Effect of citric acid induced crosslinking on the structure and properties of potato starch/chitosan composite films

Wu, Hejun; Lei, Yanlin; Lu, Junyu; Zhu, Rui; Xiao, Di; Jiao, Chun; Xia, Rui; Zhang, Zhiqing; Shen, Guanghui; Liu, Yuntao; Li, Shanshan; Li, Meiliang

doi:10.1016/j.foodhyd.2019.105208

Cited by 273 publications

(183 citation statements)

References 47 publications

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“…If DAS and MMT are incorporated into the TPS film, the endotherm peak becomes weaker and is shifted to higher temperatures due to an increase in the rigidity of the crosslinked starches. Several papers ascribed this peak to water evaporation during the first heating cycle; this peak did not appear during the second scan. However, the endotherm peak is obviously related to the well recognized gelatinization temperature of starch.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and properties of thermoplastic starch/montmorillonite composite using dialdehyde starch as a crosslinker

Peidayesh

Ahmadi

Khonakdar

et al. 2020

Polymer International

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The poor mechanical properties and high water solubility of biodegradable thermoplastic starch (TPS) represent the main disadvantages of TPS in many applications. In this work, TPS film was prepared from a water solution of corn starch modified by 5 wt% dialdehyde starch (DAS) as crosslinking agent and 3 wt% montmorillonite (MMT) as reinforcing additive. Interactions occurring in the TPS films were investigated by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, XRD, DSC, dynamic mechanical thermal analysis (DMTA) and TGA. The results obtained fom FTIR spectroscopy and DSC suggest the formation of hydrogen bond interactions between the hydroxyl group of starch, DAS, the MMT layers and glycerol. DMTA indicated that the relaxation of films with DAS and MMT appears in a higher and broader temperature range due to the starch backbone stiffness; the extreme increase in the storage modulus confirmed the suggested interactions. The determination of the weight loss of the films in water indicated a significant increase of the water resistance of TPS due to incorporation of DAS and MMT. Changes in mechanical properties of the films containing DAS and clay were determined, showing a substantial increase in tensile strength from 2.7 to 6.7 MPa, while Young's modulus increased by 15 times for TPS modified with 5% DAS and 3% MMT. Therefore, the outcomes of this study confirmed that DAS is a suitable biomacromolecule crosslinker for starch and can significantly enhance TPS and TPS/MMT properties. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Fabrication and properties of thermoplastic starch/montmorillonite composite using dialdehyde starch as a crosslinker

Peidayesh

Ahmadi

Khonakdar

et al. 2020

Polymer International

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“…For all cross-linked microparticles, with the exception of the sample MP5704, most of the sharp peaks disappeared, the characteristic peaks of the chitosan became wider and weaker, and a new peak was observed at 37 • . These changes demonstrated that the crystallinity of the batches decreased, a fact that can be attributed to the strong interaction of chitosan with citric acid, which impairs the molecular order within the particles [28,29]. The X-ray diffraction pattern of MP5704 was closest to that of the non-cross-linked sample, indicating a low degree of polymer cross-linking.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

“…The ability of the chitosan-based drug carriers to sorb and release guest active substances is significantly influenced by the conditions involved in the cross-linking process such as the chitosan-to-cross-linker ratio, pH, and temperature. Several literature reports have been devoted to chitosan films and gels cross-linked with citric acid that differ in terms of design and applications [25][26][27][28][29]. A limited number of literature reports focus on the effect of the conditions involved in the preparation process on the characteristics of the produced chitosan microspheres and microparticles cross-linked by the non-toxic and biocompatible citric acid.…”

Section: Introductionmentioning

confidence: 99%

Modulation of Entrapment Efficiency and In Vitro Release Properties of BSA-Loaded Chitosan Microparticles Cross-Linked with Citric Acid as a Potential Protein–Drug Delivery System

et al. 2020

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Microparticles, aimed for oral protein and peptide drug delivery, were prepared via emulsion cross-linking using citric acid as cross-linker and polyglycerol polyricinoleate as surfactant. A comparative study of the interaction between chitosan and citric acid and its effect on the resulting microparticle properties was performed using different chitosan-to-cross-linker mass ratios and pH-values during fabrication of the microparticles. Non-cross-linked and cross-linked microparticles were studied in terms of size (4–12 μm), zeta potential (−15.7 to 12.8 mV), erosion (39.7–75.6%), a model protein encapsulation efficiency (bovine serum albumin) (6.8–27.6%), and loading capacity (10.4–40%). Fourier transform infrared spectroscopy and X-ray diffraction confirmed the ionic interaction between the protonated amine groups of chitosan and the carboxylate ions of the cross-linking agent. Scanning electron microscopy revealed that the non-cross-linked microparticles had an uneven shape with wrinkled surfaces, while the cross-linked formulations were spherical in shape with smooth surfaces. On the basis of these data, the role of the surfactant and microparticle structure on the release mechanism was proposed. Control of the microparticle shape and release mechanisms is expected to be crucial in developing carriers for the controlled delivery of proteins and peptides.

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“…Therefore, biopolymers, such as Ch and P, can be considered good candidates to formulate biopolymer blends for the development of edible coatings and films, also at an industrial scale, because of their biodegradability, non-toxicity, and film-forming ability [ 24 , 25 , 26 ]. An interesting study investigated the best processing conditions for Ch:P blends, produced through a casting method [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…An interesting study investigated the best processing conditions for Ch:P blends, produced through a casting method [ 20 ]. Another interesting study documented the possibility to form edible solvent-casting Ch:P films using citric acid as cross-linking agent [ 25 ]. Both studies concluded that Ch:P blend films are good candidates for the formulation of edible packaging materials, optimizing the final properties also through the use of a suitable naturally occurring cross-linking agent.…”

Section: Introductionmentioning

confidence: 99%

Bionanocomposite Films Containing Halloysite Nanotubes and Natural Antioxidants with Enhanced Performance and Durability as Promising Materials for Cultural Heritage Protection

et al. 2020

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In the last decade, the interest toward the formulation of polymer films for cultural heritage protection continuously grew, and these films must be imperatively transparent, removable, and should not react/interact with surface of the artworks. In this research, bionanocomposite films, based on chitosan (Ch) and pectin (P) and containing naturally occurring fillers and antioxidants, were formulated by solvent casting methods and were accurately characterized. The natural halloysite nanotubes (HNT) have a two-fold role, specifically, physical compatibilizer and antioxidant carrier. Therefore, the theoretical solubility between Ch and P was estimated considering Hoy’s method for solubility of polymers, while the optimum ratio between biopolymer constituents was assessed by ζ-potential measurements. The transparency, wettability, and mechanical behavior of Ch:P films, also in presence of HNT without and with antioxidants, were investigated. The beneficial effects of natural antioxidants, such as vanillic acid (VA) and quercetin (Q), on Ch:P/HNT durability were found.

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Effect of citric acid induced crosslinking on the structure and properties of potato starch/chitosan composite films

Cited by 273 publications

References 47 publications

Fabrication and properties of thermoplastic starch/montmorillonite composite using dialdehyde starch as a crosslinker

Fabrication and properties of thermoplastic starch/montmorillonite composite using dialdehyde starch as a crosslinker

Modulation of Entrapment Efficiency and In Vitro Release Properties of BSA-Loaded Chitosan Microparticles Cross-Linked with Citric Acid as a Potential Protein–Drug Delivery System

Bionanocomposite Films Containing Halloysite Nanotubes and Natural Antioxidants with Enhanced Performance and Durability as Promising Materials for Cultural Heritage Protection

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