Effects of protein interactions on properties and microstructure of zein–gliadin composite films

Gu, Luping; Wang, Miao; Jingwen, Zhou

doi:10.1016/j.jfoodeng.2013.05.022

Cited by 65 publications

(23 citation statements)

References 24 publications

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“…In contrast, gliadin films present an excellent oxygen barrier capability in dry conditions, deteriorating at higher relative humidity (Balaguer et al, 2013). Gliadin films have good extensibility, but the tensile strength was generally reported to be smaller than 5 MPa and elastic modulus (EM) of gliadin films was smaller than 40 MPa (Gu et al, 2013;Balaguer et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Development and characterisation of polylactic acid–gliadin bilayer/trilayer films as carriers of thymol

Zhu

Tang

Yin

et al. 2017

Int J of Food Sci Tech

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Summary Biodegradable food packaging promises a more sustainable future. Poly(lactic acid) (PLA) is a promising alternative for petroleum‐derived polymers. However, PLA films suffer from poor barrier properties compared with petroleum‐derived ones. To address this issue, we designed bilayer and sandwich‐architectured trilayer films based on PLA and gliadin. We reported firstly the direct formation of PLA–gliadin bilayer/trilayer films without surface modification on PLA film. The films were compact and uniform, and double/triple layers were combined firmly, preventing delamination. This strategy enhanced mechanical resistance, ductility and moisture barrier of gliadin films and concomitantly enhanced the oxygen barrier for PLA films. Thymol loadings endowed bilayer/trilayer films with antimicrobial activity and antioxidant activity. The antimicrobial activity of the films depended on film types, and gliadin layer presented larger inhibition zone than PLA layer, hinting that the films possessed directional releasing role. This study opens a promising route to fabricate bilayer/trilayer architecture helping to create synergism of the biopolymers.

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Section: Introductionmentioning

confidence: 99%

Development and characterisation of polylactic acid–gliadin bilayer/trilayer films as carriers of thymol

Zhu

Tang

Yin

et al. 2017

Int J of Food Sci Tech

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“…Since edible films based on proteins have an appealing taste, high nutritional value, good mechanical strength and low permeability, more and more researchers paid their attentions to the development of protein films (Gu et al 2013). Zein is relatively hydrophobic proteins due to their high content of non-polar amino acids (Gioia and Guilbert 1999).…”

Section: Introductionmentioning

confidence: 99%

Improvement of Postharvest Quality and Storability of Jamun Fruit (Syzygium cumini L. var. Paras) by Zein Coating Enriched with Antioxidants

Baraiya

Rao

Thakkar

2015

Food Bioprocess Technol

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Jamun (Syzygium cumin L.) is a minor indigenous underexploited and perishable fruit of India. Keeping its perishability in mind, the present study is aimed to evaluate the effectiveness of zein-based coatings enriched with cystein (0.2 %), ascorbic acid (0.2 %), and jamun leaves extract (JLE) (0.2 %) and to evaluate their interactive effects on shelf life and quality of fresh jamun fruits during storage at 10 ± 2°C for 2 weeks. The results of the present study demonstrated that during storage, uncoated fruit had rapid weight loss, higher decay incidence, high accumulation of sugars, and accelerated softening and ripening than that of all the coated fruit. The content of antioxidants was found to be improved in zeincoated fruits enriched with ascorbic acid (0.2 %) and JLE (0.2 %) and, therefore, exhibited higher antioxidant activity. Moreover, the delayed activity of polygalacturonase (PG) and pectate lyase (PL) was noticed in fruits coated with zein + cystein and zein + JLE and maintained firmness and textural quality of fruit. Consequently, the shelf life of jamun fruit treated with the presently tested coating materials could be extended up to 20 days, while that of control fruit was only 10 days.

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“…It is widely accepted that the amide I band is the envelope of several peaks that correspond to different protein secondary structures, all occurring at different frequencies, due to the different hydrogen bonding patterns and local geometries. The assignment of peaks within the amide envelope was based on spectral 2nd derivative and the work from Zhao et al 42 and Gu et al 52 . Table 1 summarizes the assignment of peaks within the amide I band.…”

Section: Resultsmentioning

confidence: 99%

“…The assignment of peaks within the amide envelope was based on spectral 2nd derivative and the work from Zhao et al 42 and Gu et al. 52 Table 1 summarizes the assignment of peaks within the amide I band.…”

Section: Pm-zein and M-zein Films (Without Cutin)mentioning

confidence: 99%

Water‐repellent films from corn protein and tomato cutin

Hood

Laredo

Marangoni

et al. 2021

J of Applied Polymer Sci

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Flexible and hydrophobic biobased films were obtained using zein esterified with methanol and para-toluene (p-toluene) sulfonic acid, cutin from tomato peels and ethanol. Esterification was confirmed by proton nuclear magnetic resonance and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR). Non-modified zein films were brittle and hydrophilic. ATR-FTIR demonstrated that zein esterification increased zein hydrophobicity. Without cutin, esterified zein films were hydrophobic but brittle. Addition of cutin yielded films that were flexible and hydrophobic, as demonstrated by contact angle measurements. Principal component analysis (PCA) of ATR-FTIR data showed that intensities at 3195 cm −1 and 3490 cm −1 were correlated to the relative hydrophobicity of zein films. PCA also showed that films of esterified zein and cutin were more hydrophobic than their counterparts (nonmodified zein without cutin). Optical and scanning electron microscopy demonstrated that esterified zein was compatible with cutin and yielded cohesive films, which did not fracture upon bending.

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Effects of protein interactions on properties and microstructure of zein–gliadin composite films

Cited by 65 publications

References 24 publications

Development and characterisation of polylactic acid–gliadin bilayer/trilayer films as carriers of thymol

Development and characterisation of polylactic acid–gliadin bilayer/trilayer films as carriers of thymol

Improvement of Postharvest Quality and Storability of Jamun Fruit (Syzygium cumini L. var. Paras) by Zein Coating Enriched with Antioxidants

Water‐repellent films from corn protein and tomato cutin

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