Optimization of antibacterial and mechanical properties of an active LDPE/starch/nanoclay nanocomposite film incorporated with date palm seed extract using D-optimal mixture design approach

Ramin Radfar; Hedayat Hosseini; Mehdi Farhodi; Ismail Ghasemi; Dominika Średnicka-Tober; Ehsan Shamloo; Amin Mousavi Khaneghah

doi:10.1016/j.ijbiomac.2020.04.139

Optimization of antibacterial and mechanical properties of an active LDPE/starch/nanoclay nanocomposite film incorporated with date palm seed extract using D-optimal mixture design approach

Int J Biol Macromol. 2020 May 4:S0141-8130(20)33003-8. doi: 10.1016/j.ijbiomac.2020.04.139. Online ahead of print.

Authors

Ramin Radfar¹, Hedayat Hosseini², Mehdi Farhodi³, Ismail Ghasemi⁴, Dominika Średnicka-Tober⁵, Ehsan Shamloo⁶, Amin Mousavi Khaneghah⁷

Affiliations

¹ Department of Food Science and Technology, Faculty of Nutrition Sciences, Food Science and Technology/National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Agricultural and Food Policy, Agricultural Planning and Economics Researches Institute (APERI), Tehran, Iran.
² Department of Food Science and Technology, Faculty of Nutrition Sciences, Food Science and Technology/National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Food Safety Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address: hedayat@sbmu.ac.ir.
³ Department of Food Science and Technology, Faculty of Nutrition Sciences, Food Science and Technology/National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic address: farhoodi@sbmu.ac.ir.
⁴ Department of Plastics, Iran Polymer and Petrochemical Institute (IPPI), Tehran, Iran.
⁵ Department of Functional and Organic Food, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences, Nowoursynowska 159c, 02-776 Warsaw, Poland.
⁶ Department of Food Science and Technology, Faculty of Nutrition Sciences, Food Science and Technology/National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
⁷ Department of Food Science, Faculty of Food Engineering, University of Campinas, Campinas, Sao Paulo, Brazil.

PMID: 32380104
DOI: 10.1016/j.ijbiomac.2020.04.139

Abstract

A novel active LDPE/TPS nanocomposite films containing date palm seed extracts (Kabkab variety) were developed using D-optimal mixture design. 20 different blends of components including LDPE, TPS, Cloisite 20A, PE-g-MA, EDTA and date palm seed extracts in different proportions were prepared. Using trace and counter plots the effects of each component on the mechanical and antibacterial properties of the composites were studied. The results showed that the films containing a mixture of date seed extract and EDTA had notable antibacterial activity against E. coli and S. aureus; however, these components weakened the mechanical properties of the prepared films. At the same time Cloisite 20A nanoparticles strengthened the films mechanical properties. The optimized formulation for the overall best antibacterial and mechanical properties was 67.5 wt% for LDPE, 4.1 wt% for date seed extract, 2.8 wt% for Cloisite 20A and 2.5 wt% for EDTA. The studied properties of the manufactured film samples were close to the values predicted by the model.

Keywords: Antibacterial properties; D-optimal mixture design; Date palm seed; Mechanical properties.