Anti-quorum sensing activity of AgCl-TiO2 nanoparticles with potential use as active food packaging material

2014 ◽  
Vol 117 (4) ◽  
pp. 972-983 ◽  
Author(s):  
K. Naik ◽  
M. Kowshik
2017 ◽  
Vol 63 ◽  
pp. 488-495 ◽  
Author(s):  
Danyxa Piñeros-Hernandez ◽  
Carolina Medina-Jaramillo ◽  
Alex López-Córdoba ◽  
Silvia Goyanes

2021 ◽  
Author(s):  
Ayca Aydogdu Emir ◽  
Eda Yildiz ◽  
Yıldırım Aydogdu ◽  
Gulum Sumnu ◽  
Serpil Sahin

Polymers ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 954 ◽  
Author(s):  
Rungsiri Suriyatem ◽  
Rafael Auras ◽  
Chitsiri Rachtanapun ◽  
Pornchai Rachtanapun

Active films from rice starch/carboxymethyl chitosan (RS/CMCh) incorporated with propolis extract (ppl) were developed and characterized. The effect of the ppl content (0–10% w/w based on RS/CMCh) on the developed films’ properties were determined by measuring the optical, mechanical, thermal, swelling, barrier, antimicrobial, and antioxidant attributes. The thermal stability and biodegradability of the films were also investigated. As the ppl content increased, free radical scavenging and a* and b* color values increased, whereas luminosity (L*) and swellability of the films decreased. The active films with 5–10% ppl possessed antimicrobial ability against Gram-positive bacteria (Staphylococcus aureus and Bacillus cereus). The active film with 10% ppl displayed increased flexibility and thermal stability, without a change in oxygen permeability. The results indicated that incorporation of ppl into RS/CMCh film could enhance the films’ antioxidant and antimicrobial properties.


2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Nasser A. Al-Shabib ◽  
Fohad Mabood Husain ◽  
Faheem Ahmed ◽  
Rais Ahmad Khan ◽  
Iqbal Ahmad ◽  
...  

Abstract Bacterial spoilage of food products is regulated by density dependent communication system called quorum sensing (QS). QS control biofilm formation in numerous food pathogens and Biofilms formed on food surfaces act as carriers of bacterial contamination leading to spoilage of food and health hazards. Agents inhibiting or interfering with bacterial QS and biofilm are gaining importance as a novel class of next-generation food preservatives/packaging material. In the present study, Zinc nanostructures were synthesised using Nigella sativa seed extract (NS-ZnNPs). Synthesized nanostructures were characterized hexagonal wurtzite structure of size ~24 nm by UV-visible, XRD, FTIR and TEM. NS-ZnNPs demonstrated broad-spectrum QS inhibition in C. violaceum and P. aeruginosa biosensor strains. Synthesized nanostructures inhibited QS regulated functions of C. violaceum CVO26 (violacein) and elastase, protease, pyocyanin and alginate production in PAO1 significantly. NS-ZnNPs at sub-inhibitory concentrations inhibited the biofilm formation of four-food pathogens viz. C. violaceum 12472, PAO1, L. monocytogenes, E. coli. Moreover, NS-ZnNPs was found effective in inhibiting pre-formed mature biofilms of the four pathogens. Therefore, the broad-spectrum inhibition of QS and biofilm by biogenic Zinc oxide nanoparticles and it is envisaged that these nontoxic bioactive nanostructures can be used as food packaging material and/or as food preservative.


Author(s):  
Sudip Ray ◽  
Siew Young Quek ◽  
Allan Easteal ◽  
Xiao Dong Chen

With today's advancement in nanotechnology, Polymer-Clay Nanocomposite has emerged as a novel food packaging material due to its several benefits such as enhanced mechanical, thermal and barrier properties. This article discusses the potential use of these polymer composites as novel food packaging materials with emphasis on preparation, characterization, properties, recent developments and future prospects.


Membranes ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 750
Author(s):  
Seok-In Hong ◽  
Youngjin Cho ◽  
Jong-Whan Rhim

Fresh beef loin was packaged with 0–2% silver nanoparticles (AgNPs) incorporated agar films to investigate the effect of antimicrobial packaging on meat quality changes in terms of microbiological and physicochemical properties. Raw beef cuts were directly inoculated with Listeria monocytogenes and Escherichia coli O157:H7 and stored in the air-sealed packages combined with the agar films at 5 °C for 15 days. Beef samples showed low susceptibility to the agar/AgNP composite films, resulting in about one log reduction of the inoculated pathogenic bacteria in viable cell count during storage. However, the composite films could partly prevent beef samples from directly contacting oxygen, maintaining the meat color and retarding oxidative rancidity. Experimental results suggested that the AgNP-incorporated agar films can potentially be applied in packaged raw meats as an active food packaging material to inhibit microbial and physicochemical quality deterioration during distribution and sale.


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