Chitosan extracted from mud crab (Scylla olivicea) shells: physicochemical and antioxidant properties

Sarbon, Norizah Mhd; Sandanamsamy, S.; Sijam, Kamaruzaman; Ahmad, Fisal

doi:10.1007/s13197-014-1522-4

Cited by 97 publications

(64 citation statements)

References 20 publications

(34 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The higher ash content was due to high mineral content left in chitosan which could be due to poor demineralization process when using low concentration of HCl. Low concentration of HCl used in the process of demineralization reduced the effectiveness in removing all minerals from chitin, thus produced higher ash content 27 .…”

Section: Ash Contentmentioning

confidence: 99%

Chitosan Isolated from Horseshoe Crab Tachypleus gigas from the Malay Peninsula

Kassim¹,

Murni²,

Razak³

et al. 2018

Orient. J. Chem

View full text Add to dashboard Cite

Chitosan that was isolated from horseshoe crabs, Tachypleus gigas, for this study were from estuary area in Balok Pahang (East coast) and Muar Johor (West coast) of the Malay Peninsula. The isolation of chitosan was carried out by chemical processes involving deproteinization, demineralization and deacetylation. Physicochemical properties and antibacterial activity were analysed to determine its potential commercialization. The degree of deacetylation (DD) was higher for samples from Balok than Muar (42.4% and 35.2% respectively), but lesser than the commercial grade. There was no significant difference (p>0.05) in the physicochemical properties but obviously they had lesser moist (1.11±0.22 -1.25±0.13%), higher ash content (1.99±0.06 -2.37±0.07%), and low in its solubility (58.00±9.63 -61.70±1.35%) as well as viscosity (52.52±5.38 -64.37±4.73 cP) if compared with commercial chitosan. Chitosan from both field sites also showed great antibacterial activities which concentration dependent against Staphylococcus aureus and Eschericia coli.

show abstract

Section: Ash Contentmentioning

confidence: 99%

Chitosan Isolated from Horseshoe Crab Tachypleus gigas from the Malay Peninsula

Kassim¹,

Murni²,

Razak³

et al. 2018

Orient. J. Chem

View full text Add to dashboard Cite

show abstract

“…Although, by considering a chitosan extraction yield of ca. 40-50% [76], the recovery of these biopolymers from such biowaste seems to be a very promising route.…”

Section: Chitin: a European Opportunitymentioning

confidence: 99%

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

Nisticò

2017

Resources

View full text Add to dashboard Cite

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.

show abstract

“…Water binding capacity (WBC) was determined following a slight modification of the method reported by Sarbon et al [14]. Samples (0.1 g) were diluted with distilled water (10 ml) and heated in water bath (60 o C, 30 min).…”

Section: Water Binding Capacitymentioning

confidence: 99%

Effect of deacetylation on functional properties of glucomannan

Wardhani¹,

Puspitosari²,

Ashidiq³

et al. 2017

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. Glucomannan is one of the highest viscosity polysaccharides with high water absorbing capacity. This property limits glucomannan applications; hence, it requires modifications. Glucomannan has 5-10% acetyl group which confers its functional properties. Replacing the acetyl with alkali transforms the functional characteristic of modified glucomannan. The aim of this study was to determine the effect of deacetylation conditions on the functional properties of glucomannan of A. oncophyllus. Effects of concentration of Na 2 CO 3 (0.1-0.5 M), reaction time (1-5 h) and temperature deacetylation o C) were studied on glucomannan solubility, viscosity and water binding capacity (WBC). Deacetylation conditions affected solubility, viscosity and WBC of deacetylated glucomannan differently. Concentration of Na 2 CO 3 showed negative impact on solubility, viscosity and WBC of deacetylated glucomannan. Solubility increased with increasing temperature and extending duration of deacetylation. Meanwhile, temperature and reaction time were in a reverse relation with viscosity. These changes of functional properties could be due to removing the acetyl groups and subsequently replacing with the alkali during deacetylation. However, the effect of this replacement to the functional properties of deacetylated glucomannan was not linear with the deacetylation conditions. This could be due to various removal distributions of acetyl groups during glucomannan deacetylation.

show abstract

Chitosan extracted from mud crab (Scylla olivicea) shells: physicochemical and antioxidant properties

Cited by 97 publications

References 20 publications

Chitosan Isolated from Horseshoe Crab Tachypleus gigas from the Malay Peninsula

Chitosan Isolated from Horseshoe Crab Tachypleus gigas from the Malay Peninsula

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

Effect of deacetylation on functional properties of glucomannan

Contact Info

Product

Resources

About