5757

5372

كارشناسي ارشد

علوم و صنايع غذايي

اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي

1389

هشت،80ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

علي نصيرپور، جواد كرامت

مهدي كديور، محمد سراجي

28/1/90

محمد فضيلتي، مرتضي صادقي

مهندسي كشاورزي

ID5372

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Study of Migration from Semi rigid Aluminum Base Packaging to an Iranian Stew Khorak Morgh after Thermal Processing and During Storage Fatemeh Siah Moshteh fsiahmoshteh@yahoo com Date of submission March 5 2011 College of Agriculture Dept of Food Science Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor s Name and Email address Ali Nasirpour anasirpour@cc iut ac ir Javad Keramat jkeramat@cc iut ac ir Abstract The main way for recognizing packages is dividing them to hard semi rigid and rigid The use of semi rigid packaging for ready to eat foods increases day by day The packages which used in this study belong to this kind of packaging that made from 2 main layer Aluminum and polypropylene For improving the function of these plastics during process forming and even use of them as food packaging different kind of additives such as antioxidants stabilizers lubricants antistatic substances and so on are added to them But these days the safety of these packages especially due to the migration of additives from them is in doubt Migrations of substances from packages to foods were studied in two aspects Global or overall migration which is the amount of substances transfer from packages to food include recognized and nonrecognized substances According to EU if the overall migration is lower than 10 mg dm2 or 60 mg kg of food the package will not have safety concern But the migrated substances may be very harmful Consequently the overall migration cannot assure the safety of packages Specific migration of is the measuring the transfer of certain and recognized substance from packages to food Measuring the overall migration is only possible in stimulants Ethanol 10 acetic acid 3 and extra deionized water as stimulants were used for this purpose Packages in 6 replications were filled with stimulants and sterilized After that the overall migration were measured using gravimetric method For all 3 simulants the amount of migration were lower than EU limit In this study since the base of these packages is Aluminum and it is considered as the element responsible for neurotic diseases especially Alzheimer therefore it is chosen as specific migration substance As the pH level of stew was between 2 EU stimulants In this work distilled water and 3 acetic acid as stimulants were processed exactly the same as chicken stews The migration of aluminum from packages to stew and the stimulants was determined after thermal processing and during storage at 45 C by ICP OES Also the Al content in chicken stew before sterilization was measured Results showed that migration from packages to water aluminum migration in water was very low and the migration in chicken stew was more than stimulants The effect of time on migration of Al was too significant Regarding the suggested provisional tolerable daily intake of 1 mg Al kg body weight per day of the FAO WHO Expert Committee on Food Additives Al leaching from semi rigid Al based packages may add low doses of Al into diet but the determined amount for stored packages may be risky for children and teenagers Keyword Migration Aluminum Chicken stew ICP OES

علي نصيرپور، جواد كرامت

مهدي كديور، محمد سراجي

محمد فضيلتي، مرتضي صادقي