Title : ( Antimicrobial evaluation of novel poly-lactic acid based nanocomposites incorporated with bioactive compounds in-vitro and in refrigerated vacuum-packed cooked sausages )
Authors: MohammadReza Rezaeigolestani , Ali Misaghi , Ali Khanjari , Afshin Akhondzadeh Basti , Ali Abdulkhani , Samira Fayazfar ,Access to full-text not allowed by authors
Abstract
Biodegradability and antimicrobial activity of food packaging materials are among the most attractive para- meters in modern food industries. In order to develop biodegradable poly-lactic acid (PLA) film to antibacterial nanocomposites, different concentration of Zataria multiflora Bioss. essential oil (ZME), propolis ethanolic extract (PEE) and cellulose nanofiber (CNF) were incorporated to the polymer by solvent casting method. The resulting films were characterized by mechanical and physical tests and their antimicrobial application was evaluated in- vitro against four common foodborne pathogens and in vacuum-packed cooked sausages during refrigerated storage. Mechanical examination revealed that addition of ZME and PEE made films more flexible and in- corporation of CNF improved almost all mechanical parameters tested. Moreover, according to physical analysis, incorporation of 0.5% v/v ZME to the composite primary solutions improved water vapor permeability of the resulting films. Almost all of the active films were effective against the tested bacteria except for PLA/PEE films, and maximum antibacterial effects recorded for the films containing both ZME and PEE. Based on the micro- biological and sensory evaluation of the sausages, all of the PLA/1%ZME/PEE composites increased the shelf life to> 40 days. The results indicate that incorporation of natural antimicrobial substances such as ZME and PEE to packaging material could be an interesting approach in development of active packaging material without significant negative effect on polymer technical properties.
Keywords
Antibacterial Polylactic acid (PLA) Zataria multiflora Boiss. Propolis Food packaging Nanocellulose@article{paperid:1079112,
author = {Rezaeigolestani, MohammadReza and علی میثاقی and علی خنجری and افشین آخوندزاده and علی عبدالخانی and سمیرا فیاض فر},
title = {Antimicrobial evaluation of novel poly-lactic acid based nanocomposites incorporated with bioactive compounds in-vitro and in refrigerated vacuum-packed cooked sausages},
journal = {International Journal of Food Microbiology},
year = {2017},
volume = {260},
number = {1},
month = {November},
issn = {0168-1605},
pages = {1--10},
numpages = {9},
keywords = {Antibacterial Polylactic acid (PLA) Zataria multiflora Boiss. Propolis Food packaging Nanocellulose},
}
%0 Journal Article
%T Antimicrobial evaluation of novel poly-lactic acid based nanocomposites incorporated with bioactive compounds in-vitro and in refrigerated vacuum-packed cooked sausages
%A Rezaeigolestani, MohammadReza
%A علی میثاقی
%A علی خنجری
%A افشین آخوندزاده
%A علی عبدالخانی
%A سمیرا فیاض فر
%J International Journal of Food Microbiology
%@ 0168-1605
%D 2017