Skip to content
DraconiticResearch
Search Sources API
178,970 studies31 sourcesUpdated 54 min ago
Peer-reviewedCC BY-NC 3.0RSC Advances

Selectivity of acid–base extraction routes and their effects on the structure, physicochemical properties, and adsorption performance of shrimp-shell-derived chitosan

  • Abdul Moiz1,2
  • Rabia Aziz3
  • Abdul Hannan4
  • Muhammad Osama4
  • Tahir Rafique5
  • Khalid M. Khan1
  • Saima Imad5
  • Saba Naz2
  • Albena Lederer6,7
  • Muhammad Imran Malik1,3
7 affiliations
  1. 1H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi Karachi 75270 Pakistan
  2. 2Dr M.A Kazi Institute of Chemistry, University of Sindh Jamshoro-76080 Pakistan
  3. 3Third World Center for Science and Technology, International Center for Chemical and Biological Sciences, University of Karachi Karachi 75270 Pakistan
  4. 4Department of Chemistry, NED University of Engineering & Technology Karachi-75270 Pakistan
  5. 5Applied Chemistry Research Center, PCSIR Laboratories Complex Karachi-75270 Pakistan
  6. 6Department Advanced Macromolecular Structure Analysis, Leibniz-Institut für Polymerforschung Dresden e.V. Hohe Str. 6 D-01069 Dresden Germany
  7. 7Department of Chemistry and Polymer Science, Stellenbosch University Private Bag X1 Stellenbosch 7599 South Africa
Read full textPDFDOICite

Abstract

Chitosan, obtained from crustacean shells, has broad applications for environmental, agricultural, and pharmaceutical industries. In this study, we synthesized several chitosan samples from shrimp shell waste by applying different combinations of acid and alkali treatments during the demineralization, deproteinization, and deacetylation steps. The degree of deacetylation (DD), determined via titration and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), ranged from 70% to 92%. The physicochemical and structural properties of the extracted chitosan were systematically compared with commercial chitosan (CS-Com) by using X-ray diffraction (XRD), ATR-FTIR, field emission scanning electron microscopy with energy-dispersive X-ray spectroscopy (FESEM-EDX), thermogravimetric and differential scanning calorimetry (TGA-DSC), asymmetrical flow field-flow fractionation (AF4), dynamic light scattering (DLS), and Brunauer–Emmett–Teller (BET) surface area analysis. Differences were observed in crystallinity, surface morphology, elemental composition (N/C ratio), porosity, thermal stability, water and fat-binding capacities, solubility, and wettability. Among the samples, CS-2 and CS-5 showed properties most similar to CS-Com. Adsorption studies using chloride and nickel ions as model ions indicated a close relationship between adsorption efficiency and the physicochemical characteristics of chitosan. The acid–base treatment conditions have a major impact on chitosan's solubility, degree of deacetylation, crystallinity, thermal stability, and adsorption performance. The findings provide insights for optimizing chitosan extraction and tailoring the material's properties for biomedical, food, and environmental applications.

Related

  1. Synthesis of colloidal silver-polyphenols nanocomplexes - physicochemical properties, DFT calculation, modeling of adsorption and antibacterial activity
    Ewa Olchowik-Grabarek, Emilia Tomaszewska, Katerina Makarova +3
    Scientific ReportsPeer-reviewedCC BY 4.0Full textMaterials & polymersCrossrefDOAJ
  2. Assessing the Potential of Gabiroba Fruit Waste as an Oil Source via Ultrasound-Assisted Extraction: Physicochemical Parameters, Chemical Profile, and Biological Properties
    Carolina Lilibeth Carvalho de Pinho, Renata Lázara de Araújo, Suelen Ávila +8
    MoleculesPeer-reviewedCC BY 4.0Full textOrganic chemistryCrossrefEurope PMC
  3. Flue Gas Torrefaction of Corn Stover-Densified Fuel: Impacts on Physicochemical Properties and Combustion Performance
    Ping Han, Yang Zhao, Lili Ma +7
    ACS omegaPeer-reviewedCC BY-NC-NDFull textGeneral chemistryEurope PMCCrossref
  4. Ionic Liquid Mixtures in Task-Specific Applications: Linking Composition, Physicochemical Properties, and Performance
    Dorota Warmińska, Iwona Cichowska-Kopczyńska
    Molecules (Basel, Switzerland)Peer-reviewedCC BYFull textCatalysisEurope PMCCrossref
  5. Microcellular Injection-Molded LDPE/Activated Carbon Composites: Material Properties and Arsenic [As(III)/As(V)] Adsorption Performance
    Minyuan Chien, Naveen Bunekar, Tlou Nathaniel Moja +2
    PolymersPeer-reviewedCC BY 4.0Environmental chemistryCrossref

Cite

BibTeXRIS
BibTeX
@article{moiz2026selectivity,
  title = {{Selectivity of acid–base extraction routes and their effects on the structure, physicochemical properties, and adsorption performance of shrimp-shell-derived chitosan}},
  author = {Abdul Moiz and Rabia Aziz and Abdul Hannan and Muhammad Osama and Tahir Rafique and Khalid M. Khan and Saima Imad and Saba Naz and Albena Lederer and Muhammad Imran Malik},
  journal = {RSC Advances},
  year = {2026},
  month = oct,
  doi = {10.1039/d6ra07146e},
  url = {https://doi.org/10.1039/d6ra07146e},
  note = {CC BY-NC 3.0},
}
RIS
TY  - JOUR
TI  - Selectivity of acid–base extraction routes and their effects on the structure, physicochemical properties, and adsorption performance of shrimp-shell-derived chitosan
AU  - Abdul Moiz
AU  - Rabia Aziz
AU  - Abdul Hannan
AU  - Muhammad Osama
AU  - Tahir Rafique
AU  - Khalid M. Khan
AU  - Saima Imad
AU  - Saba Naz
AU  - Albena Lederer
AU  - Muhammad Imran Malik
PY  - 2026
DA  - 2026/10/09
JO  - RSC Advances
DO  - 10.1039/d6ra07146e
UR  - https://doi.org/10.1039/d6ra07146e
AB  - Chitosan, obtained from crustacean shells, has broad applications for environmental, agricultural, and pharmaceutical industries. In this study, we synthesized several chitosan samples from shrimp shell waste by applying different combinations of acid and alkali treatments during the demineralization, deproteinization, and deacetylation steps. The degree of deacetylation (DD), determined via titration and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), ranged from 70% to 92%. The physicochemical and structural properties of the extracted chitosan were systematically compared with commercial chitosan (CS-Com) by using X-ray diffraction (XRD), ATR-FTIR, field emission scanning electron microscopy with energy-dispersive X-ray spectroscopy (FESEM-EDX), thermogravimetric and differential scanning calorimetry (TGA-DSC), asymmetrical flow field-flow fractionation (AF4), dynamic light scattering (DLS), and Brunauer–Emmett–Teller (BET) surface area analysis. Differences were observed in crystallinity, surface morphology, elemental composition (N/C ratio), porosity, thermal stability, water and fat-binding capacities, solubility, and wettability. Among the samples, CS-2 and CS-5 showed properties most similar to CS-Com. Adsorption studies using chloride and nickel ions as model ions indicated a close relationship between adsorption efficiency and the physicochemical characteristics of chitosan. The acid–base treatment conditions have a major impact on chitosan's solubility, degree of deacetylation, crystallinity, thermal stability, and adsorption performance. The findings provide insights for optimizing chitosan extraction and tailoring the material's properties for biomedical, food, and environmental applications.
SN  - 2046-2069
ER  -