الفهرس 
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Abstract
ACY.NOvL:::DGEMEl\1
The autr.er would like to express his deepest
gratitude and sincere appreciation to prof.Dr. G.A.Mahran.
Food Sci. Dept. ,Fac. of Agric .. Ain Shams Univ .. Prof. Dr.
Safinaz El-Shibiny head of Food Tech.& Dairy Dept.
National Research Center ( NRC and Dr.H.F.Haggag.
Associate PROf.at the first Dept. for their suppervision
guidance and encouragement they kindly offered throughout
the course of this work.
Iam very much indebtil to Dr. M.B.Mahfouz.Associate
prof.at the second Dept. NRC. for every possible help be
sincerely offered.
Gratiful acknowledgement should be extended to
prof.DR. J.L.Maubois and to the staff of the Dairy Research
Laboratory. National Institute of Agronomic Researches
INRA ) in Rennes - France for their cooperation during
earring out part of the expermental work.