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Infrared spectroscopy of extracted and acetylated chitin in versatile deep eutectic solvents (DES)

The conventional method to extract the chitin content from the crustacean shells usually uses concentrated acids and alkalis to remove impurities such as calcium carbonate and protein. However, the uses of concentrated acids and alkalis have caused many environmental issues. Deep Eutectic Solvent (D...

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Main Authors:	Daud, Suhardy, Musa, Luqman, Kasim, Farizul Hafiz, Salleh, Mohd Nazry, Mustafa, Nazahah, Ahmad, Zuliahani
Format:	Conference Proceeding
Language:	English
Subjects:	Acetylation Alkalies Alkalizing Calcium carbonate Chitin Chlorides Choline Crustaceans Hydrogen bonds Infrared analysis Infrared spectroscopy Solvents Spectrum analysis Ureas
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creator	Daud, Suhardy Musa, Luqman Kasim, Farizul Hafiz Salleh, Mohd Nazry Mustafa, Nazahah Ahmad, Zuliahani
description	The conventional method to extract the chitin content from the crustacean shells usually uses concentrated acids and alkalis to remove impurities such as calcium carbonate and protein. However, the uses of concentrated acids and alkalis have caused many environmental issues. Deep Eutectic Solvent (DES) is one of the solvents that can be used to extract the chitin content from the crustacean shells. DES has two components namely Hydrogen Bond Donor (HBD) and Hydrogen Bond Acceptor (HBA). In this study, two types of DES have been used are betaine (HBA) - urea (HBD) and choline chloride (HBA) - urea (HBD). The results showed that DES betaine - urea and choline chloride - urea have extracted chitin content of 5.4609 % and 2.0020 % w/w respectively. The extracted chitins were analyzed using infrared spectroscopy method. The values of the degree of acetylation (DA) for the chitins were 103.1699 and 83.4821 respectively.
doi_str_mv	10.1063/5.0090914
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However, the uses of concentrated acids and alkalis have caused many environmental issues. Deep Eutectic Solvent (DES) is one of the solvents that can be used to extract the chitin content from the crustacean shells. DES has two components namely Hydrogen Bond Donor (HBD) and Hydrogen Bond Acceptor (HBA). In this study, two types of DES have been used are betaine (HBA) - urea (HBD) and choline chloride (HBA) - urea (HBD). The results showed that DES betaine - urea and choline chloride - urea have extracted chitin content of 5.4609 % and 2.0020 % w/w respectively. The extracted chitins were analyzed using infrared spectroscopy method. 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subjects	Acetylation Alkalies Alkalizing Calcium carbonate Chitin Chlorides Choline Crustaceans Hydrogen bonds Infrared analysis Infrared spectroscopy Solvents Spectrum analysis Ureas
title	Infrared spectroscopy of extracted and acetylated chitin in versatile deep eutectic solvents (DES)
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