title: Three-dimensional chitin-based scaffolds from Verongida sponges (Demospongiae: Porifera). Part I. Isolation and identification of chitin.
abstract: Marine invertebrate organisms including sponges (Porifera) not only provide an abundant source of biologically active secondary metabolites but also inspire investigations to develop biomimetic composites, scaffolds and templates for practical use in materials science, biomedicine and tissue engineering. Here, we presented a detailed study of the structural and physico-chemical properties of three-dimensional skeletal scaffolds of the marine sponges Aiolochroia crassa, Aplysina aerophoba, A. cauliformis, A. cavernicola, and A. fulva (Verongida: Demospongiae). We show that these fibrous scaffolds have a multilayered design and are made of chitin. (13)C solid-state NMR spectroscopy, NEXAFS, and IR spectroscopy as well as chitinase digestion and test were applied in order to unequivocally prove the existence of alpha-chitin in all investigated species.
authors.affiliation: Institute of Bioanalytical Chemistry, Dresden University of Technology, 01069 Dresden, Germany. Hermann.ehrlich@tu-dresden.de
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authors.lastname: Ehrlich
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authors.lastname: Ilan
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authors.lastname: Maldonado
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authors.lastname: Muricy
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authors.lastname: Bavestrello
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authors.lastname: Schiaparelli
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authors.lastname: Ereskovsky
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authors.lastname: Schupp
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authors.lastname: Born
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authors.lastname: Worch
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authors.lastname: Bazhenov
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authors.lastname: Kurek
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authors.lastname: Varlamov
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authors.lastname: Vyalikh
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authors.lastname: Kummer
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authors.lastname: Sivkov
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authors.lastname: Molodtsov
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authors.lastname: Meissner
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authors.lastname: Richter
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authors.lastname: Steck
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authors.lastname: Richter
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authors.lastname: Hunoldt
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authors.lastname: Kammer
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authors.initials: S
authors.lastname: Paasch
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authors.lastname: Krasokhin
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authors.lastname: Patzke
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authors.lastname: Brunner
mesh_terms: D000818:Animals; D002686:Chitin / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism; D002688:Chitinases / Q000378:metabolism; D008903:Minerals / Q000378:metabolism; D008968:Molecular Conformation; D011161:Porifera / Q000033:anatomy & histology / Q000737:chemistry*; D013057:Spectrum Analysis; D014242:Trichoderma / Q000201:enzymology
chemical_list: D008903:Minerals; D002686:Chitin; D002688:Chitinases