Morphological, mechanical, barrier and properties of films based on acetylated starch and cellulose from barley

Halal, Shanise Lisie Mello El; Colussi, Rosana; Biduski, Bárbara; Evangelho, Jarine Amaral do; Bruni, Graziella Pinheiro; Antunes, Maria de Lurdes; Zavareze, Elessandra da Rosa

doi:10.1002/jsfa.7773

Cited by 29 publications

(19 citation statements)

References 36 publications

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“…Thickness is an important parameter as it is considered in the calculation of mechanical and barrier properties of films . Thickness of native and modified starch composite films is presented in Table .…”

Section: Resultsmentioning

confidence: 99%

“…The miscibility of film‐forming components and homogeneity of films are well defined by the presence of a single endothermic peak . This endothermic peak is associated with the melting of starch crystals, which are rearranged during the process of retrogradation . It has been reported that the melting endotherm of starch films could originate from the co‐crystallization of amylose and amylopectin during the process of film formation, allowing continuous crystallization of amylopectin .…”

Section: Resultsmentioning

confidence: 99%

“…Thickness is an important parameter as it is considered in the calculation of mechanical and barrier properties of films. 20 Thickness of native and modified starch composite films is presented in Table 2. Modified starches presented higher thickness than native starch composite film, which increased with an increase in modification level.…”

Section: Physicochemical Characteristics Of Prepared Film Thicknessmentioning

confidence: 99%

“…10 This endothermic peak is associated with the melting of starch crystals, which are rearranged during the process of retrogradation. 20 It has…”

Section: Samplementioning

confidence: 99%

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Development and characterization of biodegradable films from whey protein concentrate, psyllium husk and oxidized, crosslinked, dual‐modified lotus rhizome starch composite

2019

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BACKGROUND The combined effect of variously chemically modified lotus rhizome starch, whey protein concentrate, psyllium husk and glycerol was evaluated on developed biodegradable films. RESULTS Dual‐modified lotus rhizome starch composite films presented minimum solubility and water vapor permeability and maximum tensile strength among native and modified starch composite films. Elongation at break of dual‐modified starch composite films (FLCOS1, FLCOS2) was found to be a maximum, whereas a decrease was observed for FLCOS3. Oxidized lotus rhizome starch composite films were the most transparent among native and modified starch composite films, whereas crosslinked lotus rhizome starch composite films were the least transparent. Scanning electron microscopy indicated a homogeneous compact surface of oxidized starch composite films, whereas troughs were observed in crosslinked and dual‐modified starch composite films. Using whey protein concentrate, psyllium husk and glycerol without any phase separation, smoother films and with compact microstructures were produced. Fourier transform infrared analysis revealed additional peaks for modified starch films, confirming greater interaction among starch and film‐forming components, whereas amorphous structure was indicated from X‐ray diffraction results of modified starch composite films. CONCLUSIONS Owing to various properties of modified starches, these films find application in edible contact packages and can better be used for products where higher structural integrity and lower water vapor transmission are needed. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Physicochemical Characteristics Of Prepared Film Thicknessmentioning

confidence: 99%

“…10 This endothermic peak is associated with the melting of starch crystals, which are rearranged during the process of retrogradation. 20 It has…”

Section: Samplementioning

confidence: 99%

See 2 more Smart Citations

Development and characterization of biodegradable films from whey protein concentrate, psyllium husk and oxidized, crosslinked, dual‐modified lotus rhizome starch composite

2019

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“…The surface and cross‐section morphology of the films were visualized using a scanning electron microscope (JEOL, JSM‐6610LV, Peabody, MA, USA), following the method described by Halal et al . Samples were examined at 1500× and 500× magnifications.…”

Section: Methodsmentioning

confidence: 99%

Characteristics of starch from different bean genotypes and its effect on biodegradable films

et al. 2018

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Preparation and partial characterization of films made with dual‐modified (acetylation and crosslinking) potato starch

2019

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Background Starch is an alternative material for the production of biodegradable plastics; however, native starches have drawbacks due to their hydrophilic nature. Chemical modifications such as acetylation and crosslinking are used to broaden the potential end‐uses of starch. Dual modification of starches increases their functionality compared to that of starches with similar single modifications. In this study, a dual‐modified potato starch (acetylated and crosslinked) was used to produce films by casting. Results Changes in the arrangement of the amylopectin double helices of dual‐modified starch were evident from X‐ray diffraction patterns, pasting profiles and thermal properties. The degree of substitution for acetyl groups was low (0.058 ± 0.006) because crosslinking dominated acetylation. Modified starch film had higher elongation percentage (82.81%) than its native counterpart (57.4%), but lower tensile strength (3.51 MPa for native and 2.17 MPa for dual‐modified) and lower crystallinity in fresh and stored films. The sorption isotherms indicated that the dual modification decreased the number of reactive sites for binding water, resulting in a reduction in the monolayer value and a decrease in the solubility and water vapor permeability. Conclusions Dual modification of starch may be a feasible option for improving the properties of biodegradable starch films. © 2018 Society of Chemical Industry

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Morphological, mechanical, barrier and properties of films based on acetylated starch and cellulose from barley

Cited by 29 publications

References 36 publications

Development and characterization of biodegradable films from whey protein concentrate, psyllium husk and oxidized, crosslinked, dual‐modified lotus rhizome starch composite

Development and characterization of biodegradable films from whey protein concentrate, psyllium husk and oxidized, crosslinked, dual‐modified lotus rhizome starch composite

Characteristics of starch from different bean genotypes and its effect on biodegradable films

Preparation and partial characterization of films made with dual‐modified (acetylation and crosslinking) potato starch

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