Preparation and preservation properties of the chitosan coatings modified with the in situ synthesized nano SiOx

Sun, Tong; Wu, Chao‐ling; Han, Hao; Dai, Yue; Lǐ, Jiànróng

doi:10.1016/j.foodhyd.2015.09.019

Cited by 59 publications

(59 citation statements)

References 19 publications

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“…Essentially, the internal glycogen of S. ocellatus is degraded to acid after death, leading to pH decrease. After that, protein and other nitrogenous substance are decomposed into alkaline material by virtue of its own enzymes and microorganisms, so the pH increases subsequently …”

Section: Resultsmentioning

confidence: 99%

“…To improve the physicochemical and preservation properties of CS coating, Sun et al introduced a modified method of pure CS coating by in situ synthesis of nano SiOx. 6 This method has overcome the disadvantages of nanoparticles, such as the original size and the limited ability to bond with CS. However, the antibacterial properties of the in situ synthesized nano SiOx CS coating need to be further improved.…”

Section: Introductionmentioning

confidence: 99%

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Preparation, physicochemical and preservation properties of Ti/ZnO/in situ SiOx chitosan composite coatings

Wei

Han

et al. 2019

J Sci Food Agric

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BACKGROUND Among nanomaterials, Ti and ZnO nanoparticles are often chosen as preservation materials because of their antibacterial properties. Chitosan, as a natural biopolymer, has potential because of its abundance, compatibility and antibacterial properties. To improve the physicochemical and preservation properties of in situ SiOx chitosan (CS) composite coating, Ti/ZnO/SiOx CS composite coatings were prepared with Ti‐doped ZnO (Ti/ZnO) nanorods and nanoballs. The composite coating structures were characterized by Fourier transform infrared, X‐ray diffraction and scanning electron microscopy, and their physicochemical and preservation properties were determined simultaneously. RESULTS The results show that the Ti/ZnO nanoparticles are beneficial to homogeneous dispersion of in situ synthesized nano SiOx in the CS coating, and that Ti/ZnO nanoballs have better dispersion than Ti/ZnO nanorods. Moreover, strong hydrogen bonds are formed among Ti/ZnO nanoparticles and in situ synthesized nano SiOx and CS molecules, and the primary structure of CS is disorganized. Thereby, the gas permeabilities and mechanical properties of the CS coatings are improved due to modification of Ti/ZnO nanoparticles, and the Ti/ZnO nanoballs/SiOx CS composite coating is optimal. The preservation properties of the CS coatings on Sciaenops ocellatus are significantly improved, and those of Ti/ZnO/in situ SiOx CS composite coatings are superior. CONCLUSION The preservation properties of the CS composite coatings on S. ocellatus are significant, and the Ti/ZnO nanoballs/SiOx CS composite coating is even better. Therefore, the co‐modification method of in situ nanoparticles and antibacterial nanoparticles may be a promising method to improve the preservation properties of CS coatings. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation, physicochemical and preservation properties of Ti/ZnO/in situ SiOx chitosan composite coatings

Wei

Han

et al. 2019

J Sci Food Agric

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“…The strength of the absorption bands at 3452 cm -1 and 1631 cm -1 is relatively weak for CSNS, indicating the decrease of OH number on the surface of nano-SiOx. Figure 1e and f shows new absorption bands at 2920 cm -1 and 2851 cm -1 , which correspond to the stretching vibrations of CH 3 and CH 2 from SDSn (Sun et al, 2016), indicative of the successful modification of the nano-SiOx surface by SDSn. In comparison with the vibrational bands of USNS, the relative intensity of the asymmetric CH 3 and CH 2 stretching band for CSNS became significantly weak.…”

Section: Spectral Characterisation Of Nano-sioxmentioning

confidence: 96%

“…Yu et al . () have reported that the mechanical properties and gas permeability of chitosan coatings were improved by adding nano‐SiOx, and its composite coatings are remarkable on the preservation of the Sciaenops ocellatus (Sun et al ., ). Other oxide materials, including TiO 2 , ZnO and AgO, have also been utilised as potential nanomaterials for improving the preservation properties of nanocomposite coatings (Stoimenov et al ., ; Vicentini et al ., ; Zink et al ., ).…”

Section: Introductionmentioning

confidence: 97%

“…The edible coatings can provide a semipermeable barrier to gases and water vapour, reducing respiration, and water loss (Ghidelli et al, 2014), and their mechanical and barrier properties can be enhanced by adding nanoparticles (Duncan, 2011), especially for gas permeability properties (Bugnicourt et al, 2016). Yu et al (2012) have reported that the mechanical properties and gas permeability of chitosan coatings were improved by adding nano-SiOx, and its composite coatings are remarkable on the preservation of the Sciaenops ocellatus (Sun et al, 2016). Other oxide materials, including TiO 2 , ZnO and AgO, have also been utilised as potential nanomaterials for improving the preservation properties of nanocomposite coatings (Stoimenov et al, 2002;Vicentini et al, 2010;Zink et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Using soy protein SiOx nanocomposite film coating to extend the shelf life of apple fruit

Liu

et al. 2017

Int J of Food Sci Tech

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Preservation properties of soy protein isolate (SPI)/nano‐SiOx composite coatings to apple fruits were investigated. The sodium dodecyl sulfonate‐modified nano‐SiOx (SNS) particles were prepared by the ultrasonic method and the counter‐ion activation method, which products were designated as USNS and CSNS, respectively. The incorporation of CSNS particles was better than USNS to improve the preservation quality of the SPI film. The best conditions for the synthesis of the composite film were as follows: 10% SPI concentration, 0.3% nano‐SiOx dosage and coating time of 60 s. Under these conditions, the climacteric peak of apples was delayed to the fifth week. The apples also had better physiological indices than the control group. Nano‐SiOx particles were inlaid and evenly dispersed into the SPI film coatings. This work provides a simple CaCl2 pre‐activation method to produce SPI film coatings with good dispersion of nano‐SiOx particles for further preservation application of fresh fruits.

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Preparation, characterization and antibacterial mechanism of the chitosan coatings modified by Ag/ZnO microspheres

Wei

et al. 2020

J Sci Food Agric

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BACKGROUND: To improve the physicochemical and antibacterial properties of coatings, the chitosan (CS) coatings were respectively prepared by a casting method with zinc oxide (ZnO) and silver (Ag)/ZnO microspheres as modifiers. The chemical structures and micromorphology of ZnO, Ag/ZnO microspheres and CS coatings were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy and energy dispersive X-ray spectroscopy. Furthermore, using the dominant spoilage bacteria of aquatic products, Shewanella putrefaciens and Pseudomonas aeruginosa, as objects, the antibacterial activities and mechanism of the CS coatings were investigated. RESULTS: The results show that ZnO and Ag/ZnO microspheres are dispersed homogeneously in the CS coatings. After modified by ZnO and Ag/ZnO microspheres, the mechanical properties and antibacterial abilities of the CS coatings are improved, and that of 0.5% Ag/ZnO-CS coating is the optimal. For pure CS coating, the bacterial cell membrane is damaged slightly because of the electrostatic interaction between NH 3+ of CS and the negative charge on bacterial surface. After treated by ZnO-CS composite coating, the bacterial cell membrane is destroyed badly on account of the earlier-mentioned ion interaction and disturbing the synthesis of high molecular weight total protein. CONCLUSION: With regard to Ag/ZnO-CS composite coating, the bacterial cell membrane is damaged seriously and cell contents are completely released due to ion interaction, disturbing the synthesis of high molecular weight total protein and low molecular weight membrane protein. Hence, Ag/ZnO-CS composite coatings are antimicrobial materials and food preservative materials with great potential application.

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Preparation and preservation properties of the chitosan coatings modified with the in situ synthesized nano SiOx

Cited by 59 publications

References 19 publications

Preparation, physicochemical and preservation properties of Ti/ZnO/in situ SiOx chitosan composite coatings

Preparation, physicochemical and preservation properties of Ti/ZnO/in situ SiOx chitosan composite coatings

Using soy protein SiOx nanocomposite film coating to extend the shelf life of apple fruit

Preparation, characterization and antibacterial mechanism of the chitosan coatings modified by Ag/ZnO microspheres

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