The effect of degree of deacetylation on the radiation induced degradation of chitosan

Taşkın, Pınar; Canısağ, Hazal; Şen, Murat

doi:10.1016/j.radphyschem.2013.04.007

Cited by 37 publications

(11 citation statements)

References 15 publications

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“…The obtained results clearly indicated that degradation alone having a random character is the effect resulting from irradiation of amylose in the range of 10–50 kGy. Moreover, these findings are consistent with earlier studies on different natural polysaccharides such as carrageenan , konjac glucomannan , cellulose , scleroglucan , chitosan irradiated in solid form. The changes that occur in a native (“solid state”) polysaccharide by exposure to any type of ionizing radiations are the result of both direct action, when it is damaged directly by radiation, and indirect action caused mostly by the products of water radiolysis that react with each other and/or with polysaccharide.…”

Section: Resultssupporting

confidence: 93%

Degradation of amylose by ionizing radiation processing

Nemţanu

Braşoveanu

2016

Starch Stärke

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The current study brings to light new aspects of degradation of polysaccharides by physical methods, namely degradation of amylose exposed in the solid state to the accelerated electron beam, in the presence of oxygen, in the range of 10-50 kGy. Effects of irradiation on amylose were investigated by gel-permeation chromatography, Fourier transform infrared spectroscopy, and scanning electron microscopy. In order to evaluate quantitatively, the radiation degradation of amylose, radiochemical yield of degradation, degradation rate constant, and half value dose of molecular weights were determined. The results indicated the main-chain scission of amylose, which led to the reduction of its molecular weight and molecular weight distribution. Changes of amylose spectral features related to the frequency and intensity of some bands indicated an alteration of the structural integrity induced by the electron beam. The scanning electron micrographs revealed the appearance of smaller fragments by amylose structure disruption as a result of irradiation. Consequently, degradation of amylose in the solid state can effectively be controlled by electron beam irradiation. This novel study may be a useful starting point for preparation or processing of amylose-based matrices by using electron beam treatment.

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Section: Resultssupporting

confidence: 93%

Degradation of amylose by ionizing radiation processing

Nemţanu

Braşoveanu

2016

Starch Stärke

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“…For radiation degradation of chitosan, degradation extent was reported to depend on DDA [24] and initial molecular weight [25] as well as chitosan concentration in solution [17]. It was reported a general tendency that molecular weight distribution of OC obtained by radiation degradation of chitosan in solution is narrower in comparison with that of initial chitosan [17,26].…”

Section: IIImentioning

confidence: 99%

Preparation and Foliar Application of Oligochitosan - Nanosilica on the Enhancement of Soybean Seed Yield

Phú¹,

Du²,

Tuan³

et al. 2017

IJEAB

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“…Pesek et al state that high glucosamine purity is more resistant to heat and the product will have a higher melting point [20]. In addition Taşkın et al state that the compound of low purity contains impurities that will degrade the quality of the product [21].…”

Section: Uv-vis Spectrophotometry Determination Of Glcn Hclmentioning

confidence: 99%

Scylla serrata Forskal as natural source of glucosamine hydrochloride

Fawwaz¹,

Vemilia²,

Mutmainnah³

et al. 2019

jrp

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Glucosamine (GlcN) has great application in the food, cosmetic, pharmaceutical, and biomaterial areas; it is typically produced by hydrolysis in the exoskeletons of marine animals, one of the types of mud crab (Scylla serrata Forskal). Mud crab shells contain chitin and chitosan compounds which can be further derivatives for the production of GlcN HCl. The purpose of this study is to isolate and determine the level of GlcN HCl by hydrolysis of chitin and chitosan from mud crab shell. GlcN HCl was characterized by Fourier Transform Infra-Red (FT-IR) spectrophotometry, and its quantity was analyzed by UV-Vis spectrophotometry. Both methods used GlcN HCl as a standard for comparison and calculation of match factor (MF). The results of this study showed that the samples contain GlcN HCl either chitin or chitosan. FT-IR spectrum of chitin sample appears at wave number 1033 cm-1 , 1532 cm-1 , 3415 cm-1 whereas for chitosan at 1033 cm-1 , 1532 cm-1 , 3356 cm-1. Both sample spectrums showed vibration corresponding to ether (-O-), ethyl (CH2) and amine group (NH). The MF value of sample chitin and chitosan is 933 and 974, respectively; it shows that the resulting spectra are identical with the standard. The GlcN HCl level of sample chitin and chitosan was 553 and 993 mg/g, respectively. It can be concluded that the waste of mud crab shell has high potential as a natural source of GlcN HCl.

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The effect of degree of deacetylation on the radiation induced degradation of chitosan

Cited by 37 publications

References 15 publications

Degradation of amylose by ionizing radiation processing

Degradation of amylose by ionizing radiation processing

Preparation and Foliar Application of Oligochitosan - Nanosilica on the Enhancement of Soybean Seed Yield

Scylla serrata Forskal as natural source of glucosamine hydrochloride

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