Mr. Vancalsteren et al., SPECTROSCOPIC CHARACTERIZATION OF CROCETIN DERIVATIVES FROM CROCUS-SATIVUS AND GARDENIA-JASMINOIDES, Journal of agricultural and food chemistry, 45(4), 1997, pp. 1055-1061
Crocetin derivatives were extracted and purified from saffron stigmas
and gardenia fruits by reversed-phase HPLC. They were characterized by
1D and 2D H-1 and C-13 NMR and UV-vis spectroscopies and mass spectro
metry. The following compounds were found in saffron: all-trans-crocet
in di(beta-D-gentiobiosyl) ester la, all-trans-crocetin beta-D-gentiob
iosyl-beta-D-glucosyl ester Ib, all-trans-crocetin di(beta-D-glucosyl)
ester Ic, and all-trans-crocetin mono(beta-D-gentiobiosyl) ester Id,
as well as 13-cis-crocetin di(beta-D-gentiobiosyl) ester 2a and 13-cis
-crocetin beta-D-gentiobiosyl-beta-D-glucosyl ester 2b. Compounds la,
Ib, and Id were also present in gardenia, in addition to all-trans-cro
cetin mono(beta-D-glucosyl) ester le.