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Troup, G.J.; Hutton, D.R.; Hunter, C.A.; Hewitt, D.; Mulinacci, N.; Romani, A.; Giaccherini, K. Anon
14th National Congress of the Australian Institute of Physics. Congress abstracts and posters summaries2000
14th National Congress of the Australian Institute of Physics. Congress abstracts and posters summaries2000
AbstractAbstract
[en] Full text: The spices Turmeric (curcuma longa) and Saffron (crocus sativus) have also been used as pigments. The EPR spectrum of each shows a readily detectable free radical signal. EPR spectra of the available pure chief active colorants in solid form also give free radical signals. Curcumin (turmeric) is a 'linear' symmetric phenolic, so is expected to do so. The peptide turmerin (commercially unavailable), containing sulphur, may also contribute to the ESR signal. Crocetin (saffron) is a 'linear' molecule, related to the beta-carotenes, which do not give free radical signals: but it does, presumably because of its particular resonant structure properties
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Australian Institute of Physics (Australia); 125 p; 2000; p. MT14; 14. National Congress of the Australian Institute of Physics. Driving technology through discovery, understanding and innovation; Adelaide, SA (Australia); 10-15 Dec 2000; Available in abstract form only, full text entered in this record
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