Fluorophore browning

Brown, M., Edmonds, T., Miller, J. and Seare, N. (1993). Use of nile red as a long-wavelength fluorophore in dual-probe studies of ligand-protein interactions. J. Fluorescence 3, 129-130. 

Figure 13. Possible structures of the fluorophore in sugar-amine browning. (Reproduced from Ref. 11. Copyright 1972, Institute of Food Technologists.)...

Possible Chemical Nature of the Sugar-amine Fluorophore In sugar-amine browning, the relative amount of the fluorophore is usually low. Adhikari and Tappel found 130 pmoles per mole of glucose based on an assumption of an amino-imino-propene moiety (11). The relative amount of acid reducing power is usually much higher (28). But of course it cannot be assumed, no matter how simple the system, that the polymer-bound fluorophore and reducing power reside in the same molecule. 

Brown JQ, Srivastava R, McShane MJ. Encapsulation of glucose oxidase and an oxygen-quenched fluorophore in polyelectrolyte-coated calcium alginate microspheres as optical glucose sensor systems. Biosensors Bioelectronics 2005, 21, 212-216. 

Fig. 19 Polymer model used in the simulations. Red uncharged monomer units, blue charged monomer units, grey counterions, brown fluorophore...

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