 and δ-C16 lactones were identified in gas chromatogram of free lactone fraction, though the amount of that fraction was almost negligible. γ-C10 to C16 and δ-C10 to C18 lactones of the even carbon number were found in bound lactone fraction which was obtained from glycerides by saponification. The lactone fractions in the other meat fats were isolated by saponification, steam-distillation, and silicic acid column chromatography. γ- and δ-C10 to C14 lactones of the even carbon number were found in all of fats tested, and gas chromatograms of lactone fraction in meat fats used showed the similar patterns. δ-C14 lactone was characteristic in meat fats.

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