A comparison of chitosan properties after extraction from shrimp shells by diluted and concentrated acids

Heliyon
Mohammed EddyaKhalil El-Hami

Abstract

Chitosan and chitin are mainly extracted from shells of fish such as lobsters, crabs or shrimps. Originally, the raw material and the two compounds are identical. This study aims to show the acid concentration effect on chitosan extraction from shrimp shells between concentrated and diluted acid; on surface morphology, thermal resistance, structural, elemental composition, optical and opto-electronic properties. It also aims to reduce the production time and increase the quantity. We focused mainly on comparing between Physico-chemical properties of chitosans extracted by diluted (1M) and concentrated (20%) Chloric acids, and sometimes we compare by other concentrated acids like nitric acid (70%) and sulphuric acid (98%). We performed the product's characterization by various tools such as: X-ray diffraction (XRD) spectroscopy, X-ray fluorescence (XRF) analysis, UV-Visible spectroscopy, Fourier Transformed Infra-Red (FTIR), Raman Spectroscopy, Thermogravimetry and Derivative Thermogravimetry (TG/DTG), Scanning Electron Microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX) analysis. The elemental analysis (XRF and EDX). The results showed that all chitosan samples we gained are good about 80% degree of deacetylation, and ...Continue Reading

Citations

Jan 10, 2021·International Journal of Molecular Sciences·Grzegorz KaliszAnna Sroka-Bartnicka
Nov 14, 2020·Carbohydrate Polymers·Mikhail V TsurkanHermann Ehrlich
Sep 4, 2021·Materials Science & Engineering. C, Materials for Biological Applications·Swati SharmaAniruddha Roy

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Methods Mentioned

BETA
acetylation
X-ray
Scanning Electron Microscopy
X-Rays

Software Mentioned

FullProf

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