Glycerol and fatty acid influences on the rheological and technological properties of composite films from residues of Cynoscion acoupa

Pereira, Gleice Vasconcelos da Silva; Pereira, Glauce Vasconcelos da Silva; Neves, Eleda Maria Paixão Xavier; Rêgo, José de Arimatéia Rodrigues do; Brasil, Davi do Socorro Barros; Lourenço, Lúcia de Fátima Henriques; Joele, Maria Regina Sarkis Peixoto

doi:10.1016/j.fbio.2020.100773

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…The surface micrographs of the different biodegradable films are shown in Figure 2. Film T1 presented a smooth and continuous surface, demonstrating that proteins can aggregate and form a homogeneous film network 63 . Similar results were observed by Tang et al 18 in collagen films of different species of freshwater fish.…”

Section: Resultssupporting

confidence: 85%

Collagen films, cassava starch and their blends: Physical–chemical, thermal and microstructure properties

et al. 2021

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Collagen-based films from Tilapia skin, cassava starch and their blends were prepared using the casting technique. Five treatments were prepared, where T1 represents the film containing 6% collagen, T2-film containing 6% cassava starch, T3-film containing 3%/3% blend of collagen/cassava starch, T4-film containing the 4.5%/1.5% blend of collagen/cassava starch and T5-film containing the blend of 1.5%/4.5% collagen/cassava starch. The physical, mechanical, thermal and morphological properties of each film were evaluated. The results indicated that T1 and T4 treatments improved film water resistance (p < 0.05). T3-T5 treatments provided higher values (p < 0.05) of lightness (L*). The scanning electron micrographs showed a smooth and homogeneous surface for the T1 and T2 films and a slightly roughened surface for the T3-T5 films. The T1 film had the highest (p < 0.05) tensile strength and elongation at break compared to the other films. Furthermore, X-ray diffraction (XRD) indicated that the structures of the T1, T3, T4 and T5 films were predominantly amorphous. In general, T1 and T4 films were the ideal formulations. They have potential for being used as edible packaging for food, soluble sachets, containers for oils and/or capsules for the delivery of bioactive compounds.

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Section: Resultssupporting

confidence: 85%

Collagen films, cassava starch and their blends: Physical–chemical, thermal and microstructure properties

et al. 2021

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“…34 The absorption peaks of the films were observed in regions 3277.1, 2927.2, 1635.2, 1545.8, 1240.5 and 1046.2 cm �1 , corresponding to amide A (OH vibration stretch and NH linkage stretch), amide B (CH and NH3 þ groups vibration), amide I (stretching C ¼ O), amide II (flexing vibration of the NH groups and stretching of the CN groups) and amide III (vibration of the CN and NH groups of the connected amide), respectively. 33 Pereira et al 35 also found peaks in films of myofibrillar proteins, amide A (3278 cm �1 ) and B (2926 cm �1 ) and for amides I, II and II around 1641, 1546 and 1041 cm �1 , respectively.…”

Section: Functional Properties Of Filmsmentioning

confidence: 90%

Biodegradable films from fishing industry waste: Technological properties and hygroscopic behavior

Pereira

Neves

Oliveira

et al. 2021

Journal of Composite Materials

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The objective was to evaluate the effect of glycerol on functional properties and sorption behavior of films elaborated with myofibrillar proteins of fish. Analyses of solubility, water vapor permeability (WVP), tensile strength (TS), elongation, and moisture sorption isotherms were performed. Films with lower glycerol concentrations (5, 10, and 15%) showed lower (p ≤ 0.05) permeability when compared to films with 30 and 40%. The increase in the glycerol concentration decreased the TS and increased the elongation of the lyophilized myofibrillary protein films (p ≤ 0.05). Glycerol significantly affected the solubility properties, with an increase of 95.96%. In the sorption process, the films presented curves types II and III, in which high concentrations of glycerol increased their water content. The sorption hysteresis decreased when the concentration of glycerol increased up to its disappearance in films with 40% glycerol. The GAB model was adequate to represent the sorption process of biodegradable films in the relative humidity range of 10–85% under the studied conditions. Films based on fish myofibrillar proteins in the presence of glycerol increase the water's binding capacity to mono and multilayers, and depending on the packaged food, like fresh produce, can preserve the moisture in the food, prolonging its shelf-life.

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“…The instrumental color of the films was evaluated in a colorimeter (Minolta, CR 410, USA), obtaining the parameters L * (brightness), a * (intensity of red), b * (intensity of yellow), and calculated the values of C * (chroma), hue° angle (pitch angle), in four repetitions (Pereira et al. 2020).…”

Section: Methodsmentioning

confidence: 99%

Rheological characterization and influence of different biodegradable and edible coatings on postharvest quality of guava

Pereira

Oliveira

et al. 2021

J. Food Process. Preserv.

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This work aimed at evaluating the rheological behavior and the application of coatings of lyophilized fish myofibrillar proteins (LMP), cornstarch (CS), and gum arabic (GA) in fruit during storage. The rheological behavior of the LMP, CS, and GA solutions was carried out at the concentrations of 1 g of proteins, 3 g of corn starch, and 1 g of gum arabic, respectively. The solutions were applied to the guavas with peel and the parameters of color, weight loss, pH, total acidity (TA), total soluble solids (SST), SST/TA ratio, and firmness were evaluated. They were then stored at a temperature of 24 ± 0.21°C and relative humidity of 64 ± 1.15% RH in polyethylene trays. The CS filmogenic solution showed higher viscosity, followed by LMP and GA. Herschel–Bulkley model showed the best fit for all solutions, with dilating behavior for LMP, GA, and pseudoplastic for CS. The LMP and CS delayed the fruit's ripening when compared to the control and GA, checked by the color. The loss of mass and firmness with LMP and CS showed a lower percentage in the storage. LMP and CS will contribute positively to the slowdown mature of guavas. Practical applications We believe our findings may be of interest to readers, as they bring a new and exciting approach in the use of renewable raw materials at a low economic cost, and also exploring the potential of waste from the Fishing Industry, as well as natural plant products (starch and gum), considered biodegradable and biocompatible. Moreover, this study can be applied for a lot of fruit and vegetables, in order to reduce postharvest losses and complement the economic benefits, in a process considered environmentally friendly.

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Glycerol and fatty acid influences on the rheological and technological properties of composite films from residues of Cynoscion acoupa

Cited by 7 publications

References 35 publications

Collagen films, cassava starch and their blends: Physical–chemical, thermal and microstructure properties

Collagen films, cassava starch and their blends: Physical–chemical, thermal and microstructure properties

Biodegradable films from fishing industry waste: Technological properties and hygroscopic behavior

Rheological characterization and influence of different biodegradable and edible coatings on postharvest quality of guava

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