Isolation and Characterization of Chitin From Shells of the Freshwater Crab Potamon Algeriense

Fadlaoui, Soufiane; Asri, Ouahid El; Lakrat, M.; Addou, Sihame; Omari, Abdelouadoud; Melhaoui, M.

doi:10.15259/pcacd.24.002

Cited by 22 publications

(14 citation statements)

References 54 publications

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“…After demineralization of field crab shell, a harvest of 40.92 percent was achieved, though after deproteinization, a yield of 8.74 percent was gained. After decolorization, 8.27 percent of raw chitin was produced, with 5.89 percent of chitosan derived from crab shells [24,110,111]. Finally, another report on the crustacean source of chitin and chtosan worth mentioning in this review is on snow crab, Chionoecetes opilio.…”

Section: Preparation Of Chitin and Its Subsequent Conversion To Chitosanmentioning

confidence: 95%

A Review of Various Sources of Chitin and Chitosan in Nature

Iber¹,

Kasan²,

Torsabo³

et al. 2022

Journal of Renewable Materials

128

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Chitin was first discovered by its name from the Greek word "chiton", which means "mail coat". It is indeed a polysaccharide made up of naturally occurring acetyl-D-glucosamine monomers. Hatchett was the first researcher who extracted chitin from the shells of mollusks (crabs and lobsters), prawns, and crayfish in 1799. Later in 1811, Henri Braconnot discovered chitin in the cell walls of mushrooms and called it "fungine". Chitin and chitosan are abundant in the biosphere as essential components of many organisms' exoskeletons and as by-products of the global seafood industry. The biopolymer must be deacetylated before chitosan can be produced. It can also be extracted using microbes in a biological extraction procedure. The development of products that take advantage of the bioactivities of the existing primary commercial source of chitin (crustacean) has lagged expectations. Also, the disadvantages of the present commercial source such as seasonality and competition for other uses among others has been one of the driving forces towards seeking alternative sources of chitin and chitosan in nature. This review highlights some of the efforts made by environmental scholars to locate possible commercial sources of chitin and chitosan in nature over time.

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Section: Preparation Of Chitin and Its Subsequent Conversion To Chitosanmentioning

confidence: 95%

A Review of Various Sources of Chitin and Chitosan in Nature

Iber¹,

Kasan²,

Torsabo³

et al. 2022

Journal of Renewable Materials

128

View full text Add to dashboard Cite

show abstract

“…There are many sources from which chitin can be obtained. Examples of frequently used organisms are shrimp, crab, krill and squid [ 13 , 14 , 15 , 16 ]. Another source of chitin is sponge skeleton [ 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Isolation of Chitin from Black Soldier Fly (Hermetia illucens) and Its Usage to Metal Sorption

et al. 2021

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Chitin has become a desirable raw material used in various areas of life. The black soldier fly (Hermetia illucens) can be a source of this substance. In the literature, there are many methods of obtaining chitin but there is no one universal method of isolating it. In this publication, we present various procedures for the isolation of chitin from H. illucens pupal exuviae. The obtained chitin variants were characterized using different techniques (optical and confocal microscopy, FTIR, XRD, EDX, thermogravimetric analysis). The tested chitin isolated with an efficiency of 5.69–7.95% was the α form with a crystallinity degree of 60% and maximum degradation temperature of 392 °C. Furthermore, we characterized the nickel ion biosorption process on chitin and proposed the mechanism of this process to be ion exchange and complexation. There have been no such studies thus far on the isolation of chitin from H. illucens exuviae or on the biosorption of nickel ions on this type of biosorbent. The conducted research can be used to develop the application of chitin as a metal biosorbent that can be obtained with relatively high efficiency and good sorption properties.

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“…The characteristic calcite absorption signal was seen at 1435, 470 cm −1 , which were attributed to CO 3 −2 derived from the CaCO 3 in crab shells leftover sample spectra and dissipated after 32 h of the fermentation process. Moreover, absorption peaks at 1233–1274 cm −1 ascribed to group amide III were no longer visible after 32 h of incubation, according to the absorbent spectrum of crab shells [ 57 ]. Bridge oxygen stretching was ascribed to the absorption band at 1150 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

Bioprocess development as a sustainable platform for eco-friendly alkaline phosphatase production: an approach towards crab shells waste management

Abdelgalil

Abo-Zaid

2022

Microb Cell Fact

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Background There are substantial environmental and health risks associated with the seafood industry's waste of crab shells. In light of these facts, shellfish waste management is critical for environmental protection against hazardous waste produced from the processing industries. Undoubtedly, improved green production strategies, which are based on the notion of "Green Chemistry," are receiving a lot of attention. Therefore, this investigation shed light on green remediation of the potential hazardous crab shell waste for eco-friendly production of bacterial alkaline phosphatase (ALP) through bioprocessing development strategies. Results It was discovered that by utilizing sequential statistical experimental designs, commencing with Plackett–Burman design and ending with spherical central composite design, and then followed by pH-uncontrolled cultivation conditions in a 7 L bench-top bioreactor, an innovative medium formulation could be developed that boosted ALP production from Bacillus licheniformis strain ALP3 to 212 U L−1. The highest yield of ALP was obtained after 22 h of incubation time with yield coefficient Yp/s of 795 U g−1, which was 4.35-fold higher than those obtained in the shake-flask system. ALP activity has a substantial impact on the volatilization of crab shell particles, as shown by the results of several analytical techniques such as atomic absorption spectrometry, TGA, DSC, EDS, FTIR, and XRD. Conclusions We highlighted in the current study that the biovalorization of crab shell waste and the production of cost-effective ALP were being combined and that this was accomplished via the use of a new and innovative medium formulation design for seafood waste management as well as scaling up production of ALP on the bench-top scale.

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Isolation and Characterization of Chitin From Shells of the Freshwater Crab Potamon Algeriense

Cited by 22 publications

References 54 publications

A Review of Various Sources of Chitin and Chitosan in Nature

A Review of Various Sources of Chitin and Chitosan in Nature

Isolation of Chitin from Black Soldier Fly (Hermetia illucens) and Its Usage to Metal Sorption

Bioprocess development as a sustainable platform for eco-friendly alkaline phosphatase production: an approach towards crab shells waste management

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