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Monomeric and polymeric homogentisic acid solutions were passed through chromomatographic columns of isoelectric and n‐acetylated hide powder collagen. There was no evidence of binding of the unoxidized monomer to the collagen. Autoxidized polymeric homogentisic acid solutions (HGA‐OP), however, were strongly adsorbed. The data are interpreted to indicate that HGA‐OP is a potent tanning agent for hide powder collagen.
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Milch et al. (1961) studied this question.
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