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By Pericles Markakis

ISBN-10: 0323157904

ISBN-13: 9780323157902

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P. 403. Elsevier, Amsterdam. , and Delaporte, B. (1978b). Bull. Liaison-Groupe Polyphenols 8, 305. , and Dubois, J. E. (1974). J. Org. Chem. 39, 1137. , and Dubois, J. E. (1977). J. Am. Chem. Soc. 99, 1359. , and EI Hage Chahine, J. M. (1980a). Bull. Liaison-Groupe Polyphenols 9, 77. , and EI Hage Chahine, J. M. (l980b). J. Am. Chem. Soc. 102,5375. , and Dubois, J. E. (1978). J. Am. Chem. Soc. 100,6202. , EI Hage Chahine, J. , and Dubois, J. E. (1979). J. Chim. Phys. 76,273. Crampton, M. R. (1969).

And Dubois, J. E. (1977). J. Am. Chem. Soc. 99, 1359. , and EI Hage Chahine, J. M. (1980a). Bull. Liaison-Groupe Polyphenols 9, 77. , and EI Hage Chahine, J. M. (l980b). J. Am. Chem. Soc. 102,5375. , and Dubois, J. E. (1978). J. Am. Chem. Soc. 100,6202. , EI Hage Chahine, J. , and Dubois, J. E. (1979). J. Chim. Phys. 76,273. Crampton, M. R. (1969). Adv. Phys. Org. Chem. 7, 211. Dean, F. M. (1963). "Naturally Occurring Oxygen Ring Compounds," p. 388. Butterworth, London. Dubois, J. , and Dreyfus, M.

In the latter case, it would be interesting to carry out the same experiment in the light, since it is well known (Timberlake and Bridle, 1965) that light favors the cyclization process by decreasing the value of the apparent acidity constant for the flavylium-trans-chalcone equilibrium. It was found that the chalcone content of natural anthocyanins increases markedly with the temperature due to a high endothermicity of the pyrylium ring-opening reaction (Brouillard and Delaporte, 1978b). A large part of the so-called thermal decomposition of anthocyanins could be attributed to the increase of the concentration of the chalcone with the temperature.

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Anthocyanins as Food Colors by Pericles Markakis


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