Semiquantitative Analysis of Fresh Sweet-Cream Butter Volatiles,

Abstract The neutral volatile fraction of fresh sweet-cream butter was analyzed semiquantitatively by capillary gas-liquid chromatography. Butter concentrations for 49 compounds ranged from approximately five parts for δ-dodecalactone to 5×10 −4 parts per million (ppm) for benzene. Other compounds whose concentrations were determined include odd-number methyl ketones, several alkanals, δ-lactones, γ-lactones, diacetyl, ethyl esters, and a number of aromatic compounds. Delta-C 10 ; C 12 , and C 14 lactones were above 1ppm; methyl ketones were approximately 0.1 to 0.4ppm; alkanals were generally lower than ketones, and aromatic compounds were in the parts per billion.

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