scholarly journals Characteristics and Permeability Properties of Sago Starch Edible Film

2019 ◽  
Vol 8 (2) ◽  
pp. 34-41
Author(s):  
Payung Layuk ◽  
Joula Sondakh ◽  
Marietje Pesireron
Keyword(s):  
Mass Transfer ◽  
Water Vapor ◽  
Oxygen Permeability ◽  
Water Vapor Permeability ◽  
Packaging Material ◽  
Edible Film ◽  
Vapor Permeability ◽  
Sago Starch ◽  
Starch Films ◽  
Film Characteristics

The research was aimed to study the potential of sago starch as an edible film or edible wrapper, which is used as a barrier to mass transfer. The edible film was made from sago starch with the addition of nutmeg pectin at concentrations of 0%, 10%, 15%, 20% and 25% by adding glycerol as much as 20% w/w. The results showed that the addition of nutmeg pectin and glycerol was able both to improve film characteristics and to control mass transfer. Addition of nutmeg pectin caused an increase in the Water Vapor Permeability (WVP) value of the film. Edible sago starch films can be used as a dodol packaging material because it protects products from oxidation and fungi, and is a better barrier from oxygen when compared to synthetic films. The increase in nutmeg pectin concentration caused an increase in WVP and exponential oxygen permeability. Keywords: edible film, sago, wrapping

scholarly journals Incorporation of bentonite clay in cassava starch films for the reduction of water vapor permeability

2018 ◽  
Vol 105 ◽  
pp. 637-644 ◽  
Author(s):  
M.K.S. Monteiro ◽  
V.R.L. Oliveira ◽  
F.K.G. Santos ◽  
E.L. Barros Neto ◽  
R.H.L. Leite ◽  
...  
Keyword(s):  
Water Vapor ◽  
Water Vapor Permeability ◽  
Bentonite Clay ◽  
Cassava Starch ◽  
Vapor Permeability ◽  
Starch Films

scholarly journals Elaboration and Characterization of Active Apple Starch Films Incorporated with Ellagic Acid

Coatings ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 384
Author(s):  
Juan Tirado-Gallegos ◽  
Paul Zamudio-Flores ◽  
José Ornelas-Paz ◽  
Claudio Rios-Velasco ◽  
Guadalupe Olivas Orozco ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Water Vapor ◽  
Antioxidant Capacity ◽  
Ellagic Acid ◽  
Uv Light ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Starch Films

Apple starch films were obtained from apples harvested at 60, 70, 80 and 90 days after full bloom (DAFB). Mechanical properties and water vapor permeability (WVP) were evaluated. The apple starch films at 70 DAFB presented higher values in the variables of tensile strength (8.12 MPa), elastic modulus (3.10 MPa) and lower values of water vapor permeability (6.77 × 10−11 g m−1 s−1 Pa−1) than apple starch films from apples harvested at 60, 80 and 90 DAFB. Therefore, these films were chosen to continue the study incorporating ellagic acid (EA). The EA was added at three concentrations [0.02% (FILM-EA0.02%), 0.05% (FILM-EA0.05%) and 0.1% (FILM-EA0.1%) w/w] and compared with the apple starch films without EA (FILM-Control). The films were characterized by their physicochemical, optical, morphological and mechanical properties. Their thermal stability and antioxidant capacity were also evaluated. The FILM-Control and FILM-EA0.02% showed a uniform surface, while FILM-EA0.05% and FILM-EA0.1% showed a rough surface and insoluble EA particles. Compared to FILM-Control, EA modified the values of tensile strength, elasticity modulus and elongation at break. The antioxidant capacity increased as EA concentration did. EA incorporation allowed obtaining films with higher antioxidant capacity, capable of blocking UV light with better mechanical properties than film without EA.

Effect of Beeswax on Functional and Structural Properties of Soy Protein Isolate Films

2010 ◽  
Vol 150-151 ◽  
pp. 1396-1399 ◽  
Author(s):  
Xi Hong Li ◽  
Kuan Guo ◽  
Xiao Yan Zhao
Keyword(s):  
Water Vapor ◽  
Structural Properties ◽  
Soy Protein ◽  
Oxygen Permeability ◽  
Soy Protein Isolate ◽  
Water Vapor Permeability ◽  
Protein Isolate ◽  
Vapor Permeability ◽  
Scanning Calorimetry ◽  
Elongation At Break

This paper explains and demonstrates the effects of beeswax on functional and structural properties of soy protein isolate films, containing different glycerol. The results showed that percentage elongation at break, water vapor permeability, and transparency of soy protein isolate films decreased when the beeswax content increased, but tensile strength and oxygen permeability increased. The higher the glycerol content, the higher the film water vapor permeability, oxygen permeability, and transparency. The results of differential scanning calorimetry and Fourier transform infrared spectroscopy suggested that beeswax cross-linked with soy protein isolate molecules via connecting with glycerol, composed the film matrix.

Hydrophobicity and Water Vapor Permeability of Ethylene-plasma-coated Whey, Chitosan and Starch Films

2001 ◽  
Vol 49 (2) ◽  
pp. 131-145 ◽  
Author(s):  
M. Lundbäck ◽  
M. S. Hedenqvist ◽  
A. Jansson ◽  
A. Wirsén ◽  
A.-C. Albertsson ◽  
...  
Keyword(s):  
Water Vapor ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Starch Films

scholarly journals Process Development for Edible Film Preparation Using Avocado Seed Starch: Response Surface Modeling and Analysis for Water-Vapor Permeability

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
R. Ramesh ◽  
Hemalatha Palanivel ◽  
S. Venkatesa Prabhu ◽  
Belachew Zegale Tizazu ◽  
Adugna Abdi Woldesemayat
Keyword(s):  
Water Vapor ◽  
Response Surface ◽  
Process Model ◽  
Water Vapor Permeability ◽  
Edible Films ◽  
Edible Film ◽  
Tween 20 ◽  
Vapor Permeability ◽  
Film Property ◽  
Avocado Seed

Starch-based edible films are gaining huge interest in food packaging industries. In the present work, avocado seed starch (ASS) was extracted and used to develop an edible film. The influence of four important process factors, starch, agar, sorbitol, and Tween-20, was studied on one of the important barrier properties, water-vapor permeability (WP), of developed edible film. The three-level RSM design with Box–Behnken approach was carried out to investigate the film property, WP. ASS-based edible films were prepared by the casting method. The results revealed that the increment in the contents of Tween-20 and sorbitol reduces the WP of the film. Using the response surface analysis, the effect of the aforementioned factors was analyzed; they showed significant impact on WP. To predict the influence of the selected process parameters, a second-order polynomial equation was constructed. Additionally, Pareto analysis of variance was employed over the obtained results to investigate the significance of the developed process model.

scholarly journals Effect of relative humidities on microstructural, barrier and mechanical properties of Yam starch-monoglyceride films

2009 ◽  
Vol 52 (6) ◽  
pp. 1505-1512 ◽  
Author(s):  
Fábio Avelino Bublitz Ferreira ◽  
Maria Victória Eiras Grossmann ◽  
Suzana Mali ◽  
Fábio Yamashita ◽  
Lisandro Pavie Cardoso
Keyword(s):  
Mechanical Properties ◽  
Water Vapor ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Screw Extruder ◽  
Relative Crystallinity ◽  
Single Screw ◽  
Single Screw Extruder ◽  
Hydrophobic Compound ◽  
Starch Films

The effect of monoglyceride on microstructural, barrier and mechanical properties of casted yam starch films were investigated in different relative humidities (RH) and compared with glycerol-starch films. A single screw extruder was used to produce the starch - monoglyceride complex before film production and this process was effective to inhibit the phase separation in films. The addition of the hydrophobic compound reduced hydrophobicity, transparency and water vapor permeability of films. This later value for starch-glycerol film (1.7 x 10-10 g Pa-1 s-1 m-1) was higher than starch (1.2 x 10-10 g Pa-1 s-1 m-1) and monoglyceride-starch films (1.0 x 10-10 g Pa-1 s-1 m-1). Films containing glycerol had higher relative crystallinity (B and V H) with a slight increase at higher RH values, while for monoglyceride films, the crystallinity was constant. Monoglyceride-starch films presented poor mechanical properties when compared to glycerol- starch ones but they presented a stable behavior under different relative humidities.

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.

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