The Effect of Nanofilm Coating Containing Ag on the Shelf Life of Mazafati Date

Subject Areas : Microbiology

Seyyedeh Fatemeh Peyro Mousavi ¹ , Amir Heidari Nasab ² , Hassan HashemiPour ³ , Ali Asghar Rajabalipour ⁴

1 - دانشجوی کارشناسی ارشد دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، دانشکده فنی و مهندسی، گروه مهندسی شیمی، تهران، ایران
2 - دانشیار دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، دانشکده فنی و مهندسی، گروه مهندسی شیمی، تهران، ایران
3 - دانشیار دانشگاه شهید باهنر کرمان، دانشکده فنی و مهندسی، گروه مهندسی شیمی، کرمان، ایران
4 - مربی بخش تحقیقات فنی و مهندسی، مرکز تحقیقات جهاد کشاورزی و منابع طبیعی کرمان، ایران

Received: 2012-07-08 Accepted : 2013-03-10 Published : 2013-09-23

Keywords: Mazafati Date, Nanoparticles, Nanosilver, Shelf-Life,

Abstract :

Introduction: The aim of this study is to increase the shelf life and improve the quality of the product trade and export in Kerman Province by using coatings containing nanosilver particles and determining the optimal temperature for the storage of this product. Materials and Methods: In this study, nanocomposite LDPE films containing nanosilver particles were prepared (3%, 5%), Dates from Aziz Abad, Bam were packed in nano-coated coverage and were stored at 50, 20, 8 and 4 UC. The samples were examined after 2, 7, 21 and 53 days. The experiments concerned with pH, TSS, acidity and reducing sugar were carried out according to the approved methods by the Research and Industry Standard Institute of Iran.Results: By increasing the acidity, the pH values decreased for all the samples examined including the control. The acidity for the samples containing 5% nanosilver particles was less than the samples containing 3% nanosilver particles and the control. The control sample showed lower concentration of the reducing sugar as compared to the samples containing 5 and 3% nanosilver particles while TSS values that are related to the ripening of the samples were different for all the samples examined.Conclusion: The samples packed with 5% nanosilver particles and kept for 53 days at 4UC showed better quality as compared to other samples.

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