Dr. Hanaa Sayed Mohamed is a Researcherof Human Nutrition, Department of Special Food and Nutrition, Food Technology Res. Inst, (FTRI), Agric. Res. Center (ARC), 9- Cairo Univ. St, Giza, Egypt, and Lecturer in Agriculture cooperation High Inst, Cairo, Egypt. And she completed ph.D from Cairo University (2005) Proteins and Enzymes Ph.D Agriculture  menofia University (2009) EFFECT OF USING SOME PRESERVATIVES ON SOME VITAMINS