Abstract
The presence of 14 betalain pigments have been detected by their characteristic spectral properties in flower petals of Christmas cactus ( Schlumbergera x buckleyi). Along with the known vulgaxanthin I, betalamic acid, betanin and phyllocactin (6′- O-malonylbetanin), the structure of a new phyllocactin-derived betacyanin was elucidated by various spectroscopic techniques and carbohydrate analyses as betanidin 5- O-(2′- O-β- D-apiofuranosyl-6′- O-malonyl)-β- D-glucopyranoside. Among the more complex betacyanins occurring in trace amounts, the presence of a new diacylated betacyanin {betanidin 5- O-[(5″- O- E-feruloyl)-2′- O-β- D-apiofuranosyl-6′- O-malonyl)]-β- D-glucopyranoside} has been ascertained. Furthermore, the accumulation of betalains during flower development and their pattern in different organs of the flower has been examined.
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