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. 2015 Dec 11;13(12):7314–7338. doi: 10.3390/md13127068

Figure 1.

Figure 1

Genipin crosslinks chitosan spontaneously at a quite small molar ratio. On the right, two chitosan chains (represented by their structural units) react covalently with one mole of genipin to yield two newly formed chemical functions, namely the monosubstituted amide and the tertiary amine.