Chitin and Collagen: Isolation, Purification, Characterization, and Applications, 2nd Edition

A special issue of Polysaccharides (ISSN 2673-4176).

Deadline for manuscript submissions: 28 February 2025 | Viewed by 788

Special Issue Editor

Special Issue Information

Dear Colleagues,

Chitin and collagen are the most important biopolymers in nature. These two biopolymers also exhibit similar hierarchical structural organizations. Chitin is the most abundant amino polysaccharide polymer occurring in nature and has been identified in bacteria, fungi, plants, and marine invertebrates. Chitin can also be enzymatically and and chemically deacetylated to chitosan, a more flexible and soluble biopolymer. It has many applications, including in medical, environmental, and agricultural sectors. Likewise, nature is a source of massive quantities of collagen, especially in marine organisms. Collagen is the main fibrous structural protein in the extracellular matrix and connective tissue of animals. It contributes greatly to biotechnology products and medical applications.

As a Guest Editor of this Special Issue, I invite you to submit recent innovations in these two biopolymers, including original works, reviews, short communications, and innovations in the biological sources and their promising applications

Dr. Azizur Rahman
Guest Editor

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Keywords

  • chitin
  • collagen
  • biopolymers
  • biomineralization
  • biomaterials
  • marine invertebrates
  • proteomics
  • polysaccharides
  • skeletal proteins
  • extracellular proteins

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Published Papers (1 paper)

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Research

22 pages, 5957 KiB  
Article
Impact of the Three-Dimensional Arrangements of Polyhydroxylated Crosslinkers on the Resulting Properties of Chitosan-Based Hydrogels
by Gema Díaz Bukvic, Martin Ojeda Henriquez, Agustín Brandon Rodríguez Vannini, María Marta Fidalgo, Andrés Gerardo Salvay, Ezequiel Rossi and María Inés Errea
Polysaccharides 2024, 5(3), 358-379; https://doi.org/10.3390/polysaccharides5030023 - 3 Aug 2024
Viewed by 538
Abstract
Chitosan was subjected to a crosslinking reaction with three polyhydroxylated diacids (glucaric (GlcA), mannaric (ManA), and mucic (MucA) acids) that only differ in the spatial orientation of their hydroxyl groups. This work aimed to obtain experimental evidence of the impact of the three-dimensional [...] Read more.
Chitosan was subjected to a crosslinking reaction with three polyhydroxylated diacids (glucaric (GlcA), mannaric (ManA), and mucic (MucA) acids) that only differ in the spatial orientation of their hydroxyl groups. This work aimed to obtain experimental evidence of the impact of the three-dimensional arrangement of the crosslinkers on the resulting properties of the products. In all the cases, the products were hydrogels, and their chemical structures were fully elucidated by FT-IR spectroscopy and conductometric titration. Thermogravimetric and morphological studies were also carried out. The specific surface area of all the products was similar and higher than that of native chitosan. Moreover, all hydrogels were characterized in terms of viscoelastic properties and long-term stability under external perturbation. Furthermore, their lead adsorption efficiency and swelling capacity were assessed. Despite the resemblant chemical structure in all the hydrogels, Ch/ManA exhibited the highest lead adsorption capacity, (Ch/ManA: 93.8 mg g−1, Ch/GlcA: 82.9 mg g−1, Ch/MucA: 79.2 mg g−1), while Ch/GlcA exhibited a remarkably higher swelling capacity (i.e., ~30% more than Ch/MucA and ~40% more than Ch/ManA). The results obtained herein evidenced that the selection of the polyhydroxylated crosslinker with the appropriate three-dimensional structure could be crucial to finely adjust the final materials’ features. Full article
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