Physicochemical Properties of Biodegradable Tilapia Skin Gelatin Film and Gelatin-Polysaccharide Based Composite Films

2014 ◽  
Vol 941-944 ◽  
pp. 1133-1140 ◽  
Author(s):  
Shuai Peng ◽  
Li Hong Niu ◽  
Ke Qiang Lai ◽  
Yi Qun Huang
Keyword(s):  
Tensile Strength ◽  
Composite Film ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Gelatin Film ◽  
Vapor Permeability ◽  
Film Properties ◽  
Arabic Gum ◽  
Gelatin Films ◽  
Film Forming

The present study was to investigate the film forming properties of tilapia skin gelatin as affected by the addition of 2%, 5% Arabic gum or pectin (g/g gelatin), as well as 1%, 2% glutaraldehyde (GTA) (g/g gelatin) in an attempt to improve gelatin film properties. Tensile strength (TS) and transparency of gelatin film were improved 36.6% and 30.3% by the addition of Arabic gum, respectively, while the water vapor permeability (WVP) was not affected. The addition of pectin had less effect on the film tensile strength and transparency, but led to 41.7% of increase in WVP. Tensile strength and WVP of gelatin-arabic gum composite film cross-linked with 2% GTA were better than those of 1% GTA cross-linked composite film, though the extensibility and transparency were slightly weak. The FTIR spectra of gelatin films showed that both Arabic gum and pectin formed cross-linkages with gelatin protein molecules, while GTA facilitated the formation of intermolecular bonds, resulting in more stable films.

Mechanical and Water Barrier Properties of Zein–Corn Starch Composite Films as Affected by Gallic Acid Treatment

2016 ◽  
Vol 12 (8) ◽  
pp. 773-781 ◽  
Author(s):  
Kingsley Masamba ◽  
Yue Li ◽  
Hafiz Rizwan Sharif ◽  
Jianguo Ma ◽  
Fang Zhong
Keyword(s):  
Composite Film ◽  
Gallic Acid ◽  
Acid Treatment ◽  
Corn Starch ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Vapor Permeability ◽  
Water Barrier ◽  
Film Forming

Abstract The effect of gallic acid treatment on mechanical and water barrier properties in zein and zein–corn starch composite films was investigated. Four concentrations of corn starch (5 %, 10 %, 15 %, 20 %) were used in composite films making a final solid concentration of 6 % (w/v) in the film forming solution. One composite film containing 10 % corn starch was also prepared in absence of gallic acid for comparison purpose. Gallic acid treatment improved tensile strength (TS) and water vapor permeability (WVP) while solubility was increased in control zein films. On the other hand, gallic acid treatment significantly (p < 0.05) reduced TS and increased WVP in zein–corn starch composite films. Interestingly, mechanical and water barrier properties of composite films prepared in absence of gallic acid were comparatively better than gallic acid treated composite films. These findings provided useful insights in how each individual hydrocolloid in the composite film was differently affected by gallic acid treatment.

scholarly journals TiO2-KH550 Nanoparticle-Reinforced PVA/xylan Composite Films with Multifunctional Properties

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1589 ◽  
Author(s):  
Xinxin Liu ◽  
Xiaofeng Chen ◽  
Junli Ren ◽  
Chunhui Zhang
Keyword(s):  
Tensile Strength ◽  
Water Vapor ◽  
Composite Film ◽  
Oxygen Permeability ◽  
Positive Impact ◽  
Uv Light ◽  
Composite Films ◽  
Weight Ratio ◽  
Water Vapor Permeability ◽  
Vapor Permeability

In order to improve the strength of polyvinyl alcohol (PVA)/xylan composite films and endow them with ultraviolet (UV) shielding ability, TiO2-KH550 nanoparticles was synthesized and added into the PVA/xylan matrix. The TiO2-KH550 nanoparticle dispersed well in the 0.04% sodium hexametaphosphate (SHMP) solution under ultrasonic and stirring treatments. Investigations on the properties of the films showed that TiO2-KH550 had the positive impact on improving the strength, moisture, and oxygen barrier properties of the composite films. The maximum tensile strength (27.3 MPa), the minimum water vapor permeability (2.75 × 10−11 g·m−1·s−1·Pa−1), and oxygen permeability (4.013 cm3·m−2·24 h−1·0.1MPa−1) were obtained under the addition of 1.5% TiO2-KH550. The tensile strength of TiO2-KH550 reinforced composite film was increased by 70% than that of the pure PVA/xylan composite film, and the water vapor and oxygen permeability were decreased by 31% and 41%, respectively. Moreover, the UV transmittance of the film at the wavelength of 400 nm was almost zero when adding ≈1.5~2.5% (weight ratio, based on the total weight of PVA and xylan) of TiO2-KH550, which indicated the PVA/xylan composite films were endowed with an excellent UV light shielding ability.

scholarly journals Effect of Tea Polyphenols on Curdlan/Chitosan Blending Film Properties and Its Application to Chilled Meat Preservation

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 262 ◽  
Author(s):  
Ying Zhou ◽  
Tonglin Xu ◽  
Yu Zhang ◽  
Chong Zhang ◽  
Zhaoxin Lu ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Composite Films ◽  
Radical Scavenging ◽  
Water Vapor Permeability ◽  
Tea Polyphenols ◽  
Moisture Loss ◽  
Vapor Permeability ◽  
Film Properties ◽  
Antioxidant Efficiency ◽  
Elongation At Break

Incorporating phenolic acids into polysaccharide films improves their physical properties, in turn improving their potential commercial applicability as a preservation material for different foods. This study aimed to develop films from curdlan and tea polyphenols, and determine the effect of their contents on the water vapor permeability (WVP) and mechanical properties (tensile strength and elongation at break) of the films. Different ratios of tea polyphenols were incorporated into the curdlan-based films to improve their properties. The results obtained showed that the tensile strength and elongation at break of films were likely to be significantly decreased by adding tea polyphenols, especially at a content of 0.6%, which resulted in a 50% decrease. Meanwhile, the WVP and moisture content of the films was also decreased. However, a low WVP can prevent moisture loss from food. Other film properties, such as antioxidant efficiency, were also investigated. The results showed that the antioxidant potential of the film can be improved by tea polyphenols. The composite films were also applied to the preservation of chilled meat, which resulted in the shelf life being extended by about 3–5 days. Some properties, such as water resistance and DPPH (1,1-diphenyl-2-picrylhydrazyl) free radical scavenging capacity of the composite film, were improved.

scholarly journals TiO2-KH550 Nanoparticle Reinforced PVA/Xylan Composite Films with Multifunctional Properties

2018 ◽  
Author(s):  
Xinxin Liu ◽  
Xiaofeng Chen ◽  
Junli Ren ◽  
Chunhui Zhang
Keyword(s):  
Tensile Strength ◽  
Water Vapor ◽  
Composite Film ◽  
Oxygen Permeability ◽  
Positive Impact ◽  
Uv Light ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Barrier Properties ◽  
Vapor Permeability

In order to improve the strength of PVA/xylan composite films and endow them with ultraviolet (UV) shielding ability, TiO2-KH550 nanoparticle was synthesized and added into the PVA/xylan matrix. The TiO2-KH550 nanoparticle dispersed well in the 0.04% sodium hexametaphosphate (SHMP) solution under ultrasonic and stirring treatments. Investigations on the properties of films showed that TiO2-KH550 had the positive impact on improving the strength, moisture and oxygen barrier properties of the composite films. The maximum tensile strength (27.3 MPa), the minimum water vapor permeability (2.75&times;10-11 g&bull;m-1&bull;s-1&bull;Pa-1) and oxygen permeability (4.013 cm3&bull;m-2&bull;24h-1&bull;0.1MPa-1) were obtained under the addition of 1.5% TiO2-KH550. The tensile strength of TiO2-KH550 reinforced composite film was increased by 70% than that of the pure PVA/xylan composite film, and the water vapor and oxygen permeability were decreased by 31% and 41%, respectively. Moreover, the UV transmittance of film at the wavelength of 400 nm was almost zero when adding 1.5~2.5% of TiO2-KH550, which indicated the PVA/xylan composite films were endowed with excellent UV light shielding ability.

scholarly journals Smart Starch-Gelatin Films Incorporated with Curcumin

2020 ◽  
Vol 36 (6) ◽  
pp. 1088-1095
Author(s):  
Le Thi Bich Nguyet ◽  
Vinh Tien Nguyen
Keyword(s):  
Acetic Acid ◽  
Food Packaging ◽  
Gelatin Film ◽  
Film Properties ◽  
Elongation At Break ◽  
Independent Variables ◽  
Gelatin Films ◽  
Film Forming ◽  
Central Composite Experimental Design ◽  
Central Composite

In this study, we developed a starch-gelatin film incorporated with synthesized curcumin to be used as a pH-sensitive smart material for food packaging. The film-forming mixture contained five components: starch, gelatin, glycerol, acetic acid and curcumin. The interactions of the components and their effects on the film properties were investigated by using response surface methodology with central composite experimental design. The results showed impacts of the contents of these components as independent variables on tensile strength, elongation at break, Young’s modulus and solubility of the films. The contents of starch, gelatin and glycerol significantly affect these properties, while acetic acid and curcumin do not (p<0.05). Also, it was shown that the incorporation of curcumin provided the film with the capacity to sense pH changes from neutral to basic (yellow at pH ≤ 8 and orange-red at pH ≥ 9).

Fabrication of Composite Films Based on Chitosan and Vegetable-Tanned Collagen Fibers Crosslinked with Genipin

2021 ◽  
Vol 116 (10) ◽  
Author(s):  
Jie Liu ◽  
Yanchun Liu ◽  
Eleanor M. Brown ◽  
Zhengxin Ma ◽  
Cheng-Kung Liu
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Water Vapor ◽  
Composite Film ◽  
Composite Films ◽  
Value Added ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Leather Industry ◽  
Compact Structure

The leather industry generates considerable amounts of solid waste and raises many environmental concerns during its disposal. The presence of collagen in these wastes provides a potential protein source for the fabrication of bio-based value-added products. Herein, a novel composite film was fabricated by incorporating vegetable-tanned collagen fiber (VCF), a mechanically ground powder-like leather waste, into a chitosan matrix and crosslinked with genipin. The obtained composite film showed a compact structure and the hydrogen bonding interactions were confirmed by FTIR analysis, indicating a good compatibility between chitosan and VCF. The optical properties, water absorption capacity, thermal stability, water vapor permeability and mechanical properties of the composite films were characterized. The incorporation of VCF into chitosan led to significant decreases in opacity and solubility of the films. At the same time, the mechanical properties, water vapor permeability and thermal stability of the films were improved. The composite film exhibited antibacterial activity against food-borne pathogens. Results from this research indicated the potential of the genipin-crosslinked chitosan/VCF composites for applications in antimicrobial packaging. 

Effects of Zein on Film-Forming Ability and Properties of Wheat Gluten Films

2013 ◽  
Vol 750-752 ◽  
pp. 1582-1585
Author(s):  
Chun Hong Zhang ◽  
Nan Chang ◽  
Chen Li ◽  
Xin Hua Li
Keyword(s):  
Water Retention ◽  
Wheat Gluten ◽  
Composite Films ◽  
Antibacterial Properties ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Hydrogen Bond Interaction ◽  
Elongation At Break ◽  
Film Forming ◽  
And Staphylococcus Aureus

Zein was added into wheat gluten (WG) to prepare zein composite films (ZCF) in order to improve the properties of films. The film-forming ability, properties, surface microstructure and infrared spectrum of WG films and ZCF were investigated. The results show that the viscosity of film-forming solutions decrease, and uniformity become worse slightly, after zein added. ZCF are yellow, with metal luster, whose toughness and water retention increase. Compared to the control, the ZCF tensile strength (TS), elongation at break (EB) and resistance of oxygen are increased by 33.2%, 17.2% and 11.25%, and water vapor permeability (WVP) and transparency are decreased by 26.0% and 75.4% respectively. ZCF have better antibacterial properties than WG films. The inhibition effect on escherichia coli and staphylococcus aureus are increased by 36.36% and 32.89% respectively. Hydrogen bond interaction of ZCF become weak, and the surface of ZCF become smooth and evenly.

scholarly journals Antioxidant, Antibacterial, Water Binding Capacity and Mechanical Behavior of Gelatin-Ferula Oil Film as a Wound Dressing Material

2015 ◽  
Vol 4 (2) ◽  
pp. 103-14
Author(s):  
Gholamreza Kavoosi ◽  
Amin Shakiba ◽  
Mahmood Ghorbani ◽  
Seyed Mohammad Mahdi Dadfar ◽  
Amin Mohammadi Purfard
Keyword(s):  
Water Vapor ◽  
Wound Dressing ◽  
Water Solubility ◽  
Water Vapor Permeability ◽  
Antibacterial Activities ◽  
Gelatin Film ◽  
Vapor Permeability ◽  
Elongation At Break ◽  
Gelatin Films ◽  
Water Swelling

Background: Development of biodegradable and biocompatible films based on protein polymer with strong antioxidant and antibacterial activities has gradually obtained extensive concern in the world. In this study, the improvement of gelatin film properties incorporated with Ferula assa-foetida essential oil (FAO) as a potential antioxidant/antibacterial wound dressing film was investigated. Materials and Methods: Gelatin films were prepared from gelatin solutions (10% w/v) containing different concentration of FAO. The effect of FAO addition on water solubility, water swelling, water vapor permeability, mechanical behavior, light barrier properties as well as antioxidant and antibacterial activities of the films were examined. Results: Water solubility, water swelling and water vapor permeability for pure gelatin films were 29 ± 1.6%, 396 ± 8%, 0.23 ± 0.018 g.mm/m2.h, respectively. Incorporation of FAO into gelatin films caused a significant decrease in swelling and increase in solubility and water vapor permeability. Tensile strength, elastic modulus and elongation at break for pure gelatin films were 4.2 ± 0.4 MPa, 5.8 ± 4.2 MPa, 128 ± 8 %, respectively. Incorporation of FAO into gelatin films caused a significant decrease in tensile strength and elastic modulus and increase in elongation at break of the films. Gelatin film showed UV-visible light absorbance ranging from 280 to 480 nm with maximum absorbance at 420 nm. Gelatin/FAO films also exhibited excellent antioxidant ad antimicrobial activities. Conclusions: Our results suggested that gelatin/FAO films could be used as active films due to their excellent antioxidant and antimicrobial features for different biomedical applications including wound-dressing materials.[GMJ.2015;4(2):103-14]

scholarly journals Physical Properties of Composite Films from Tilapia Skin Collagen with Pachyrhizus Starch and Rambutan Peel Phenolics

Marine Drugs ◽  
2019 ◽  
Vol 17 (12) ◽  
pp. 662
Author(s):  
Yongliang Zhuang ◽  
Shiyan Ruan ◽  
Hanghang Yao ◽  
Yun Sun
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Food Packaging ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Amorphous Structure ◽  
Vapor Permeability ◽  
Scanning Calorimetry ◽  
Active Food Packaging ◽  
Skin Collagen

Different composite films composed of tilapia skin collagen (TSC) with Pachyrhizus starch (PS) or rambutan peel phenolics (RPP) were prepared, and the physical properties of these films were determined. The effects of PS and RPP on TSC films were investigated, and our results indicated that PS and RPP could improve the physical properties of TSC films. Opacity and film thickness showed an enhanced trend with increasing PS and RPP contents in TSC films, whereas solubility in water, elongation-at-break (EAB), and water vapor permeability (WVP) showed declining trends. TSC film with 10% PS and 0.5% RPP had the highest tensile strength, and the tensile strength dropped drastically when the content of PS and RPP increased. The light transmittances of the films could decrease with the incorporation of PS and RPP. Differential scanning calorimetry (DSC) demonstrated that the addition of PS and RPP improved the thermal stability of TSC films. In addition, X-ray diffraction indicated that the crystallinity of the films decreased and the amorphous structure of the films tended to become more complex with the addition of PS and RPP. As shown by fourier transform infrared spectroscopy (FTIR) analysis, PS and RPP can strongly interact with TSC, resulting in a modification of its structure. Scanning electron microscope (SEM) analysis showed that there was a good compatibility between TSC, PS, and RPP. The results indicated that TSC film incorporated with 10% PS and 0.5% RPP was an effective method for improve the physical properties of the film. TSC–PS–RPP composite films can be used not only in biomedical applications, but also as active food packaging materials.

Ferulic Acid and its Oxide Enhance Performance of Soy Protein-Isolate/Chitosan Composite Films

2014 ◽  
Vol 716-717 ◽  
pp. 28-31
Author(s):  
Chao Zhang ◽  
Xiao Fei Guo ◽  
Yue Ma ◽  
Xiao Yan Zhao
Keyword(s):  
Tensile Strength ◽  
Soybean Protein ◽  
Soy Protein Isolate ◽  
Composite Films ◽  
Water Vapor Permeability ◽  
Protein Isolate ◽  
Vapor Permeability ◽  
Soybean Protein Isolate ◽  
Chitosan Composite ◽  
Thermal Stability Of

The effect of FA and OFA on performances of the soybean protein-isolate/chitosan composite films was evaluated. The FA and OFA enhanced the tensile strength and thermal stability of the composite films significantly, while they reduced the water vapor permeability to 60.3 % and 72.8 % of the control respectively. Moreover, the OFA was more effective to enhance the tensile strength of the composite films than the FA.

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