Comparison of nanocrystals and nanofibers produced from shrimp shell α-chitin: From energy production to material cytotoxicity and Pickering emulsion properties
“…Nevertheless, production of stable Pickering emulsions based on biopolymers is relatively challenging; since polysaccharides and some proteins are naturally very hydrophilic hindering the achievement of an intermediate particle wettability and a suitable contact angle at the oil/water interface (Xiao, Wang, Perez Gonzalez, & Huang, 2016). In this context, recent studies have successfully employed cellulose nanocrystals (Errezma, Mabrouk, Magnin, Dufresne, & Boufi, 2018), chitin nanocrystals (Perrin, Bizot, Cathala, & Capron, 2014) and chitin nanofibers (Larbi et al, 2018) Chitosan is a linear polysaccharide, obtained by the deacetylation of chitin, a natural abundant polymer present in the exoskeleton of crustaceans. Chitosan has antibacterial, antifungal and gelling properties.…”
A B S T R A C TRecently, there has been a renewed interest in Pickering emulsions owing to their surfactant-free nature, and the use of natural-based particles as stabilizers became a priority due to the applications they can enable. In this work, chitosan/gum Arabic (CH/GA) nanoparticles were synthesized and tested as novel stabilizers. Among the tested CH/GA weight ratios, the particles prepared using 1:1 ratio exhibited near-neutral wettability, an average size of 108.6 nm and a zeta potential of 56.3 mv. Pickering emulsions prepared from these particle dispersions (1.5% w/v), and high oil volume fractions (φ = 0.6, 0.7), have shown high storage stability. Moreover, confocal laser scanning microscopy confirmed the o/w type and the effective adsorption of the nanoparticles at the oil/ water interface forming a barrier against droplets coalescence. The emulsions have shown shear-thinning and elastic-like behavior. These findings open new avenues for using these emulsions as novel delivery systems, e.g. in cosmetic and food applications.
“…Nevertheless, production of stable Pickering emulsions based on biopolymers is relatively challenging; since polysaccharides and some proteins are naturally very hydrophilic hindering the achievement of an intermediate particle wettability and a suitable contact angle at the oil/water interface (Xiao, Wang, Perez Gonzalez, & Huang, 2016). In this context, recent studies have successfully employed cellulose nanocrystals (Errezma, Mabrouk, Magnin, Dufresne, & Boufi, 2018), chitin nanocrystals (Perrin, Bizot, Cathala, & Capron, 2014) and chitin nanofibers (Larbi et al, 2018) Chitosan is a linear polysaccharide, obtained by the deacetylation of chitin, a natural abundant polymer present in the exoskeleton of crustaceans. Chitosan has antibacterial, antifungal and gelling properties.…”
A B S T R A C TRecently, there has been a renewed interest in Pickering emulsions owing to their surfactant-free nature, and the use of natural-based particles as stabilizers became a priority due to the applications they can enable. In this work, chitosan/gum Arabic (CH/GA) nanoparticles were synthesized and tested as novel stabilizers. Among the tested CH/GA weight ratios, the particles prepared using 1:1 ratio exhibited near-neutral wettability, an average size of 108.6 nm and a zeta potential of 56.3 mv. Pickering emulsions prepared from these particle dispersions (1.5% w/v), and high oil volume fractions (φ = 0.6, 0.7), have shown high storage stability. Moreover, confocal laser scanning microscopy confirmed the o/w type and the effective adsorption of the nanoparticles at the oil/ water interface forming a barrier against droplets coalescence. The emulsions have shown shear-thinning and elastic-like behavior. These findings open new avenues for using these emulsions as novel delivery systems, e.g. in cosmetic and food applications.
“…A second mechanical treatment was specified in GRIND 2 (Mixer module) in order to simulate the ultrafine grinding or high performance/speed mechanical operation for defibrillation. This step required 3 h, with an energy consumption of 0.318 kWh/kg of purified chitin, experimentally determined [1] Fig. 2 Flow sheet of the ChNF preparation process.…”
Section: Experimental Design Materials and Methodsmentioning
confidence: 99%
“…According to the methodology described in [1] , the chitin nanocrystals production process began with a three-step chemical treatment of the previously purified chitin fibers. As detailed in Fig.…”
Section: Experimental Design Materials and Methodsmentioning
confidence: 99%
“…This article contains data related to the research article entitled “Comparison of nanocrystals and nanofibers produced from shrimp shell α-chitin: From energy production to material cytotoxicity and Pickering emulsion properties” [1] . The experimental methodology described herein served as basis for the simulation of chitin purification, chitin nanofibers (ChNFs) and chitin nanocrystrals (ChNCs) production processes for the present data article.…”
Process simulation is a useful tool that has been widely used to analyze, design and optimize energy balances in chemical technologies including those related to biomass processing, biorefinery processes and chemical engineering. The presented data set serves as basis for the simulation of chitin purification, nanofibers and nanocrystals production processes, considering laboratory experimental procedures described in previous experimental articles.
“…The latest studies have revealed that nanochitin can strengthen the barriers of gelatin films to water vapor by loading properties and causing a circuitous course across water molecules [97,101,102]. Chitin nanoparticles extracted from different sources, irrespective of their types and modifications, have been proven to improve water, gas and light barrier properties of composite films [57,84,86,93,97,99,103]. The barrier efficiencies of recorded nano-chitin-reinforced films were assessed using different protocols.…”
Section: Barrier Properties Of Nanochitin-based Compositesmentioning
Industrial sea food residues, mainly crab and shrimp shells, are considered to be the most promising and abundant source of chitin. In-depth understanding of the biological properties of chitin and scientific advancements in the field of nanotechnology have enabled the development of high-performance chitin nanomaterials. Nanoscale chitin is of great economic value as an efficient functional and reinforcement material for a wide range of applications ranging from water purification to tissue engineering. The use of polymers and nanochitin to produce (bio) nanocomposites offers a good opportunity to prepare bioplastic materials with enhanced functional and structural properties. Most processes for nanochitin isolation rely on the use of chemical, physical or mechanical methods. Chitin-based nanocomposites are fabricated by various methods, involving electrospinning, freeze drying, etc. This review discusses the progress and new developments in the isolation and physico-chemical characterization of chitin; it also highlights the processing of nanochitin in various composite and functional materials.
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