The M.Sc. Thesis submitted by Mr. Assem Mahmoud Abdel Shafi  , Food Science & Technology . Department, entitled: "Studies On improving shelf-Life and Safety of tomato Products Using Some volatile oils " . Under supervision of: 1.  Prof. Mohammed Al Anwar Hassan Jiddawi 2.  Prof. Wafik Sanad Mousa Ragab 3.   Prof . Ahmed Gomaa Nassar   Approved BY: 1.. Prof : Samy Ibrahim Mohamed Elsyiad 2.. Prof : Wafik Sanad Mousa Ragab 3.. Prof : Mohammed Abdel-Hamid Srour 4  ..Prof. Ahmed Gomaa Nassar   Would be discussed at Sunnday 9/10/2016 on 11.00 o’clock, in in Department Hall