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Enzymatic and Chemical Cross-Linking of Bacterial Cellulose/Fish Collagen Composites—A Comparative Study
Abstract
This article compares the properties of bacterial cellulose/fish collagen composites (BC/Col) after enzymatic and chemical cross-linking. In our methodology, two transglutaminases are used for enzymatic cross-linking—one recommended for the meat and the other proposed for the fish industry—and pre-oxidated BC (oxBC) is used for chemical cross-linking. The structure of the obtained composites is characterized by scanning electron microscopy, thermogravimetric analysis, X-ray diffraction, and Fourier transform infrared spectroscopy, and their functional properties by mechanical and water barrier tests. While polymer chains in uncross-linked BC/Col are intertwined by H-bonds, new covalent bonds in enzymatically cross-linked ones are formed—resulting in increased thermal stability and crystallinity of the material. The C2–C3 bonds cleavage in D-glucose units, due to BC oxidation, cause secondary alcohol groups to vanish in favor of the carbonyl groups’ formation, thus reducing the number of H-bonded OHs. Thermal stability and crystallinity of oxBC/Col remain lower than those of BC/Col. The BC/Col formation did not affect tensile strength and water vapor permeability of BC, but enzymatic cross-linking with TGGS improved them significantly.
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Authors (5)
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Paulina Dederko-Kantowicz
- Instytut Hodowli i Aklimatyzacji Roślin, Państwowy Instytut Badawczy Oddział w Boninie
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
no. 22,
ISSN: 1661-6596 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Sommer A., Dederko-Kantowicz P., Staroszczyk H., Sommer S., Michalec M.: Enzymatic and Chemical Cross-Linking of Bacterial Cellulose/Fish Collagen Composites—A Comparative Study// INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES -Vol. 22,iss. 7 (2021), s.3346-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/ijms22073346
- Sources of funding:
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- IDUB
- Verified by:
- Gdańsk University of Technology
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