Synthesis, characterization and antibacterial activity of new fluorescent chitosan derivatives

Přichystalová, Hana; Almonasy, Numan; Abdel-Mohsen, A.M.; Abdel-Rahman, Rasha M.; Fouda, Moustafa M.G.; Vojtová, Lucy; Kobera, Libor; Spotz, Zdeněk; Burgert, Ladislav; Jančář, J.

doi:10.1016/j.ijbiomac.2014.01.050

Cited by 44 publications

(11 citation statements)

References 23 publications

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“…The first one (45.5 wt%) occurs in the temperature range 50–235 °C. This can be attributed to the decomposition of organic material, referring to removal or oxidation of chitosan polymer . The second mass loss (24.5 wt%) occurs in the range 250–600 °C, and is associated with the transformation of Ca(NO 3 ) 2 ·4H 2 O to CaO …”

Section: Resultsmentioning

confidence: 99%

Calcium/chitosan spheres as catalyst for biodiesel production

et al. 2014

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Section: Resultsmentioning

confidence: 99%

Calcium/chitosan spheres as catalyst for biodiesel production

et al. 2014

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“…The TGA curves indicated that chitosan obtained from G. lucidum fungus is thermally stable like the chitosan obtained from other sources; those such as Ramya et al [26] and Přichystalová et al [27] found a degradation peak at 300°C approximately for chitosan obtained from crab shells and Paulino et al [28], obtained a first degradation peak at 250°C for chitosan produced from chrysalides. Kaya et al [29] obtained chitosan from Colorado potato beetle (Leptinotarsa decemlineata), the temperature at which the maximum degradation of chitosan occurred was 289°C for the chitosan extracted from the adults and 292°C for the chitosan extracted from the larvae, this values are similar to obtain from G. lucidum chitosan.…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 94%

Isolation of chitosan from Ganoderma lucidum mushroom for biomedical applications

Ospina

Álvarez

Sierra

et al. 2015

J Mater Sci: Mater Med

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Chitin biopolymer production and its by-product chitosan show great potential. These biomaterials have great applicability in various fields because they are non-toxic, biodegradable, biocompatible, and have antimicrobial effects. The most common source of chitin and chitosan is the crustaceous shell; however, mushrooms are an alternative source for isolating these biopolymers because their cellular wall has a high content of chitin, which may be transformed into chitosan through a deacetylation reaction. The main objective of this research was to obtain chitosan through the deacetylation of chitin isolated from the Ganoderma lucidum basidiomycetes mushroom, which is obtained through biotechnological culture. The material characterization was performed using X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and an evaluation of cytotoxicity comparing the results obtained with results for commercial chitosan. Protocol results showed that chitosan obtained from this mushroom had a significant similitude with commercial chitosan, yet the one obtained using P2 protocol was the one that rendered the best results: including diffractogram peaks, characteristic infrared analysis bands, and an 80.29 % degree of deacetylation. Cytotoxicity in vitro testing showed that the material was non-toxic; furthermore, it rendered very promising information regarding the evaluation of future applications of this biomaterial in the field of biomedicine.

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“…The chemical structure of chitin (C 8 H 13 O 5 N) n is similar to cellulose, having one hydroxyl group on each monomer substituted with an acetyl amine groups. Chitin is a linear chain composed of (1-4) linked 2-acetamido-2-deoxy-d-glucosamine while chitosan (the main derivative of chitin) is obtained by removing enough acetyl groups from chitin, the actual difference between chitin and chitosan is the acetyl content of the polymer [1,2,[16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%