American Journal of Food Technology1557-45711557-458XAcademic Journals Inc.10.3923/ajft.2017.140.143El-SalamM.H. Abd HassanM.N.A. El-FattahA.M. Abd El-SayedM.M. AssemF. El-AaserM. 22017122Background: β-casein was separated from different kinds of milk (Buffalo, cow, goat and camel). Conjugated Linoleic Acid (CLA) was loaded in β-casein micelles. The micellar solution was frozen then lyophilized and stored in refrigerator. Methodology: A rapid method has been developed for the determination of encapsulated (CLA) in nano β-casein particles. A rapid method has been developed for the determination of encapsulated conjugated linoleic acid in nano β-casein particles. The method is based on the direct measurements of the absorbance of a solution of CLA loaded nanoparticles at 233 nm. Results: The determined CLA was highly correlated with initial concentration of CLA used in encapsulation and with results obtained by ethanol extraction. Conclusion: The method offers the advantage of eliminating the need for solvent extraction of entrapped CLA before spectrophotometric measurement.]]>Koba, K. and T. Yanagita,20148e525e532Belury, M.A.,200222505531Zimet, P., D. Rosenberg and Y.D. Livney,20112512701276Ilyasoglu, H. and S. Nehir El,201456461468Cruz-Hernandez, C., Z. Deng, J. Zhou, A.R. Hill and M.P. Yurawecz et al.,2004trans-18:1 isomers in dairy fats by using a combination of gas chromatography, silver-ion thin-layer chromatography/gas chromatography and silver-ion liquid chromatography.]]>87545562Barrett, E., R.P. Ross, G.F. Fitzgerald and C. Stanton,20077323332337Aldai, N., D.C. Rolland, J.K.G. Kramer and M.E.R. Dugan,200787181184Huppertz, T., J.B. Hennebel, T. Considine, Shakeel-Ur-Rehman, A.L. Kelly and P.F. Fox,2006994550Reaney, M.J.T., Y.D. Liu and N.D. Westcott,19991999pp: 39-54pp: 39-54Steel, R.G.D. and J.H. Torrie,19802nd Edn.,Pages: 633Pages: 633Forbes, W.F., R. Shilton and A. Balasubramanian,19642935273531