Extraction and characterization of chitin and chitosan from marine sources in Arabian Gulf

Al‐Sagheer, Fakhreia; Al-Sughayer, M.A.; Muslim, Sahira Nsayef; Elsabeé, Maher Z.

doi:10.1016/j.carbpol.2009.01.032

Cited by 511 publications

(321 citation statements)

References 43 publications

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“…Commercial chitosan samples are typically prepared by the chemical de-N-acetylation of chitin under alkaline conditions [11][12][13][14]. Depending on the source of natural chitin [1,15,16] and the conditions of its production, chitosan preparations can differ in size (average molecular weight; M W ), DA and other physicochemical properties such as polydispersity (M W /M N ), crystallinity or the pattern of acetylation (P A ) [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Biomedical Activity of Chitin/Chitosan Based Materials—Influence of Physicochemical Properties Apart from Molecular Weight and Degree of N-Acetylation

et al. 2011

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Abstract:The physicochemical nature of chitin and chitosan, which influences the biomedical activity of these compounds, is strongly related to the source of chitin and the conditions of the chitin/chitosan production process. Apart from widely described key factors such as weight-averaged molecular weight (M W ) and degree of N-acetylation (DA), other physicochemical parameters like polydispersity (M W /M N ), crystallinity or the pattern of acetylation (P A ) have to be taken into consideration. From the biological point of view, these parameters affect a very important factor-the solubility of chitin and chitosan in water and organic solvents. The physicochemical properties of chitosan solutions can be controlled by manipulating solution conditions (temperature, pH, ionic strength, concentration, solvent). The degree of substitution of the hydroxyl and the amino groups or the degree of quaternization of the amino groups also influence the mechanical and biological properties of chitosan samples. Finally, a considerable research effort has been directed towards developing safe and efficient chitin/chitosan-based products because many factors, like the size of nanoparticles, can determine the biomedical characteristics of medicinal products. The influence of these factors on the biomedical activity of chitin/chitosan-based products is presented in this report in more detail. OPEN ACCESSPolymers 2011, 3 1876

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Section: Introductionmentioning

confidence: 99%

Biomedical Activity of Chitin/Chitosan Based Materials—Influence of Physicochemical Properties Apart from Molecular Weight and Degree of N-Acetylation

et al. 2011

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“…Nessa et al (2010) reported that the DDA value obtained ranged from 45 to 73 % although a longer time was applied for the deacetylation process performed once. Other study which is done by Abdou et al (2008) the DDA value of chitosan obtained was up to 90% by performing the deacetylation in an autoclave, while Al Sagheer et al (2009) reported that the chitosan DDA obtained from shrimp shell waste in Arabian Gulf ranged from 88-94% by using traditional method. Nouri et al (2016) also obtained DDA value ranged from 71.02-82.20% for deacetylation using traditional method, while 79.01-88.60% for using microwave method.…”

Section: Degree Of Deacetylation (Dda)mentioning

confidence: 98%

Optimization of shrimp shell waste deacetylation for chitosan production

Ahing¹,

Wid

2016

Int. j. adv. appl. sci

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Chitosan, a versatile natural polymer is an amino polysaccharide prepared by processing shrimp shell waste which involved deacetylation of chitin. To obtain high degree of deacetylation (DDA), several parameters should be performed during alkaline treatment. The present study was undertaken at different time of soaking treatment (once and twice) and temperature (60 o C and 80 o C) to optimize the deacetylation process to produce chitosan with high solubility and degree of deacetylation. It was observed that the highest solubility and degree of deacetylation were obtained when deacetylation process was repeated twice and temperature of 80 o C, with 99.48% and 97.63%, respectively. It can be concluded that by repeating the deacetylation twice with the support of heating treatment, a better quality of chitosan with higher solubility and degree of deacetylation can be produced.

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“…Chitin is the second most abundant naturally-occurring polysaccharide and it is a component of crustaceans shells, cephalopods shell parts (i.e., radulae, beaks, and cuttlebones), insect cuticles, and cell walls of some fungi [1,[43][44][45][46]. Both chitin and chitosan are β (1-4) glycans formed by 2-acetamide-2-deoxy-D-glucopyranose and 2-amino-2-deoxy-D-glucopyranose units (as shown in Figure 1), with (C 6 H 10 O 4 N) n as general chemical formula for this class of biopolymers [47,48].…”

Section: The Chitin Industry Case Studymentioning

confidence: 99%

Aquatic-Derived Biomaterials for a Sustainable Future: A European Opportunity

Nisticò

2017

Resources

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Abstract:The valorization of aquatic-derived biowastes as possible feedstock for the production of value-added chemicals and materials is proposed here as a sustainable alternative compared to the exploitation of the more conventional (fossil) resources. In this context, the comprehension of the opportunity related to the valorization of the shellfish industry biowaste for the production of useful materials, especially focusing on chitin and its derived byproducts, is investigated. The large amount of waste produced each year by the shellfish processing industry seems to be an appealing opportunity for the European market to produce valuable products from underutilized waste. In order to highlight this important market-opportunity, the actual European situation concerning the shellfish volume of production is presented. The industrial processes necessary for the recovery of chitin, chitosan, and their derivatives are largely described, together with a wide description of their peculiar (and interesting) physicochemical properties. Even if nowadays the scientific literature suggests that this class of biopolymers is very appealing, further research is still necessary for overcoming some criticisms still present in the extraction and valorization of such substrates. However, the principles of both circular economy and green chemistry encourage the reduction of such biowastes and their exploitation as an alternative resource for a global sustainable future.

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Extraction and characterization of chitin and chitosan from marine sources in Arabian Gulf

Cited by 511 publications

References 43 publications

Biomedical Activity of Chitin/Chitosan Based Materials—Influence of Physicochemical Properties Apart from Molecular Weight and Degree of N-Acetylation

Biomedical Activity of Chitin/Chitosan Based Materials—Influence of Physicochemical Properties Apart from Molecular Weight and Degree of N-Acetylation

Optimization of shrimp shell waste deacetylation for chitosan production

Aquatic-Derived Biomaterials for a Sustainable Future: A European Opportunity

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