Antimicrobial Effect of Nanocomposite Films Made of Cloisite30B- Metal Nanoparticle in Soy Burger

By: Faranak Beigmohammadi   Seyed Hadi Peighambardoust  

This study undertakes to investigate the ability of different kinds of nanocomposite films made of cloisite-30B with different percentages of silver and copper oxide nanoparticles incorporated into a low-density polyethylene (LDPE) polymeric matrix by a melt mixing method in order to inhibit the growth of microorganism in soy burger. The number of surviving cell of the total count was decreased by 3.61 log and mold & yeast diminished by 2.01 log after 8 weeks storage at 18 ± 0.5°C below zero, whilst pure LDPE did not has any antimicrobial effect. A composition of 1.3 % cloisite 30B-Ag and 2.7 % cloisite 30B-CuO for total count and 0 % cloisite 30B-Ag and 4 % cloisite 30B-CuO for yeast & mold gave optimum points in combined design test in Design Expert 7.1.5. Suitable microbial models were suggested for retarding above microorganisms growth in soy burger. To validation of optimum point, the difference between the optimum point of nanocomposite film and its repeat was not significant (p<0.05) by one-way ANOVA analysis using SPSS 17.0 software, while the difference was significant for pure film. Migration of metallic nanoparticles into a food stimulant was within the accepted safe level.

"Active Packaging", " Antimicrobial"
Food Production and Sustainability
Paper Presentation in a Themed Session

Dr. Faranak Beigmohammadi

-, -, Islamic Azad Univerity, Iran
-, Iran

I am a faculty member of Islamic Azad University, my major in PhD.D. is food technology and my dissertation in PhD.D. was about nanocomposite films based on LDPE in packaging of food.I published several papers in this field. I like this field and I like edible films for food packaging, too.

Dr. Seyed Hadi Peighambardoust

He is a professor of Food Science and Technology expert inCereal Science. He is beginning researches about active packaging of food, too.