1
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Babolanimogadam N, Akhondzadeh Basti A, Khanjari A, Sajjadi Alhashem SH, Babolani Moghadgam K, Ahadzadeh S. Shelf life extending of probiotic beef patties with polylactic acid-ajwain essential oil films and stress effects on Bacillus coagulans. J Food Sci 2024; 89:866-880. [PMID: 38193159 DOI: 10.1111/1750-3841.16864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 01/10/2024]
Abstract
Meat and meat products are prone to the microbial and chemical spoilage, due to the high nutritional content. This study investigated the effect of polylactic acid (PLA) films incorporated with ajwain essential oil (AEO) on microbial (total viable count [TVC], psychrotrophic bacterial count [PTC], Enterobacteriaceae, Pseudomonas spp., yeast and mold (Y&M), and also Bacillus coagulans [BCG]), chemical (pH, peroxide value [PV], thiobarbituric acid-reactive substance [TBARS], and TVN values), and sensorial properties of beef patties, as well as survivability of BCG during refrigerated storage. Results showed that all microbial counts of samples were significantly increased, except BCG, during storage but the lowest TVC of samples was achieved in samples wrapped with PLA-1% AEO (8 log colony forming units per gram [CFU/g]) at 12th of storage, which is significantly lower than control treatments (10.66 log CFU/g). The best results in all treatments are those wrapped by PLA-1% AEO in all evaluated characteristics. At the final day of storage, PTC (8.82 log CFU/g), Enterobacteriaceae (5.05 log CFU/g), Pseudomonas spp. (9.08 log CFU/g), Y&M (4.69 log CFU/g), and also pH (4.5), PV (5.12 meq/kg), TBARS (2.92 MDA/kg), and TVN (14.43 mgN/100 g) values of PLA-1% AEO treatments were significantly lower than control samples. AEO-PLA films reduce the survival of BCG in raw patties, which reached 6.19 log CFU/g in PLA-1% AEO treatments, although increasing the concentration of AEO in packaging PLA films led to the maintenance of BCG viability during the cooking process by increasing the AEO in PLA films. Overall, results showed shelf life of beef patties is extended 3 days more (150%) by wrapping with PLA films incorporated with 1% AEO.
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Affiliation(s)
- Nima Babolanimogadam
- Department of Food Hygiene, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
- Department of Food Science and Technology, Islamic Azad University, Science and Research Branch, Tehran, Iran
| | | | - Ali Khanjari
- Department of Food Hygiene, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | | | - Kimiya Babolani Moghadgam
- Department of Agronomy and Plant Breeding, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Sara Ahadzadeh
- Department of Pharmacology and Toxicology, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
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2
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He X, Zhang F, Li C, Ding W, Jin Y, Tang L, Huang R. Effect of Starch Plasticization on Morphological, Mechanical, Crystalline, Thermal, and Optical Behavior of Poly(butylene adipate-co-terephthalate)/Thermoplastic Starch Composite Films. Polymers (Basel) 2024; 16:326. [PMID: 38337215 DOI: 10.3390/polym16030326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 02/12/2024] Open
Abstract
Starches plasticized with glycerol/citric acid/stearic acid and tributyl 2-acetylcitrate (ATBC), respectively, were processed with poly (butylene adipate-Co-terephthalate (PBAT) via extrusion and a film-blown process. All the composite films were determined for morphology, mechanical, thermal stability, crystalline, and optical properties. Results show that the most improved morphology was in the 30% glycerol plasticized PBAT/thermoplastic starch (TPS) composite films, characterized by the smallest and narrowest distribution of TPS particle sizes and a more uniform dispersion of TPS particles. However, the water absorption of PBAT/TPS composite films plasticized with glycerol surpassed that observed with ATBC as a plasticizer. Mechanical properties indicated insufficient plasticization of the starch crystal structure when using 10% ATBC, 20% ATBC, and 20% glycerol as plasticizers, leading to poor compatibility between PBAT and TPS. This resulted in stress concentration points under external forces, adversely affecting the mechanical properties of the composites. All PBAT/TPS composite films exhibited a negative impact on the initial thermal decomposition temperature compared to PBAT. Additionally, the haze value of PBAT/TPS composite films exceeded 96%, while pure PBAT had a haze value of 47.42%. Films plasticized with 10% ATBC, 20% ATBC, and 20% glycerol displayed lower transmittance values in the visible light region. The increased transmittance of films plasticized with 30% glycerol further demonstrated their superior plasticizing effect compared to other PBAT/TPS composite films. This study provides a simple and feasible method for preparing low-cost PBAT composites, and their extensions are expected to further replace general-purpose plastics in daily applications.
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Affiliation(s)
- Xiaoyan He
- Department of Material Science and Engineering, Taizhou Institute of Zhejiang University, Taizhou 318000, China
| | - Fuhong Zhang
- Sanmen Megatron Tech. Co., Ltd., Taizhou 318000, China
| | - Congcong Li
- Center for Biotechnology and Biomedical Engineering, Yiwu Research Institute of Fudan University, Yiwu 322000, China
| | - Weiwei Ding
- Sanmen Megatron Tech. Co., Ltd., Taizhou 318000, China
| | - Yuanyuan Jin
- Department of Material Science and Engineering, Taizhou Institute of Zhejiang University, Taizhou 318000, China
| | - Lisheng Tang
- Department of Material Science and Engineering, Taizhou Institute of Zhejiang University, Taizhou 318000, China
| | - Ran Huang
- Department of Material Science and Engineering, Taizhou Institute of Zhejiang University, Taizhou 318000, China
- Academy for Engineering and Applied Technology, Fudan University, Shanghai 200433, China
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3
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Kervran M, Shabanian M, Vagner C, Ponçot M, Meier-Haack J, Laoutid F, Gaan S, Vahabi H. Flame retardancy of sustainable polylactic acid and polyhydroxybutyrate (PLA/PHB) blends. Int J Biol Macromol 2023; 251:126208. [PMID: 37567537 DOI: 10.1016/j.ijbiomac.2023.126208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/03/2023] [Accepted: 08/05/2023] [Indexed: 08/13/2023]
Abstract
Nowadays, development of new biobased/biodegradable polymers from biological resources is of great interest from a sustainability standpoint. Polyhydroxybutyrate (PHB) and polylactic acid (PLA) are two biopolymers obtained from renewable resources. In this study, the flame-retardant effect of a newly developed flame retardant (FR) based on melamine in a PLA/PHB blend was studied. Several combinations containing this new FR combined with ammonium polyphosphate (APP) and sepiolite were introduced in a PLA/PHB blend. 20 wt% of FR were introduced into a matrix containing 75 wt% PLA and 25 wt% PHB blended with a microcompounder. According to pyrolysis combustion flow calorimeter (PCFC) analyses, all the FR formulations exhibited reduced flammability. The results revealed a considerable decrease in the peak of heat release rate (pHRR) by 33 % in the presence of the new FR while a reduction of about 60 % for combinations with APP and sepiolite. The new FR system significantly enhanced the fire behaviour of PLA/PHB blend. The work presents the first cone calorimeter analyses of PLA/PHB composites. The fire behaviour evolved from thin sample to a thick charring behaviour highlighted by an increase of the residue after cone calorimeter from 0 to 14.7 % with this FR system.
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Affiliation(s)
- M Kervran
- Université de Lorraine, CentraleSupélec, LMOPS, F-57000 Metz, France
| | - M Shabanian
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany
| | - C Vagner
- Université de Lorraine, CentraleSupélec, LMOPS, F-57000 Metz, France
| | - M Ponçot
- Université de Lorraine, CNRS, IJL, F-54000 Nancy, France
| | - J Meier-Haack
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, D-01069 Dresden, Germany
| | - F Laoutid
- Polymeric and Composite Materials Unit, Materia Nova Research Center, University of Mons UMONS, Mons, Belgium
| | - S Gaan
- Laboratory of Advanced Fibers, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - H Vahabi
- Université de Lorraine, CentraleSupélec, LMOPS, F-57000 Metz, France.
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Ahmed W, Al-Marzouqi AH, Nazir MH, Rizvi TA, Zaneldin E, Khan M, Aziz M. Investigating the Properties and Characterization of a Hybrid 3D Printed Antimicrobial Composite Material Using FFF Process: Innovative and Swift. Int J Mol Sci 2023; 24:ijms24108895. [PMID: 37240240 DOI: 10.3390/ijms24108895] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 04/28/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Novel strategies and materials have gained the attention of researchers due to the current pandemic, the global market high competition, and the resistance of pathogens against conventional materials. There is a dire need to develop cost-effective, environmentally friendly, and biodegradable materials to fight against bacteria using novel approaches and composites. Fused filament fabrication (FFF), also known as fused deposition modeling (FDM), is the most effective and novel fabrication method to develop these composites due to its various advantages. Compared to metallic particles alone, composites of different metallic particles have shown excellent antimicrobial properties against common Gram-positive and Gram-negative bacteria. This study investigates the antimicrobial properties of two sets of hybrid composite materials, i.e., Cu-PLA-SS and Cu-PLA-Al, are made using copper-enriched polylactide composite, one-time printed side by-side with stainless steel/PLA composite, and second-time with aluminum/PLA composite respectively. These materials have 90 wt.% of copper, 85 wt.% of SS 17-4, 65 wt.% of Al with a density of 4.7 g/cc, 3.0 g/cc, and 1.54 g/cc, respectively, and were fabricated side by side using the fused filament fabrication (FFF) printing technique. The prepared materials were tested against Gram-positive and Gram-negative bacteria such as Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), Pseudomonas aeruginosa (P. aeruginosa), Salmonella Poona (S. Poona), and Enterococci during different time intervals (5 min, 10 min, 20 min, 1 h, 8 h, and 24 h). The results revealed that both samples showed excellent antimicrobial efficiency, and 99% reduction was observed after 10 min. Hence, three-dimensional (3D) printed polymeric composites enriched with metallic particles can be utilized for biomedical, food packaging, and tissue engineering applications. These composite materials can also provide sustainable solutions in public places and hospitals where the chances of touching surfaces are higher.
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Affiliation(s)
- Waleed Ahmed
- Engineering Requirements Unit, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Ali H Al-Marzouqi
- Department of Chemical and Petroleum Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Muhammad Hamza Nazir
- Department of Chemical and Petroleum Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Tahir A Rizvi
- Department of Microbiology & Immunology, College of Medicine & Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Zayed Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Essam Zaneldin
- Department of Civil and Environmental Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Mushtaq Khan
- Department of Microbiology & Immunology, College of Medicine & Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Zayed Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Muthanna Aziz
- Department of Mechanical Engineering, College of Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
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Vidal CP, Velásquez E, Gavara R, Hernández-Muñoz P, Muñoz-Shugulí C, José Galotto M, de Dicastillo CL. Modeling the release of an antimicrobial agent from multilayer film containing coaxial electrospun polylactic acid nanofibers. J FOOD ENG 2023. [DOI: 10.1016/j.jfoodeng.2023.111524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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6
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Goetjes V, von Boyneburgk CL, Heim HP, Horn MM. Influence of Chitosan and Grape Seed Extract on Thermal and Mechanical Properties of PLA Blends. Polymers (Basel) 2023; 15:polym15061570. [PMID: 36987350 PMCID: PMC10051302 DOI: 10.3390/polym15061570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Blends based on polylactic acid (PLA), chitosan, and grape seed extract (GE) were prepared by extrusion and injection molding. The effect of chitosan (5% and 15% on PLA basis) and natural extract (1% on PLA basis) incorporated into the PLA host matrix was explored regarding the thermal and mechanical properties. GE showed antioxidant activity, as determined by the DPPH assay method. Chitosan and GE affect the degree of crystallinity up to 30% as the polysaccharide acts as a nucleating agent, while the extract reduces the mobility of PLA chains. The decomposition temperature was mainly affected by adding chitosan, with a reduction of up to 25 °C. The color of the blends was specially modified after the incorporation of both components, obtaining high values of b* and L* after the addition of chitosan, while GE switched to high values of a*. The elongation at break (EB) exhibited that the polysaccharide is mainly responsible for its reduction of around 50%. Slight differences were accessed in tensile strength and Young's modulus, which were not statistically significant. Blends showed increased irregularities in their surface appearance, as observed by SEM analysis, corresponding to the partial miscibility of both polymers.
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Affiliation(s)
- Victoria Goetjes
- Institute of Material Engineering, Polymer Engineering, University of Kassel, Mönchebergstr. 3, 34125 Kassel, Germany
| | - Claudia L von Boyneburgk
- Institute of Material Engineering, Polymer Engineering, University of Kassel, Mönchebergstr. 3, 34125 Kassel, Germany
| | - Hans-Peter Heim
- Institute of Material Engineering, Polymer Engineering, University of Kassel, Mönchebergstr. 3, 34125 Kassel, Germany
| | - Marilia M Horn
- Physical Chemistry of Nanomaterials, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinich-Plett Straße 40, 34109 Kassel, Germany
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7
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Villegas C, Martínez S, Torres A, Rojas A, Araya R, Guarda A, Galotto MJ. Processing, Characterization and Disintegration Properties of Biopolymers Based on Mater-Bi ® and Ellagic Acid/Chitosan Coating. Polymers (Basel) 2023; 15:polym15061548. [PMID: 36987328 PMCID: PMC10053201 DOI: 10.3390/polym15061548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/16/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
Among the most promising synthetic biopolymers to replace conventional plastics in numerous applications is MaterBi® (MB), a commercial biodegradable polymer based on modified starch and synthetic polymers. Actually, MB has important commercial applications as it shows interesting mechanical properties, thermal stability, processability and biodegradability. On the other hand, research has also focused on the incorporation of natural, efficient and low-cost active compounds into various materials with the aim of incorporating antimicrobial and/or antioxidant capacities into matrix polymers to extend the shelf life of foods. Among these is ellagic acid (EA), a polyphenolic compound abundant in some fruits, nuts and seeds, but also in agroforestry and industrial residues, which seems to be a promising biomolecule with interesting biological activities, including antioxidant activity, antibacterial activity and UV-barrier properties. The objective of this research is to develop a film based on commercial biopolymer Mater-Bi® (MB) EF51L, incorporating active coating from chitosan with a natural active compound (EA) at two concentrations (2.5 and 5 wt.%). The formulations obtained complete characterization and were carried out in order to evaluate whether the incorporation of the coating significantly affects thermal, mechanical, structural, water-vapor barrier and disintegration properties. From the results, FTIR analysis yielded identification, through characteristic peaks, that the type of MB used is constituted by three polymers, namely PLA, TPS and PBAT. With respect to the mechanical properties, the values of tensile modulus and tensile strength of the MB-CHI film were between 15 and 23% lower than the values obtained for the MB film. The addition of 2.5 wt.% EA to the CHI layer did not generate changes in the mechanical properties of the system, whereas a 5 wt.% increase in ellagic acid improved the mechanical properties of the CHI film through the addition of natural phenolic compounds at high concentrations. Finally, the disintegration process was mainly affected by the PBAT biopolymer, causing the material to not disintegrate within the times indicated by ISO 20200.
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Affiliation(s)
- Carolina Villegas
- Center for Packaging Innovation (LABEN), Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Technology Faculty, University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Sara Martínez
- Center for Packaging Innovation (LABEN), Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Technology Faculty, University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Alejandra Torres
- Center for Packaging Innovation (LABEN), Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Technology Faculty, University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Adrián Rojas
- Center for Packaging Innovation (LABEN), Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Technology Faculty, University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Rocío Araya
- Center for Packaging Innovation (LABEN), Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Technology Faculty, University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - Abel Guarda
- Center for Packaging Innovation (LABEN), Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Technology Faculty, University of Santiago de Chile (USACH), Santiago 9170201, Chile
| | - María José Galotto
- Center for Packaging Innovation (LABEN), Center for the Development of Nanoscience and Nanotechnology (CEDENNA), Technology Faculty, University of Santiago de Chile (USACH), Santiago 9170201, Chile
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Zhang Q, Zhai W, Cui L, Liu Y, Xie W, Yu Q, Luo H. Physicochemical properties and antibacterial activity of polylactic acid/starch acetate films incorporated with chitosan and tea polyphenols. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04691-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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9
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Pérez-Bassart Z, Martínez-Abad A, Reyes A, López-Rubio A, Fabra MJ. Ultrasound-treatment as a promising strategy to develop biodegradable films obtained from mushroom waste biomass. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2022.108174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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10
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Hosseini S, Kadivar M, Shekarchizadeh H, Abaee MS, Alsharif MA, Karevan M. Cold plasma treatment to prepare active polylactic acid/ethyl cellulose film using wheat germ peptides and chitosan. Int J Biol Macromol 2022; 223:1420-1431. [PMID: 36395951 DOI: 10.1016/j.ijbiomac.2022.11.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/26/2022] [Accepted: 11/11/2022] [Indexed: 11/15/2022]
Abstract
In this study, the surface of the polylactic acid/ethyl cellulose (PLA/EC) blend film was modified by dielectric barrier discharge (DBD) plasma treatment to facilitate the spin-coating of chitosan (CH) and wheat germ bioactive peptides (PEP) obtained from enzymatic hydrolysis of defatted wheat germ protein isolate on the surface of the film. The suitable plasma treatment condition was 5 min at 20 kV according to ATR-FTIR, AFM, SEM, water angle contact, and water solubility results. Increasing the surface roughness and oxygen-containing functional groups (CO and -OH) improved coating by PEP and CH. The PEP-coated film had better antioxidant activity than CH-PEP and CH-coated films. The results of antimicrobial activity demonstrated that PEP-coated film could reduce the growth of gram-negative bacteria (Escherichia coli) and gram-positive bacteria (Staphylococcus aureus). The PEP-coated film had competitive antibacterial properties with CH-coated. Hence, the obtained PEP-coated PLA/EC film could be a promising candidate for antioxidant and antibacterial food packaging.
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Affiliation(s)
- Samane Hosseini
- Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Mahdi Kadivar
- Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Hajar Shekarchizadeh
- Department of Food Science and Technology, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Mohammad Saeed Abaee
- Department of Organic Chemistry and Natural Products, Chemistry and Chemical Engineering Research Center of Iran, Km 17 Tehran-Karaj Highway, Pajohesh Blvd, Tehran, Iran.
| | - Mohammad Ali Alsharif
- Department of Textile Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Mehdi Karevan
- Department of Mechanical Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
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11
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Assessment of the Antibiofilm Performance of Chitosan-Based Surfaces in Marine Environments. Int J Mol Sci 2022; 23:ijms232314647. [PMID: 36498973 PMCID: PMC9741481 DOI: 10.3390/ijms232314647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/19/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022] Open
Abstract
Marine biofouling is a natural process often associated with biofilm formation on submerged surfaces, creating a massive economic and ecological burden. Although several antifouling paints have been used to prevent biofouling, growing ecological concerns emphasize the need to develop new and environmentally friendly antifouling approaches such as bio-based coatings. Chitosan (CS) is a natural polymer that has been widely used due to its outstanding biological properties, including non-toxicity and antimicrobial activity. This work aims to produce and characterize poly (lactic acid) (PLA)-CS surfaces with CS of different molecular weight (Mw) at different concentrations for application in marine paints. Loligo opalescens pens, a waste from the fishery industry, were used as a CS source. The antimicrobial activity of the CS and CS-functionalized surfaces was assessed against Cobetia marina, a model proteobacterium for marine biofouling. Results demonstrate that CS targets the bacterial cell membrane, and PLA-CS surfaces were able to reduce the number of culturable cells up to 68% compared to control, with this activity dependent on CS Mw. The antifouling performance was corroborated by Optical Coherence Tomography since PLA-CS surfaces reduced the biofilm thickness by up to 36%, as well as the percentage and size of biofilm empty spaces. Overall, CS coatings showed to be a promising approach to reducing biofouling in marine environments mimicked in this work, contributing to the valorization of fishing waste and encouraging further research on this topic.
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Glinka M, Filatova K, Kucińska-Lipka J, Šopík T, Domincová Bergerová E, Mikulcová V, Wasik A, Sedlařík V. Antibacterial Porous Systems Based on Polylactide Loaded with Amikacin. Molecules 2022; 27:molecules27207045. [PMID: 36296639 PMCID: PMC9609933 DOI: 10.3390/molecules27207045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/14/2022] [Accepted: 10/16/2022] [Indexed: 11/16/2022] Open
Abstract
Three porous matrices based on poly(lactic acid) are proposed herein for the controlled release of amikacin. The materials were fabricated by the method of spraying a surface liquid. Description is given as to the possibility of employing a modifier, such as a silica nanocarrier, for prolonging the release of amikacin, in addition to using chitosan to improve the properties of the materials, e.g., stability and sorption capacity. Depending on their actual composition, the materials exhibited varied efficacy for drug loading, as follows: 25.4 ± 2.2 μg/mg (matrices with 0.05% w/v of chitosan), 93 ± 13 μg/mg (with 0.08% w/v SiO2 amikacin modified nanoparticles), and 96 ± 34 μg/mg (matrices without functional additives). An in vitro study confirmed extended release of the drug (amikacin, over 60 days), carried out in accordance with the mathematical Kosmyer–Pepas model for all the materials tested. The matrices were also evaluated for their effectiveness in inhibiting the growth of bacteria such as Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa. Concurrent research was conducted on the transdermal absorption, morphology, elemental composition, and thermogravimetric properties of the released drug.
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Affiliation(s)
- Marta Glinka
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 G. Narutowicza Street, 80-233 Gdańsk, Poland
| | - Katerina Filatova
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Tomáše Bati 5678 Street, 760 01 Zlín, Czech Republic
| | - Justyna Kucińska-Lipka
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, 11/12 G. Narutowicza Street, 80-233 Gdańsk, Poland
| | - Tomáš Šopík
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Tomáše Bati 5678 Street, 760 01 Zlín, Czech Republic
| | - Eva Domincová Bergerová
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Tomáše Bati 5678 Street, 760 01 Zlín, Czech Republic
| | - Veronika Mikulcová
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Tomáše Bati 5678 Street, 760 01 Zlín, Czech Republic
| | - Andrzej Wasik
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 G. Narutowicza Street, 80-233 Gdańsk, Poland
- Correspondence:
| | - Vladimir Sedlařík
- Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Tomáše Bati 5678 Street, 760 01 Zlín, Czech Republic
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13
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Salazar R, Salas-Gomez V, Alvarado AA, Baykara H. Preparation, Characterization and Evaluation of Antibacterial Properties of Polylactide-Polyethylene Glycol-Chitosan Active Composite Films. Polymers (Basel) 2022; 14:polym14112266. [PMID: 35683938 PMCID: PMC9183075 DOI: 10.3390/polym14112266] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 02/01/2023] Open
Abstract
Chitin is a natural biopolymer obtained from the exoskeleton of crustaceans. Chitosan is a derivative of chitin, which has antimicrobial properties and potential applications in several industries. Moreover, the composites of chitosan with other biodegradable polymers, such as polylactide (PLA) as packaging film, have shown promising results. In this study, chitosan was obtained and characterized from shrimp shells. Then, polylactide-chitosan composite films were prepared by a solvent casting technique using various amounts of chitosan (0.5–2% w/w) and polyethylene glycol as plasticizer (10% w/w). Thermal, mechanical properties, Fourier-transform infrared, scanning electron microscopy, as well as antibacterial properties of composite films were determined. It was found that adding chitosan (CH) into PLA films has a significant effect on tensile strength and no effect on thermal properties. The results showed a reduction on average of 1 log of colony-forming units against Staphylococcus aureus, while there is no antibacterial effect against Salmonella typhimurium. The study proved the antibacterial effect of CH in films of PLA against Gram-positive bacteria and appropriate mechanical properties. These films could be used for the development of biodegradable/eco-friendly food packaging prototypes, as a potential solution to replace conventional non-degradable packaging materials.
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Affiliation(s)
- Rómulo Salazar
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ingeniería en Mecánica y Ciencias de la Producción, Campus Gustavo Galindo, Km 30.5 Vía Perimetral, P.O. BOX 09-01-5863, Guayaquil 090902, Ecuador;
- Correspondence: (R.S.); (H.B.)
| | - Veronica Salas-Gomez
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ingeniería en Mecánica y Ciencias de la Producción, Campus Gustavo Galindo, Km 30.5 Vía Perimetral, P.O. BOX 09-01-5863, Guayaquil 090902, Ecuador;
| | - Adriana A. Alvarado
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ciencias Naturales y Matemáticas, Departamento de Química y Ciencias Ambientales, Campus Gustavo Galindo, Km 30.5 Vía Perimetral, Guayaquil 090902, Ecuador;
| | - Haci Baykara
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ingeniería en Mecánica y Ciencias de la Producción, Campus Gustavo Galindo, Km 30.5 Vía Perimetral, P.O. BOX 09-01-5863, Guayaquil 090902, Ecuador;
- Escuela Superior Politécnica del Litoral, ESPOL, Center of Nanotechnology Research and Development (CIDNA), Campus Gustavo Galindo, Km 30.5 Vía Perimetral, P.O. BOX 09-01-5863, Guayaquil 090902, Ecuador
- Correspondence: (R.S.); (H.B.)
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Hernández-García E, Vargas M, Torres-Giner S. Quality and Shelf-Life Stability of Pork Meat Fillets Packaged in Multilayer Polylactide Films. Foods 2022; 11:foods11030426. [PMID: 35159576 PMCID: PMC8833934 DOI: 10.3390/foods11030426] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/21/2022] [Accepted: 01/26/2022] [Indexed: 02/04/2023] Open
Abstract
In the present study, the effectiveness of a multilayer film of polylactide (PLA), fully bio-based and compostable, was ascertained to develop a novel sustainable packaging solution for the preservation of fresh pork meat. To this end, the multilayer PLA films were first characterized in terms of their thermal characteristics, structure, mechanical performance, permeance to water and aroma vapors and oxygen, and optical properties and, for the first time, compared with two commercial high-barrier multilayer packaging films. Thereafter, the multilayers were thermosealed to package fillets of fresh pork meat and the physicochemical changes, lipid oxidation levels, and microbiological counts were monitored in the food samples during storage under refrigeration conditions. Results showed that the meat fillets packaged in PLA developed a redder color and showed certain indications of dehydration and oxidation, being more noticeably after 11 days of storage, due to the higher water vapor and oxygen permeance values of the biopolymer multilayer. However, the pH changes and bacterial growth in the cold-stored fresh pork meat samples were minimal and very similar in the three tested multilayer films, successfully accomplishing the requirements of the food quality and safety standards at the end of storage.
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15
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Rodrigues R, Patil S, Dhakane‐Lad J, Nadanathangam V, Mahapatra A. Effect of green tea extract, ginger essential oil and nanofibrillated cellulose reinforcements in starch films on the keeping quality of strawberries. J FOOD PROCESS PRES 2022. [DOI: 10.1111/jfpp.16109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Renette Rodrigues
- Department of Food Science & Technology, D. Y. Patil School of Biotechnology and Bioinformatics Navi Mumbai India
| | - Sharmila Patil
- Quality Evaluation and Improvement Division ICAR‐Central Institute for Research on Cotton Technology Mumbai India
| | - Jyoti Dhakane‐Lad
- Technology Transfer Division ICAR‐Central Institute for Research on Cotton Technology Mumbai India
| | - Vigneshwaran Nadanathangam
- Chemical and Biochemical Processing Division ICAR‐Central Institute for Research on Cotton Technology Mumbai India
| | - Archana Mahapatra
- Technology Transfer Division ICAR‐Central Institute for Research on Cotton Technology Mumbai India
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16
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17
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Kulkarni A, Narayan R. Effects of Modified Thermoplastic Starch on Crystallization Kinetics and Barrier Properties of PLA. Polymers (Basel) 2021; 13:polym13234125. [PMID: 34883628 PMCID: PMC8659831 DOI: 10.3390/polym13234125] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/22/2021] [Accepted: 11/22/2021] [Indexed: 11/16/2022] Open
Abstract
This study reports on using reactive extrusion (REX) modified thermoplastic starch particles as a bio-based and biodegradable nucleating agent to increase the rate of crystallization, percent crystallinity and improve oxygen barrier properties while maintaining the biodegradability of PLA. Reactive blends of maleated thermoplastic starch (MTPS) and PLA were prepared using a ZSK-30 twin-screw extruder; 80% glycerol was grafted on the starch during the preparation of MTPS as determined by soxhlet extraction with acetone. The crystallinity of PLA was found to increase from 7.7% to 28.6% with 5% MTPS. The crystallization temperature of PLA reduced from 113 °C to 103 °C. Avrami analysis of the blends showed that the crystallization rate increased 98-fold and t1/2 was reduced drastically from 20 min to <1 min with the addition of 5% MTPS compared to neat PLA. Observation from POM confirmed that the presence of MTPS in the PLA matrix significantly increased the rate of formation and density of spherulites. Oxygen and water vapor permeabilities of the solvent-casted PLA/MTPS films were reduced by 33 and 19% respectively over neat PLA without causing any detrimental impacts on the mechanical properties (α = 0.05). The addition of MTPS to PLA did not impact the biodegradation of PLA in an aqueous environment.
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18
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Applications of Nisin and EDTA in Food Packaging for Improving Fabricated Chitosan-Polylactate Plastic Film Performance and Fish Fillet Preservation. MEMBRANES 2021; 11:membranes11110852. [PMID: 34832081 PMCID: PMC8618303 DOI: 10.3390/membranes11110852] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 10/29/2021] [Accepted: 11/01/2021] [Indexed: 11/28/2022]
Abstract
This study aimed to increase the antibacterial activity of chitosan-polylactic acid (PLA) composite film by adding nisin and ethylenediaminetetraacetic acid (EDTA). We evaluated the mechanical, physicochemical, and antibacterial properties of various PLA composite films, as well as the enhancement effect of PLA composite films with EDTA + nisin on the preservation of grouper fillets. Films of PLA alone, PLA plus chitosan (C5), PLA plus nisin + EDTA (EN2), and PLA plus chitosan plus nisin + EDTA (C5EN1 and C5EN2) were prepared. The addition of EDTA + nisin to the chitosan-PLA matrix significantly improved the antibacterial activity of the PLA composite film, with C5EN1 and C5EN2 films showing the highest antibacterial activity among the five films. Compared with the fish samples covered by C5, the counts of several microbial categories (i.e., mesophilic bacteria, psychrotrophic bacteria, coliforms, Aeromonas, Pseudomonas, and Vibrio) and total volatile basic nitrogen content in fish were significantly reduced in the samples covered by C5EN1. In addition, the counts of samples covered by C5EN1 or C5 were significantly lower compared to the uncovered and PLA film-covered samples.
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Tanjung FA, Arifin Y, Kuswardani RA. Influence of Newly Organosolv Lignin-Based Interface Modifier on Mechanical and Thermal Properties, and Enzymatic Degradation of Polylactic Acid/Chitosan Biocomposites. Polymers (Basel) 2021; 13:polym13193355. [PMID: 34641170 PMCID: PMC8512308 DOI: 10.3390/polym13193355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 09/26/2021] [Accepted: 09/27/2021] [Indexed: 01/10/2023] Open
Abstract
This article aimed to study the effects of chitosan fiber and a newly modifying agent, based on organosolv lignin, on mechanical and thermal performances and the enzymatic degradation of PLA/chitosan biocomposites. A newly modifying agent based on polyacrylic acid-grafted organosolv lignin (PAA-g-OSL) was synthesized via free radical copolymerization using t-butyl peroxide as the initiator. The biocomposites were prepared using an internal mixer and the hot-pressed method at various fiber loadings. The results demonstrate that the addition of chitosan fiber into PLA biocomposites remarkably decreases tensile strength and elongation at break. However, it improves the Young's modulus. The modified biocomposites clearly demonstrat an improvement in tensile strength by approximately 20%, with respect to the unmodified ones, upon the presence of PAA-g-OSL. Moreover, the thermal stability of the modified biocomposites was enhanced significantly, indicating the effectiveness of the thermal protective barrier of the lignin's aromatic structure belonging to the modifying agent during pyrolysis. In addition, a slower biodegradation rate was exhibited by the modified biocomposites, relative to the unmodified ones, that confirms the positive effects of their improved interfacial interaction, resulting in a decreased area that was degraded through enzyme hydrolysis.
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Affiliation(s)
- Faisal Amri Tanjung
- Faculty of Science and Technology, Universitas Medan Area, Medan 20223, North Sumatera, Indonesia
- Correspondence: or ; Tel.: +61-7360-168
| | - Yalun Arifin
- Department of Food Business Technology, Universitas Prasetiya Mulya, BSD Raya Utama, Tangerang 15339, Banten, Indonesia;
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Demina TS, Akopova TA, Zelenetsky AN. Materials Based on Chitosan and Polylactide: From Biodegradable Plastics to Tissue Engineering Constructions. POLYMER SCIENCE SERIES C 2021. [DOI: 10.1134/s1811238221020028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
The transition to green chemistry and biodegradable polymers is a logical stage in the development of modern chemical science and technology. In the framework of this review, the advantages, disadvantages, and potential of biodegradable polymers of synthetic and natural origin are compared using the example of polylactide and chitosan as traditional representatives of these classes of polymers, and the possibilities of their combination via obtaining composite materials or copolymers are assessed. The mechanochemical approach to the synthesis of graft copolymers of chitosan with oligolactides/polylactides is considered in more detail.
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21
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Shakour N, Khoshkhoo Z, Basti AA, Khanjari A, Shotorbani PM. Integration of nanochitosan and Ziziphora clinopodioides essential oil into poly lactic acid films; a new method for extending the shelf life of Oncorhynchus mykiss fillets. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-020-00779-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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The Effect of Molecular Weight on the Antimicrobial Activity of Chitosan from Loligo opalescens for Food Packaging Applications. Mar Drugs 2021; 19:md19070384. [PMID: 34356809 PMCID: PMC8303414 DOI: 10.3390/md19070384] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/25/2021] [Accepted: 06/28/2021] [Indexed: 12/30/2022] Open
Abstract
The growing requirement for sustainable processes has boosted the development of biodegradable plastic-based materials incorporating bioactive compounds obtained from waste, adding value to these products. Chitosan (Ch) is a biopolymer that can be obtained by deacetylation of chitin (found abundantly in waste from the fishery industry) and has valuable properties such as biocompatibility, biodegradability, antimicrobial activity, and easy film-forming ability. This study aimed to produce and characterize poly(lactic acid) (PLA) surfaces coated with β-chitosan and β-chitooligosaccharides from a Loligo opalescens pen with different molecular weights for application in the food industry. The PLA films with native and depolymerized Ch were functionalized through plasma oxygen treatment followed by dip-coating, and their physicochemical properties were assessed by Fourier-transform infrared spectroscopy, X-ray diffraction, water contact angle, and scanning electron microscopy. Their antimicrobial properties were assessed against Escherichia coli and Pseudomonas putida, where Ch-based surfaces reduced the number of biofilm viable, viable but nonculturable, and culturable cells by up to 73%, 74%, and 87%, respectively, compared to PLA. Biofilm growth inhibition was confirmed by confocal laser scanning microscopy. Results suggest that Ch films of higher molecular weight had higher antibiofilm activity under the food storage conditions mimicked in this work, contributing simultaneously to the reuse of marine waste.
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Biodegradable Antimicrobial Films for Food Packaging: Effect of Antimicrobials on Degradation. Foods 2021; 10:foods10061256. [PMID: 34205937 PMCID: PMC8228111 DOI: 10.3390/foods10061256] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/14/2021] [Accepted: 05/28/2021] [Indexed: 12/25/2022] Open
Abstract
The environmental problem generated by the massive consumption of plastics makes necessary the developing of biodegradable antimicrobial materials that can extend food shelf-life without having a negative impact on the environment. The current situation regarding the availability of biodegradable food packaging materials has been analysed, as well as different studies where antimicrobial compounds have been incorporated into the polymer matrix to control the growth of pathogenic or spoilage bacteria. Thus, the antimicrobial activity of active films based on different biodegradable polymers and antimicrobial compounds has been discussed. Likewise, relevant information on biodegradation studies carried out with different biopolymers in different environments (compost, soil, aquatic), and the effect of some antimicrobials on this behavior, are reviewed. In most of the studies, no relevant effect of the incorporated antimicrobials on the degradation of the polymer were observed, but some antimicrobials can delay the process. The changes in biodegradation pattern due to the presence of the antimicrobial are attributed to its influence on the microorganism population responsible for the process. More studies are required to know the specific influence of the antimicrobial compounds on the biodegradation behavior of polymers in different environments. No studies have been carried out or marine media to this end.
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Suryanegara L, Fatriasari W, Zulfiana D, Anita SH, Masruchin N, Gutari S, Kemala T. Novel antimicrobial bioplastic based on PLA-chitosan by addition of TiO 2 and ZnO. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2021; 19:415-425. [PMID: 34150245 PMCID: PMC8172708 DOI: 10.1007/s40201-021-00614-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
PURPOSE The purpose of this study was to develop antimicrobial bioplastics based on Poly Lactic Acid (PLA) with the addition of chitosan-ZnO, and chitosan-TiO2 to improve antimicrobial properties. METHODS For the preparation of the bioplastics, PLA with chitosan-ZnO or chitosan-TiO2 were used. The antimicrobial activity, mechanical and thermal properties, and water vapor permeability of bioplastics were evaluated. RESULTS PLA-chitosan-ZnO indicated a robust antimicrobial activity against bacteria such as Salmonella typhi, Bacillus subtilis, Escherichia coli, Staphylococcus aureus, yeast such as Candida albicans, and fungus Aspergillus niger. No formation of new functional groups in PLA-chitosan-ZnO composites. In comparison to other PLA-based bioplastics, this bioplastic has medium tensile strength, tensile modulus, and elongation percentages with low barrier ability to water vapor. Chitosan-ZnO itself has a greater tensile strength compared to chitosan-TiO2. These two compounds undergo 2 stages of decomposition in a temperature range of 43 °C to 265 °C. The addition of PLA into chitosan-ZnO or chitosan TiO2 causes the bioplastics decomposed in a single stage. It also increases the decomposition temperature of bioplastic. However, compared to chitosan-ZnO or TiO2, the PLA-chitosan-ZnO or TiO2 bioplastics tend to produce a fragile composite indicating by decrease in their tensile strength. CONCLUSION In general, the addition of chitosan-ZnO into in PLA-based bioplastic produces better antimicrobial properties compared to TiO2.
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Affiliation(s)
- Lisman Suryanegara
- Research Center for Biomaterials, Indonesian Institute of Sciences (LIPI), Jl Raya Bogor KM 46, Bogor, Cibinong 16911 Indonesia
| | - Widya Fatriasari
- Research Center for Biomaterials, Indonesian Institute of Sciences (LIPI), Jl Raya Bogor KM 46, Bogor, Cibinong 16911 Indonesia
| | - Deni Zulfiana
- Research Center for Biomaterials, Indonesian Institute of Sciences (LIPI), Jl Raya Bogor KM 46, Bogor, Cibinong 16911 Indonesia
| | - Sita Heris Anita
- Research Center for Biomaterials, Indonesian Institute of Sciences (LIPI), Jl Raya Bogor KM 46, Bogor, Cibinong 16911 Indonesia
| | - Nanang Masruchin
- Research Center for Biomaterials, Indonesian Institute of Sciences (LIPI), Jl Raya Bogor KM 46, Bogor, Cibinong 16911 Indonesia
| | - Sesmi Gutari
- Departement of Chemistry, Faculty of Mathematics and Natural Sciences, IPB University, Bogor, Indonesia
| | - Tetty Kemala
- Departement of Chemistry, Faculty of Mathematics and Natural Sciences, IPB University, Bogor, Indonesia
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PLA-Based Materials Containing Bio-Plasticizers and Chitosan Modified with Rosehip Seed Oil for Ecological Packaging. Polymers (Basel) 2021; 13:polym13101610. [PMID: 34067539 PMCID: PMC8156353 DOI: 10.3390/polym13101610] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/19/2021] [Accepted: 05/14/2021] [Indexed: 12/15/2022] Open
Abstract
Several recipes based on PLA, bio-plasticizers, and active agents such as vitamin E and cold-pressed rosehip seed oil encapsulated into chitosan by the emulsion method named here as chitosan modified (CS-M) were elaborated by melt compounding for food packaging applications. Resulted biocomposites have been investigated from the point of view of physical-mechanical, thermal, barrier, antimicrobial, and antioxidant properties to select the formulations with the optimum features to produce food trays and films for packaging applications. The obtained results showed that the elaborated formulations exhibit tensile strength and flexibility dependent on their composition being either rigid or flexible, as well as antimicrobial and antioxidant activity, which will potentially lead to prolonged use for food packaging. The recipe with PLA matrix and 40:60 Lapol®108 as masterbarch/polyethylene glycol (MB/PEG) bio-plasticizers ratio was distinguished by an improvement of over 100 times in terms of flexibility compared with neat PLA, while the highest antioxidant activity (36.27%) was recorded for the sample containing a CS-M and MB/PEG ratio of 60:40. An enhancement of ~50% for the water vapor barrier was recorded for PLA/CS-M_100:0 material. By modulating the MB and PEG bio-plasticizers ratio, the design of new eco-friendly food packaging materials with antimicrobial/antioxidant characteristics by using the existing technologies for processing synthetic polymers (melt mixing, compounding, pressing, thermoforming) has been successfully realized.
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Beltrán FR, Gaspar G, Dadras Chomachayi M, Jalali-Arani A, Lozano-Pérez AA, Cenis JL, de la Orden MU, Pérez E, Martínez Urreaga JM. Influence of addition of organic fillers on the properties of mechanically recycled PLA. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:24291-24304. [PMID: 32043250 DOI: 10.1007/s11356-020-08025-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 02/06/2020] [Indexed: 05/20/2023]
Abstract
Poly(lactic acid) (PLA) is one of the most used biobased and biodegradable polymers. Due to their high stability, some of the newest grades of PLA are only degradable under severe industrial conditions. For these grades, mechanical recycling is a viable end-of-life option, with great environmental advantages. However, the polymer undergoes degradation during its service life and in the melt reprocessing, which leads to a decrease in properties that can compromise the recyclability of PLA. The goal of this work was to evaluate the usefulness of adding small amounts of two organic fillers, chitosan, and silk fibroin nanoparticles, during the recycling process for improving the properties of the recycled plastic. The degradation level of the aged polymer and the nature and amount of filler affect the performance of the recycled plastics. The fillers reduce the degradation during the melt reprocessing of PLA previously subjected to severe hydrolysis, thus increasing the intrinsic viscosity of the recycled plastic. A careful selection of the added organic filler lead to recycled plastics with improvements in some key mechanical, thermal, and barrier properties. Thus, the use of organic fillers represents a cost-effective and environmentally sound way for improving the mechanical recycling of bioplastics.
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Affiliation(s)
- Freddys R Beltrán
- Dpto. Ingeniería Química Industrial y Medio Ambiente, Universidad Politécnica de Madrid, E.T.S.I. Industriales, 28006, Madrid, Spain
- Grupo de Investigación: Polímeros, Caracterización y Aplicaciones (POLCA, Associated Unit to CSIC), Madrid, Spain
| | - Gerald Gaspar
- Dpto. Ingeniería Química Industrial y Medio Ambiente, Universidad Politécnica de Madrid, E.T.S.I. Industriales, 28006, Madrid, Spain
| | | | - Azam Jalali-Arani
- Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran
| | - Antonio A Lozano-Pérez
- Dpto. Biotecnología, Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA), 30150, Murcia, Spain
| | - José L Cenis
- Dpto. Biotecnología, Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA), 30150, Murcia, Spain
| | - María U de la Orden
- Grupo de Investigación: Polímeros, Caracterización y Aplicaciones (POLCA, Associated Unit to CSIC), Madrid, Spain
- Dpto. de Química Orgánica I, Facultad de Óptica y Optometría, Universidad Complutense de Madrid, 28037, Madrid, Spain
| | - Ernesto Pérez
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, 28006, Madrid, Spain
| | - Joaquín M Martínez Urreaga
- Dpto. Ingeniería Química Industrial y Medio Ambiente, Universidad Politécnica de Madrid, E.T.S.I. Industriales, 28006, Madrid, Spain.
- Grupo de Investigación: Polímeros, Caracterización y Aplicaciones (POLCA, Associated Unit to CSIC), Madrid, Spain.
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Thermoprocessed starch-polyester bilayer films as affected by the addition of gellan or xanthan gum. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106509] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Antibacterial Activity of Chitosan-Polylactate Fabricated Plastic Film and Its Application on the Preservation of Fish Fillet. Polymers (Basel) 2021; 13:polym13050696. [PMID: 33669080 PMCID: PMC7956300 DOI: 10.3390/polym13050696] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/19/2021] [Accepted: 02/23/2021] [Indexed: 12/11/2022] Open
Abstract
This research prepared chitosan–PLA plastic films by extrusion, analyzed the physical and mechanical properties and antibacterial activity of the fabricated plastic films, and used them to preserve grouper fillet. We added chitosan (220 kDa, 93% DD) in the weight ratio of 0.5–2% into the PLA to prepare the chitosan–PLA films. With the increasing chitosan dosage, both the water vapor transmission rate and moisture content of chitosan–PLA films increased. Among the three doses of chitosan (0.5%, 1%, and 2%) added to PLA, 0.5% chitosan–PLA film had the highest antibacterial activity. This plastic film had an inhibitory efficiency of over 95% against Escherichia coli, Pseudomonas fluorescens, and Staphylococcus aureus. The action of covering the fish fillet with 0.5% chitosan–PLA film significantly reduced several microbes’ counting (i.e., mesophiles, psychrophiles, coliforms, Pseudomonas, Aeromonas, and Vibrio) and total volatile basic nitrogen (TVBN) value in the grouper fillets stored at 4 °C. Thus, such action prolongs the fish fillets’ shelf life to up to at least nine days, and this 0.5% chitosan–PLA film shows promising potential for preserving refrigerated fish.
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Rodriguez Llanos JH, Tadini CC, Gastaldi E. New strategies to fabricate starch/chitosan-based composites by extrusion. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2020.110224] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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The Quantitative Nanomechanical Mapping of Starch/Kaolin Film Surfaces by Peak Force AFM. Polymers (Basel) 2021; 13:polym13020244. [PMID: 33445773 PMCID: PMC7828257 DOI: 10.3390/polym13020244] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 01/08/2021] [Accepted: 01/08/2021] [Indexed: 11/17/2022] Open
Abstract
Starch films modified with additives are materials increasingly being used in the production of packaging. These types of biopolymers can, to a considerable degree, replace plastic, contributing to the reduction in both production and waste management costs. However, they should be characterised by specific mechanical and surface parameters which determine their application. In the presented work, the PeakForce Quantitative Nanomechanics Mapping (PFQNM) method was applied to analyse a starch-based biopolymer modified with two different kaolin clay contents (5% and 10%). The technique used facilitates the assessment of the correlation of Atomic Force Microscope AFM height parameters with nanomechanical ones which provide the definitions of mutual interactions and allow the possibility to analyse materials in respect of various details. The investigated material was mapped in the Derjaguin-Muller-Toporov (DMT) modulus, adhesion and height domains. The results obtained indicated the impact of additives on the determined parameters. Increases in the DMT modulus and the adhesion force, along with the kaolin content, were observed. The enhancement of starch films with kaolin clay also induced growth in the surface roughness parameters.
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Chitosan nanoparticles based on their derivatives as antioxidant and antibacterial additives for active bioplastic packaging. Carbohydr Polym 2021; 257:117610. [PMID: 33541641 DOI: 10.1016/j.carbpol.2020.117610] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 12/23/2020] [Accepted: 12/30/2020] [Indexed: 02/07/2023]
Abstract
Chitosan nanoparticles (CSNPs) based on their different derivatives were proposed as antioxidant and antimicrobial additives for active bioplastic packaging. Chitosan was modified with polyethylene glycol methyl ether methacrylate (PEGMA), stearyl methacrylate (SMA) and deoxycholic acid (DC) using radiation-induced graft polymerization and chemical conjugation. The modified CSNPs-g-pPEGMA, CSNPs-g-pSMA and CSNPs-DC self-assembled into nanoparticles with the size in the range of 25-60 nm. The CSNPs-DC derivative has superior antioxidant activity and the CSNPs-g-pSMA derivative exhibited outstanding antibacterial activity against growth of E.coli (95.33 %). All modified CSNPs showed their capacities to inhibit S.aureus bacterial growth (>98 %). PLA packaging films containing CSNPs-g-pSMA inhibited the growth of natural microorganism on bread slices. Different chemical functions of the CSNPs derivatives provided different gas permeability and mechanical properties of the PLA films. The CSNPs derivatives would be promising antioxidant and antimicrobial additives for bioplastics to be further used as bio-based active food packaging.
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32
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Development of Poly(L-Lactic Acid)/Chitosan/Basil Oil Active Packaging Films via a Melt-Extrusion Process Using Novel Chitosan/Basil Oil Blends. Processes (Basel) 2021. [DOI: 10.3390/pr9010088] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Following the global trend toward a cyclic economy, the development of a fully biodegradable active packaging film is the target of this work. An innovative process to improve the mechanical, antioxidant, and barrier properties of Poly(L-Lactic Acid)/Chitosan films is presented using essential basil oil extract. A Chitosan/Basil oil blend was prepared via a green evaporation/adsorption method as a precursor for the development of the Poly(L-Lactic Acid)/Chitosan/Basil Oil active packaging film. This Chitosan/Basil Oil blend was incorporated directly in the Poly(L-Lactic Acid) matrix with various concentrations. Modification of the chitosan with the Basil Oil improves the blending with the Poly(L-Lactic Acid) matrix via a melt-extrusion process. The obtained Poly(L-Lactic Acid)/Chitosan/Basil Oil composite films exhibited advanced food packaging properties compared to those of the Poly(L-Lactic Acid)/Chitosan films without Basil Oil addition. The films with 5%wt and 10%wt Chitosan/Basil Oil loadings exhibited better thermal, mechanical, and barrier behavior and significant antioxidant activity. Thus, PLLA/CS/BO5 and PLLA/CS/BO10 are the most promising films to potentially be used for active packaging applications.
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33
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Dey A, Dhumal CV, Sengupta P, Kumar A, Pramanik NK, Alam T. Challenges and possible solutions to mitigate the problems of single-use plastics used for packaging food items: a review. Journal of Food Science and Technology 2020; 58:3251-3269. [PMID: 34366444 DOI: 10.1007/s13197-020-04885-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 10/22/2020] [Accepted: 10/28/2020] [Indexed: 11/26/2022]
Abstract
Single-use plastic (SUP) being a versatile material, is adopted as an alternate to traditional materials specifically for the use in food packaging due to its inherent characteristics like high durability, inertness, and protecting ability but has become a curse for living being today due to its random usage and unplanned rejection to nature. Mostly plastics used in packaging of beverages, fresh meats, fruits and vegetables are under concern today. Single-use packages result in generation of several billion tons of garbage till date, which pollutes the environment. At the immediate past, it has come to light that micro plastics obtained due to slow degradation of SUP present in oceans, are also being consumed by marine organisms such as fishes and shellfish species which disturbs the marine life extensively. Hence, finding right strategy to mitigate the plastic waste related issues has becoming inevitable today. This review paper briefs various strategies undertaken worldwide to mitigate the pollution due to generation of plastic waste. Various notable impact of adopted strategies and recent innovations to replace the SUP products are also discussed and in view of this a roadmap is also suggested which can be used to achieve the milestone of Zero Plastic Waste.
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Affiliation(s)
- Ayan Dey
- Indian Institute of Packaging, Plot E-2 M.I.D.C. Area, Andheri East, Mumbai, 400093 Maharashtra India
| | - Chanda Vilas Dhumal
- Indian Institute of Packaging, Plot E-2 M.I.D.C. Area, Andheri East, Mumbai, 400093 Maharashtra India
| | - Priyanka Sengupta
- Indian Institute of Packaging, Plot E-2 M.I.D.C. Area, Andheri East, Mumbai, 400093 Maharashtra India
| | - Arushi Kumar
- Indian Institute of Packaging, Plot E-2 M.I.D.C. Area, Andheri East, Mumbai, 400093 Maharashtra India
| | - Nilay Kanti Pramanik
- Indian Institute of Packaging, Plot E-2 M.I.D.C. Area, Andheri East, Mumbai, 400093 Maharashtra India
| | - Tanweer Alam
- Indian Institute of Packaging, Plot E-2 M.I.D.C. Area, Andheri East, Mumbai, 400093 Maharashtra India
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34
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Thermal behavior and water absorption kinetics of polylactic acid/chitosan biocomposites. IRANIAN POLYMER JOURNAL 2020. [DOI: 10.1007/s13726-020-00879-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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35
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Aziman N, Abdullah N, Bujang A, Mohd Noor Z, Abdul Aziz A, Ahmad R. Phytochemicals of ethanolic extract and essential oil of
Persicaria hydropiper
and their potential as antibacterial agents for food packaging polylactic acid film. J Food Saf 2020. [DOI: 10.1111/jfs.12864] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nurain Aziman
- Malaysia Institute of Transport (MITRANS) Universiti Teknologi MARA Shah Alam Selangor Malaysia
| | - Noriham Abdullah
- Malaysia Institute of Transport (MITRANS) Universiti Teknologi MARA Shah Alam Selangor Malaysia
- School of Industrial Technology, Faculty of Applied Sciences Universiti Teknologi MARA Shah Alam Selangor Malaysia
| | - Aishah Bujang
- Malaysia Institute of Transport (MITRANS) Universiti Teknologi MARA Shah Alam Selangor Malaysia
- School of Industrial Technology, Faculty of Applied Sciences Universiti Teknologi MARA Shah Alam Selangor Malaysia
| | - Zainon Mohd Noor
- School of Biology, Faculty of Applied Sciences Universiti Teknologi MARA Shah Alam Selangor Malaysia
| | - Aziyah Abdul Aziz
- School of Biology, Faculty of Applied Sciences Universiti Teknologi MARA Shah Alam Selangor Malaysia
| | - Rohaya Ahmad
- School of Chemistry and Environment, Faculty of Applied Sciences Universiti Teknologi MARA Shah Alam Selangor Malaysia
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36
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Tabatabaee Bafroee AS, Khanjari A, Teimourifard R, Yarmahmoudi F. Development of a novel active packaging film to retain quality and prolong the shelf life of fresh minced lamb meat. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.14880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Ali Khanjari
- Departments of Food Hygiene and Microbiology Faculty of Veterinary Medicine University of Tehran Tehran Iran
| | - Reza Teimourifard
- Departments of Food Hygiene and Microbiology Faculty of Veterinary Medicine University of Tehran Tehran Iran
| | - Fatemeh Yarmahmoudi
- Departments of Food Hygiene and Microbiology Faculty of Veterinary Medicine University of Tehran Tehran Iran
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37
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Physicochemical, antioxidant and antimicrobial properties of mechanically deboned chicken meat protein films enriched with various essential oils. Food Packag Shelf Life 2020. [DOI: 10.1016/j.fpsl.2020.100527] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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38
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Antibacterial chitosan electrostatic/covalent coating onto biodegradable poly ( -lactic acid). Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105835] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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39
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Dou X, Li Q, Wu Q, Duan L, Zhou S, Zhang Y. Effects of lactic acid and mixed acid aqueous solutions on the preparation, structure and properties of thermoplastic chitosan. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109850] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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41
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Li S, Chen G, Qiang S, Yin Z, Zhang Z, Chen Y. Synthesis and evaluation of highly dispersible and efficient photocatalytic TiO 2/poly lactic acid nanocomposite films via sol-gel and casting processes. Int J Food Microbiol 2020; 331:108763. [PMID: 32574819 DOI: 10.1016/j.ijfoodmicro.2020.108763] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/24/2020] [Accepted: 06/09/2020] [Indexed: 12/18/2022]
Abstract
Using titanium teraisopropoxide (TTIP) as the hydrolysis material, titanium dioxide (TiO2) (6.3-11.1 nm) nanoparticles were synthesized via the sol-gel method and reinforced into poly lactic acid (PLA)/TiO2 nanocomposite films by casting. The effect of increasing amounts of TiO2 on the structure and properties of PLA/TiO2 nanocomposite films were evaluated. These results indicated that self-aggregation of TiO2 nanoparticles in PLA films could be avoided via sol-gel and casting processes. The presence of TiO2 significantly improved the tensile strength and thermal stability of films. The PLA/TiO2 (0.6 wt%) film exhibited the highest photocatalytic activity efficiency under UV irradiation and displayed high antibacterial activities with optimal inhibition zones of Staphylococcus aureus, followed by Escherichia dispersibility of TiO2 in films were responsible for those improvements. This study suggests that PLA/TiO2 nanocomposite films could be a promising antimicrobial alternative material to conventional plastic packages.
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Affiliation(s)
- Shuhong Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, No. 29, No. 13 Ave., TEDA, Tianjin 300457, China
| | - Guiyun Chen
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, No. 29, No. 13 Ave., TEDA, Tianjin 300457, China
| | - Siqi Qiang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, No. 29, No. 13 Ave., TEDA, Tianjin 300457, China
| | - Zhonglin Yin
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, No. 29, No. 13 Ave., TEDA, Tianjin 300457, China
| | - Zhenya Zhang
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Ye Chen
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science & Technology, No. 29, No. 13 Ave., TEDA, Tianjin 300457, China.
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42
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Javaherzadeh R, Tabatabaee Bafroee A, Kanjari A. Preservation effect of Polylophium involucratum essential oil incorporated poly lactic acid/ nanochitosan composite film on shelf life and sensory properties of chicken fillets at refrigeration temperature. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108783] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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43
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Rogovina SZ, Aleksanyan KV, Vladimirov LV, Berlin AA. Biodegradable Polymer Materials Based on Polylactide. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2019. [DOI: 10.1134/s1990793119050099] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Modulating the properties of polylactic acid for packaging applications using biobased plasticizers and naturally obtained fillers. Int J Biol Macromol 2019; 153:1165-1175. [PMID: 31756463 DOI: 10.1016/j.ijbiomac.2019.10.246] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/23/2019] [Accepted: 10/26/2019] [Indexed: 11/24/2022]
Abstract
The properties of PLA films intended for packaging applications have been modulated by using bio-based platicizers and naturally obtained fillers. Triethyl citrate (TEC) and glycerol triacetate (GTA) have been used as platicizers and halloysite nanotubes (HNT) and chitosan have been used as fillers. The addition of 10 wt% TEC, 10 wt% GTA and 3 wt% HNT improves the ductility of PLA films, however, reduces the tensile modulus and tensile strength. Addition of chitosan (1 wt%), on the other hand, acts as a good reinforcing filler and improves the tensile strength and tensile modulus. PLA-HNT-chitosan film show comparable tensile strength, tensile modulus and ~12 times higher elongation at break compared to pure PLA. Besides, PLA-HNT-chitosan film demonstrates very good barrier properties against moisture and ultraviolet (UV) rays. Additionally, its antibacterial efficacy against E. coli and S. aureus are found to be around 80% and 70%, respectively. The study demonstrates the complementary effects of HNT and chitosan to modulate the properties of PLA film and indicates that the PLA-HNT-chitosan film can emerge as a very potent material for packaging applications.
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45
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The Production Possibility of the Antimicrobial Filaments by Co-Extrusion of the PLA Pellet with Chitosan Powder for FDM 3D Printing Technology. Polymers (Basel) 2019; 11:polym11111893. [PMID: 31744085 PMCID: PMC6918339 DOI: 10.3390/polym11111893] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/10/2019] [Accepted: 11/14/2019] [Indexed: 01/21/2023] Open
Abstract
The last decades have witnessed a major advancement and development in three-dimensional (3D) printing technology. In the future, the trend’s utilization of 3D printing is expected to play an important role in the biomedical field. This work presents co-extrusion of the polylactic acid (PLA), its derivatives (sPLA), and chitosan with the aim of achieving filaments for printing 3D objects, such as biomedical tools or implants. The physicochemical and antimicrobial properties were evaluated using SEM, FT-IR, DSC, instrumental mechanical test, and based on the ASTM E2149 standard, respectively. The addition of chitosan in the PLA and sPLA filaments increased their porosity and decreased density. The FT-IR analysis showed that PLA and chitosan only formed a physical mixture after extrusion. The addition of chitosan caused deterioration of the mechanical properties of filaments, especially elongation at break and Young’s modulus. The addition of chitosan to the filaments improved their ability to crystallize and provide their antimicrobial properties against Escherichia coli and Staphylococcus aureus.
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46
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Cacicedo ML, Pacheco G, Islan GA, Alvarez VA, Barud HS, Castro GR. Chitosan-bacterial cellulose patch of ciprofloxacin for wound dressing: Preparation and characterization studies. Int J Biol Macromol 2019; 147:1136-1145. [PMID: 31739047 DOI: 10.1016/j.ijbiomac.2019.10.082] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 08/23/2019] [Accepted: 10/08/2019] [Indexed: 01/07/2023]
Abstract
Biopolymeric blends based on bacterial cellulose (BC) films modified with low molecular weight chitosan (Chi) were developed for controlled release of ciprofloxacin (Cip). Biophysical studies revealed a compatible and cooperative network between BC and Chi including deep structural changes in the BC matrix shown by spectroscopic and thermal analyses (SEM, roughness analysis, FTIR, XRD, TGA, mechanical properties and water vapor transmission rate). Incorporation of chitosan to BC matrix generated a thickening scaffold with high permeability to water vapor from 0.7 to 3.2 g mm/m2 h. Cip loaded onto the BC-Chi film showed a hyperbolic release profile with a 30% decrease in antibiotic release mediated by the presence of Chi. BC-Chi blend films containing Cip tested against Pseudomonas aeruginosa and Staphylococcus aureus showed a synergic effect of chitosan on Cip antimicrobial activity. Besides, in vitro studies revealed the lack of cytotoxicity of BC-Chi-Cip films in human fibroblasts.
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Affiliation(s)
- Maximiliano L Cacicedo
- Laboratorio de Nanobiomateriales, CINDEFI, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CONICET (CCT La Plata), Calle 47 y 115, B1900AJL La Plata, Argentina
| | - Guilherme Pacheco
- Universidade de Araraquara (UNIARA) - Laboratório de Biopolímeros e Biomateriais (BioPolMat), Rua Carlos Gomes 1217, 14.801-320, Araraquara, SP, Brazil
| | - German A Islan
- Laboratorio de Nanobiomateriales, CINDEFI, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CONICET (CCT La Plata), Calle 47 y 115, B1900AJL La Plata, Argentina
| | - Vera A Alvarez
- CoMP (Grupo de Materiales Compuestos), Instituto de investigación en Ciencia y Tecnología de Materiales (INTEMA) (CONICET, UNMdP), Solís 7575, B7608FDQ Mar del Plata, Argentina
| | - Hernane S Barud
- Universidade de Araraquara (UNIARA) - Laboratório de Biopolímeros e Biomateriais (BioPolMat), Rua Carlos Gomes 1217, 14.801-320, Araraquara, SP, Brazil
| | - Guillermo R Castro
- Laboratorio de Nanobiomateriales, CINDEFI, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CONICET (CCT La Plata), Calle 47 y 115, B1900AJL La Plata, Argentina.
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47
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Wang Y, Li R, Lu R, Xu J, Hu K, Liu Y. Preparation of Chitosan/Corn Starch/Cinnamaldehyde Films for Strawberry Preservation. Foods 2019; 8:E423. [PMID: 31546929 PMCID: PMC6769845 DOI: 10.3390/foods8090423] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/14/2019] [Accepted: 09/18/2019] [Indexed: 01/17/2023] Open
Abstract
In this study, the casting method was used to make chitosan (CS)/corn starch/cinnamaldehyde film, and the preservation performance of the film was examined. The results showed that the tensile strength of the film can reach to 31.24 ± 0.22 MPa when the mass ratios of CS, corn starch, and glycerin were 2.5%, 7%, and 0.5% respectively. The addition of cinnamaldehyde made the films have great inhibitory effect on Botrytis cinerea, Rhizopus, and Escherichia coli. In particular, the film had a significant fresh-keeping effect on strawberries, which reduced the loss of nutritional value, when aiming at soluble solids, titratable acid value, weight loss rate, and other indexes of strawberries. Thus, the films can slow down the physiological changes of strawberries and extend their shelf life to 11 days. Therefore, this work demonstrates the noteworthy potential of these novel films, incorporating natural antimicrobial compounds as innovative solutions to be used in active food packaging to extend the shelf-life of food products.
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Affiliation(s)
- Yue Wang
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
| | - Rui Li
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
| | - Rui Lu
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
| | - Jie Xu
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
| | - Ke Hu
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
| | - Yaowen Liu
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
- California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA.
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48
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Synthesis of poly(ε-caprolactone)-grafted guar gum by surface-initiated ring-opening polymerization. Carbohydr Polym 2019; 220:95-102. [DOI: 10.1016/j.carbpol.2019.05.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/14/2019] [Accepted: 05/14/2019] [Indexed: 11/22/2022]
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49
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Rogovina SZ, Prut EV, Aleksanyan KV, Krasheninnikov VG, Perepelitsina EO, Shashkin DP, Berlin AA. Composites Based on Starch and Polylactide. POLYMER SCIENCE SERIES B 2019. [DOI: 10.1134/s1560090419030114] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Li W, Sun Q, Mu B, Luo G, Xu H, Yang Y. Poly(l-lactic acid) bio-composites reinforced by oligo(d-lactic acid) grafted chitosan for simultaneously improved ductility, strength and modulus. Int J Biol Macromol 2019; 131:495-504. [DOI: 10.1016/j.ijbiomac.2019.03.098] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/10/2019] [Accepted: 03/15/2019] [Indexed: 12/16/2022]
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