Effects of Water Concentration and Water Vapor Pressure on the Water Vapor Permeability and Diffusion of Chitosan Films

Chitosan is an abundant, natural polysaccaride obtained from fishing industry waste and films of chitosan also provide an efficient oxygen barrier. However, they are a poor water vapor barrier, which can be improved by incorporation of a hydrophobic compound, forming a emulsified film. Chitosan films were produced with the addition of palmitic acid lipid analysis and then the process in parallel with the diffusive permeability to water vapor. The objective of this work was to characterize the diffusion and water vapor permeability behavior of chitosan films and chitosan emulsified films.

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Physicochemical and Antioxidant Properties of Chitosan Films Incorporated with Cinnamon Oil

International Journal of Polymer Science ◽

10.1155/2015/974506 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 27

Author(s):

Marco A. López-Mata ◽

Saul Ruiz-Cruz ◽

Norma Patricia Silva-Beltrán ◽

José de Jesús Ornelas-Paz ◽

Víctor Manuel Ocaño-Higuera ◽

...

Keyword(s):

Water Vapor ◽

Antioxidant Properties ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Protective Effects ◽

Protective Capacity ◽

Cinnamon Oil ◽

Low Concentrations ◽

Yellow Coloration ◽

Chitosan Films

Chitosan films (CF) with cinnamon bark oil (CO) incorporated at 0% (control), 0.25%, 0.5%, and 1.0% v/v were prepared by an emulsion method. The films were characterized based on their physical properties (solubility, water vapor permeability, optical property, and microstructure) and antioxidant properties (DPPH, ABTS, and its protective effects on human erythrocytes). The results showed that the incorporation of 0.5 and 1.0% of CO into the CF significantly decreased its solubility to 22% of the control (p<0.05). The water vapor permeability of the CF-CO was significantly reduced to 40% with low concentrations of CO (0.25%) incorporated into the CF. In general, the films presented a yellow coloration and an increase in transparency with the incorporation of CO into the CF. It was also observed that the incorporation of CO increased the antioxidant activity between 6.0-fold and 14.5-fold compared to the control, and the protective capacity against erythrocyte hemolysis increased by as much as 80%.

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Characterization of Chitosan Film Incorporated with Curcumin Extract

Polymers ◽

10.3390/polym13060963 ◽

2021 ◽

Vol 13 (6) ◽

pp. 963

Author(s):

Pornchai Rachtanapun ◽

Warinporn Klunklin ◽

Pensak Jantrawut ◽

Kittisak Jantanasakulwong ◽

Yuthana Phimolsiripol ◽

...

Keyword(s):

Mechanical Properties ◽

Antioxidant Activity ◽

Infrared Spectroscopy ◽

Water Vapor ◽

Moisture Content ◽

Water Solubility ◽

Chitosan Film ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Chitosan Films

Curcumin is a phenolic compound derived from turmeric roots (Curcuma longa L.). This research studied the effects of curcumin extract on the properties of chitosan films. The film characteristics measured included mechanical properties, visual aspects, color parameters, light transmission, moisture content, water solubility, water vapor permeability, infrared spectroscopy, and antioxidant activity. The results suggest that adding curcumin to chitosan-based films increases yellowness and light barriers. Infrared spectroscopy analysis showed interactions between the phenolic compounds of the extract and the chitosan, which may have improved the mechanical properties and reduced the moisture content, water solubility, and water vapor permeability of the films. The antioxidant activity of the films increased with increasing concentrations of the curcumin extract. This study shows the potential benefits of incorporating curcumin extract into chitosan films used as active packaging.

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A PRELIMINARY STUDY OF THE VAPOR PERMEABILITY OF CELLOPHANE

Canadian Journal of Chemistry ◽

10.1139/v59-240 ◽

1959 ◽

Vol 37 (10) ◽

pp. 1655-1661 ◽

Cited By ~ 4

Author(s):

W. L. Archer ◽

S. G. Mason

Keyword(s):

Water Vapor ◽

Vapor Pressure ◽

Mass Flow Rate ◽

Sorption Isotherm ◽

Flow Rate ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Pressure Side ◽

Preliminary Study ◽

Adsorption Desorption

The water vapor permeability of cellophane was measured over adsorption–desorption cycles and was found to parallel the sorption isotherm. When a constant vapor pressure was applied on the low pressure side of the membrane, the mass flow rate was independent of the vapor pressure used and showed hysteresis on desorption. The permeabilities of methanol, ethanol, and benzene were found to increase with increasing vapor pressure.

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Preparation and Characterization of Bioactive Chitosan-Based Films Incorporated with Olive Leaves Extract for Food Packaging Applications

Coatings ◽

10.3390/coatings11111339 ◽

2021 ◽

Vol 11 (11) ◽

pp. 1339

Author(s):

Enrica Musella ◽

Ismael Chahed el Ouazzani ◽

Ana Rita Mendes ◽

Cesare Rovera ◽

Stefano Farris ◽

...

Keyword(s):

Water Vapor ◽

Food Packaging ◽

Antimicrobial Properties ◽

Water Vapor Permeability ◽

Lag Phase ◽

Vapor Permeability ◽

Olive Leaves ◽

Chitosan Films

Chitosan films with olive leaf extract (OLE) incorporated at different concentrations were characterized regarding their antimicrobial, antioxidant and some relevant physical properties (i.e., solubility, water vapor permeability, and tensile properties). Results indicate that the active films have substantial antimicrobial activity against Listeria monocytogenes and Campylobacter jejuni mostly extending the microorganisms lag phase. A lower level of inhibition was found in the case of Escherichia coli. However, the OLE seems not to improve the intrinsic antimicrobial properties of the chitosan itself, except for C. jejuni. These results were confirmed with in situ testing using chicken. The chitosan films with OLE exhibited antioxidant activity, increasing with the OLE concentration, from 0.04 to 0.15 g/L ascorbic acid equivalents, corresponding to films with 10%–30% OLE relative to the chitosan. Chitosan films loaded with OLE exhibited a higher solubility in food simulants and a reduced permeability against water vapor. Overall, the combination of OLE and chitosan allows to obtain a promising active bio-based packaging solution for addressing safety and quality issues.

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Ultraviolet blocking and antioxidant polyvinyl alcohol films incorporated with baicalin extraction from Scutellaria baicalensis Georgi

Journal of Polymer Engineering ◽

10.1515/polyeng-2020-0071 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Jinshu Liu ◽

Xiaoyan Ma ◽

Wenzhao Shi ◽

Jianwei Xing ◽

Chaoqun Ma ◽

...

Keyword(s):

Water Vapor ◽

Polyvinyl Alcohol ◽

Radical Scavenging Activity ◽

Antioxidant Properties ◽

Radical Scavenging ◽

Water Vapor Permeability ◽

Scutellaria Baicalensis ◽

Vapor Permeability ◽

Protective Film ◽

Uv Blocking

Abstract Baicalin, an active flavonoid ingredient of Scutellaria baicalensis Georgi, was extracted by heat reflux extraction and showed the same significance UV absorption property with standard baicalin. Active films were prepared from polyvinyl alcohol (PVA) containing baicalin extract by casting method. The effect of baicalin extracts on the UV-blocking, optical, antioxidant property, water vapor permeability, swelling and mechanical properties of the films were studied. UV–vis transmittance spectra showed that PVA films incorporated with baicalin extract blocked ultraviolet light range from 280–400 nm even with low concentration of baicalin (0.5 wt%) and maintain the high transparency in visible spectrum. The outstanding UV-blocking properties of PVA films incorporated with baicalin extract were also confirmed by Rhodamine B degradation. Baicalin conferred antioxidant properties to PVA films as determined by DPPH radical scavenging activity. Due to the interaction between hydroxy groups of baicalin and PVA molecule, water vapor permeability, swelling and elongation at break of the films were decreased accompanied with the increasing in tensile strength and Young’s modulus. FTIR reveal that the interaction between PVA molecules was significant changed by the introduction of baicalin. These results suggest that PVA film incorporated with baicalin extract can be used for the development of functional protective film.

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The Effect of Extraction Conditions on the Barrier and Mechanical Properties of Kefiran Films

Coatings ◽

10.3390/coatings11050602 ◽

2021 ◽

Vol 11 (5) ◽

pp. 602

Author(s):

Carmen Rodica Pop ◽

Teodora Emilia Coldea ◽

Liana Claudia Salanţă ◽

Alina Lăcrămioara Nistor ◽

Andrei Borşa ◽

...

Keyword(s):

Water Vapor ◽

Conformational Changes ◽

Water Vapor Permeability ◽

Edible Films ◽

Film Structure ◽

Water Soluble ◽

Vapor Permeability ◽

Water Molecules ◽

Compact Structure ◽

Technology Applications

Kefiran is an exopolysaccharide classified as a heteropolysaccharide comprising glucose and galactose in equimolar quantities, and it is classified as a water-soluble glucogalactan. This work aimed to investigate the effect of different extraction conditions of kefiran on the structural and physical properties of the edible films obtained. Fourier-transform infrared spectroscopy and scanning electron microscopy were performed, together with a determinations of moisture content, solubility, water vapor permeability and degree of swelling. The kefiran films presented values of the water vapor permeability between 0.93 and 4.38 × 10−11 g/m.s.Pa. These results can be attributed to the development of a more compact structure, where glycerol had no power to increase the free volume and the water vapor diffusion through their structure. The possible conformational changes in the kefiran film structure, due to the interspersing of the plasticizers and water molecules that they absorb, could be the reason for producing flexible kefiran films in the case of using glycerol as a plasticizer at 7.5% w/w. Moreover, it was observed that the extraction conditions are a significant factor in the properties of these films and their food technology applications.

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Development of PE/PCL Bilayer Films Modified with Casein and Aluminum Oxide

Molecules ◽

10.3390/molecules26113090 ◽

2021 ◽

Vol 26 (11) ◽

pp. 3090

Author(s):

Anita Ptiček Siročić ◽

Ana Rešček ◽

Zvonimir Katančić ◽

Zlata Hrnjak-Murgić

Keyword(s):

Mechanical Properties ◽

Thermal Properties ◽

Water Vapor ◽

Aluminum Oxide ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Mechanical And Thermal Properties ◽

Oxide Compound ◽

Bilayer Films ◽

Oxide Particles

The studied samples were prepared from polyethylene (PE) polymer which was coated with modified polycaprolactone (PCL) film in order to obtain bilayer films. Thin PCL film was modified with casein/aluminum oxide compound to enhance vapor permeability as well as mechanical and thermal properties of PE/PCL films. Casein/aluminum oxide modifiers were used in order to achieve some functional properties of polymer film that can be used in various applications, e.g., reduction of water vapor permeability (WVTR) and good mechanical and thermal properties. Significant improvement was observed in mechanical properties, especially in tensile strength as well as in water vapor values. Samples prepared with aluminum oxide particles indicated significantly lower values up to 60%, and samples that were prepared with casein and 5% Al2O3 showed the lowest WVTR value.

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Chitosan Films Obtained from Brachystola magna (Girard) and Its Evaluation on Quality Attributes in Sausages during Storage

Molecules ◽

10.3390/molecules26061782 ◽

2021 ◽

Vol 26 (6) ◽

pp. 1782

Author(s):

Juan Manuel Tirado-Gallegos ◽

Paul Baruk Zamudio-Flores ◽

Miguel Espino-Díaz ◽

René Salgado-Delgado ◽

Gilber Vela-Gutiérrez ◽

...

Keyword(s):

Weight Loss ◽

Lipid Oxidation ◽

Meat Products ◽

Water Vapor Permeability ◽

Good Alternative ◽

Quality Attributes ◽

Vapor Permeability ◽

Biodegradable Films ◽

Molecular Weights ◽

Chitosan Films

High molecular weight chitosan (≈322 kDa) was obtained from chitin isolated from Brachystola magna (Girard) to produced biodegradable films. Their physicochemical, mechanical and water vapor permeability (WVP) properties were compared against commercial chitosan films with different molecular weights. Brachystola magna chitosan films (CFBM) exhibited similar physicochemical and mechanical characteristics to those of commercial chitosans. The CFBM films presented lower WVP values (10.01 × 10−11 g/m s Pa) than commercial chitosans films (from 16.06 × 10−11 to 64.30 × 10−11 g/m s Pa). Frankfurt-type sausages were covered with chitosan films and stored in refrigerated conditions (4 °C). Their quality attributes (color, weight loss, pH, moisture, texture and lipid oxidation) were evaluated at 0, 5, 10, 15 and 20 days. Sausages covered with CFMB films presented the lowest weight loss (from 1.24 to 2.38%). A higher increase in hardness (from 22.32 to 30.63 N) was observed in sausages covered with CFMB films. Compared with other films and the control (uncovered sausages), CFMB films delay pH reduction. Moreover, this film presents the lower lipid oxidation level (0.10 malonaldehyde mg/sample kg). Thus, chitosan of B. magna could be a good alternative as packaging material for meat products with high-fat content.

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