Detection of γ‐ and δ‐keto acids in butterfat
- 1 January 1964
- journal article
- research article
- Published by Wiley in Recueil des Travaux Chimiques des Pays-Bas
- Vol. 83 (9) , 976-982
- https://doi.org/10.1002/recl.19640830912
Abstract
A mixture of keto acids (other then β) in an amount of about 100 p.p.m. has been isolated from steam‐deodorized butterfat by means of Girard‐T‐reagent. The methylated keto acids were fractionated and after saponification, the lower boiling fraction was reduced with sodium tetrahydridoborate. After heating of the hydroxy acids obtained, a small amount (about 2.5. p.p.m.) of γ‐ and δ‐lactones could be isolated. G.L.C.‐analysis demonstrated that the main components were δ‐octa, δ‐deca, δ‐dodecalactones and the minor components γ‐deca, γ‐undeca and γ‐dodecalactones, thus proving the presence of the corresponding keto acids in butterfat.Keywords
This publication has 12 references indexed in Scilit:
- Precursors of methyl ketones in butterJournal of Lipid Research, 1963
- Enzymatic Reduction of δ-Keto Acids to the Corresponding Optically Active Hydroxy AcidsNature, 1963
- Occurrence of ketostearic acid in cow's milk fat: suggested intermediates in unsaturated fatty acid biosynthesisBiochimica et Biophysica Acta, 1962
- Synthesis of Optically Active γ- and δ-Lactones by Microbiological ReductionNature, 1962
- Trace Constituents of ButterfatNature, 1962
- The Coconut-like Flavor Defect from Milk Fat. III. Observations on the Origin of δ-Decalactone in Fat-Containing Dairy ProductsJournal of Dairy Science, 1959
- Notes - Isolation of Carbonyl Compounds under Neutral Conditions Using the Girard ReagentThe Journal of Organic Chemistry, 1958
- The Coconut-Like Flavor Defect of Milk Fat. I. Isolation of the Flavor Compound from Butter Oil and its Identification as δ-DecalactoneJournal of Dairy Science, 1956
- Reduction of Aldehydes, Ketones and Acid Chlorides by Sodium BorohydrideJournal of the American Chemical Society, 1949
- STUDIES ON POLYMERIZATION AND RING FORMATION. I. AN INTRODUCTION TO THE GENERAL THEORY OF CONDENSATION POLYMERSJournal of the American Chemical Society, 1929