Highly Efficient Antifogging and Antibacterial Food Packaging Film Fabricated by Novel Quaternary Ammonium Chitosan Composite

Publication date: Available online 19 October 2019Source: Food ChemistryAuthor(s): Tiantian Min, Zhu Zhu, Xiaoli Sun, Zhipeng Yuan, Junwei Zha, Yongqiang WenAbstractIn this work, a multifunctional food packaging composite coating with transparent, biodegradable, antifogging and antibacterial properties was designed and fabricated by quaternary ammonium salt modified chitosan (HACC) and poly (vinyl alcohol) (PVA) via a facile and environment-friendly solution casting method. A simple quaternization modification enabled the coating simultaneously to achieve excellent antifogging and antibacterial functions. The excellent antifogging property of the HACC/PVA composite coating was attributed to the strong water absorbency of quaternary ammonium chitosan and PVA. A nearly 98 % transmittance ratio of coated glasses was achieved during antifogging test. In addition, the inhibition rate of the HACC/PVA composite coating kill against Escherichia coli (E. coli), Staphylococcus aureus (S. aureus) and Botrytis cinerea were up to~99 %. The antibacterial effect was demonstrated by each group of strawberries after storage for 1, 3, 5 days. The multifunctional coating has broad prospects in the application of fruit and vegetable packaging.Graphical abstract
Source: Food Chemistry - Category: Food Science Source Type: research

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Publication date: Available online 16 November 2019Source: Carbohydrate PolymersAuthor(s): Hossein Rahmani, Seyed Heydar Mahmoudi Najafi, Alireza Ashori, Marzieh Arab Fashapoyeh, Farzaneh Aziz Mohseni, Sara TorkamanAbstractIn this research, biocomposite films containing chitosan (CS), polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP), with different ratios, have been provided. The effects of adding hexamethylene 1, 6-di(aminocarboxysulfonate) (HMDACS) as cross linker and the formation of urea linkage on mechanical properties such as tensile strength and elongation and dynamic-mechanical properties such as storage mod...
Source: Carbohydrate Polymers - Category: Biomedical Science Source Type: research
Abstract Recently, oxo-biodegradable polymers have attracted much attention due to taking less time to break down after disposal in comparison to ordinary polymers. Polyvinyl alcohol/gelatin (PVA/G) nanocomposite films, containing ZnO, TiO2 or ZnO/TiO2 nanoparticles supported on 4A zeolite (4A z), are novel active packaging that can control the release of antimicrobial compounds. The present study assessed the efficacy of PVA/G nanocomposite films with 1.5% (w/w) ZnO/4A z (treatment 1), 1.5% (w/w) TiO2/4A z (treatment 2), or 1% (w/w) ZnO, TiO2/4A z (treatment 3) in controlling the microbial load and maintaining th...
Source: International Journal of Food Microbiology - Category: Food Science Authors: Tags: Int J Food Microbiol Source Type: research
ez SA Abstract The antimicrobial activities of plant extracts have formed the basis of many alternative medicines. In this context, the genus Schinus L. (Anacardiaceae), exhibits many traditional uses in medicine. However, a few studies on the antimicrobial properties of Schinus areira essential oils were conducted. The essential oil from S. areira leaves from Santiago del Estero was obtained by hydrodistillation and twenty-eight compounds were identified using CG-MS-EI spectrometry. The sesquiterpenoid alcohol 1-epi-cadinol was the major compound, followed by δ-cadinene, alloaromadendrene, β-pinene, &b...
Source: Natural Product Research - Category: Biochemistry Authors: Tags: Nat Prod Res Source Type: research
Publication date: Available online 27 September 2019Source: Process BiochemistryAuthor(s): Suganya Bharathi Balakrishnan, Stalin ThambusamyAbstractBiocompatible silver-based nanofibrous frameworks have attracted intensive attention in wound dressing materials ascribed to their greater stability, minimal toxicity, excellent antibacterial activity, and extended therapeutic efficiency. The present investigation delineates a simple approach to synthesize silver nanoparticles (Ag NPs), and riboflavin (RF) decorated polyvinyl alcohol/β-Cyclodextrin (PVA/β-CD) electrospun nanofibrous scaffolds envisioning their applicat...
Source: Process Biochemistry - Category: Biochemistry Source Type: research
Publication date: Available online 18 September 2019Source: European Polymer JournalAuthor(s): Katarina Nešović, Ana Janković, Tamara Radetić, Maja Vukašinović-Sekulić, Vesna Kojić, Ljiljana Živković, Aleksandra Perić-Grujić, Kyong Yop Rhee, Vesna Mišković-StankovićAbstractIn this work, we provide a facile path for the preparation of wound dressing materials with improved characteristics based on biocompatible chitosan and poly(vinyl alcohol) hydrogels with embedded silver nanoparticles (AgNPs) as a potent antimicrobial agent. The hydrogels were prepared via freezing-thawing method, whereas...
Source: European Polymer Journal - Category: Chemistry Source Type: research
This study presents a ternary system of PVA films containing bacterial cellulose (BC) and epsilon-polylysine (ε-PL) by a green solution casting method. The prepared composite films showed more than 99% antibacterial properties against both Staphylococcus aureus and Escherichia coli bacteria. Moreover, the films were collected after a single use and were reused twice, which still exhibited strong antibacterial activity. The films showed thermal stability and higher mechanical properties as compared to pure PVA films. In addition, the cytotoxicity of the films was evaluated by MTT assay against NIH 3T3 mouse fibrobla...
Source: Colloids and Surfaces B: Biointerfaces - Category: Biochemistry Source Type: research
This study presents a ternary system of PVA films containing bacterial cellulose (BC) and epsilon-polylysine (ε-PL) by a green solution casting method. The prepared composite films showed more than 99% antibacterial properties against both Staphylococcus aureus and Escherichia coli bacteria. Moreover, the films were collected after a single use and were reused twice, which still exhibited strong antibacterial activity. The films showed thermal stability and higher mechanical properties as compared to pure PVA films. In addition, the cytotoxicity of the films was evaluated by MTT assay against NIH 3T3 mouse fibrobla...
Source: Colloids and Surfaces - Category: Biotechnology Authors: Tags: Colloids Surf B Biointerfaces Source Type: research
Publication date: September 2019Source: Food Packaging and Shelf Life, Volume 21Author(s): Kowsalya E, MosaChristas K, Balashanmugam P, Tamil Selvi A, Jaquline Chinna Rani IAbstractNanotechnology is expected to transform many areas of food science as there is a growing demand for increased fresh food shelf life as well as the need of protection against foodborne diseases, thus, urging for the development of antimicrobial food packaging using the polymer embedded metal nanoparticles. In the present study, the stable silver nanoparticles (AgNPs) were synthesized by a green route using Vitis vinifera (black grapes) fruit peel...
Source: Food Packaging and Shelf Life - Category: Food Science Source Type: research
Publication date: 1 December 2019Source: Food Chemistry, Volume 300Author(s): Jiefeng Pan, Fangmi Ai, Ping Shao, Hangjun Chen, Haiyan GaoAbstractUnder the optimal conditions, a crosslinked electrospun polyvinyl alcohol/cinnamon essential oil/β-cyclodextrin (CPVA-CEO-β-CD) nanofibrous films for sustained release of antimicrobials were successfully prepared. Cinnamon essential oil (CEO) can be sustainably released due to CPVA-CEO-β-CD nanofibers complex delivery systems. The chemical crosslinking and physical welding achieved simultaneously by glutaraldehyde atomization fumigation, making fibers more suitable ...
Source: Food Chemistry - Category: Food Science Source Type: research
A library of 14 nontoxic diterpenoid-like compounds (CC50> 70 µM on HepG2 human liver cells) was screened against Mycobacterium smegmatis, Staphylococcus aureus and Escherichia coli to determine antimicrobial activity. Some compounds with a phenethyl alcohol core substituted with a β-cyclocitral derivative demonstrated anti-mycobacterial activity, with the most active being compound 1 (MIC = 23.4 mg/L, IC50 = 0.6 mg/L). Lower activity was exhibited against S. aureus, while no activity was displayed against E. coli. Low cytotoxicity was confirmed on HepG2 cells and newly derived for RAW 264.7 murine macrophage...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
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