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Issue
Korean Journal of Chemical Engineering,
Vol.32, No.2, 354-361, 2015
Chemical functionalization and stabilization of type I collagen with organic tanning agents
Albu MG, Deselnicu V, Ioannidis I, Deselnicu D, Chelaru C
We investigated the interactions between selected organic tanning agents and type I fibrillar collagen as a model fibrillar substrate to enable the fast direct evaluation and validation of interpretations of tanning activity. Type I fibrillar collagen (1%) as gel was used as substrate of tanning and tannic acid, resorcinol- and melamine-formaldehyde and their combination at three concentrations as crosslinking agents (tannins). To evaluate the stability of collagen during tanning, the crosslinked gels at 2.8, 4.5 and 9.0 pHs were freeze-dried as discs which were characterized by FTIR, shrinkage temperature, enzymatic degradation and optical microscopy, and the results were validated by statistical analyses. The best stability was given by combinations between resorcinol- and melamine-formaldehyde at isoelectric pH.
Keywords: Collagen; Organic Tanning Agents; Crosslinking; Stabilization
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