Supercritical fluid extraction of glycosylated flavonoids fromPassiflora leaves

Abstract

This work describes the extraction of glycosylated flavonoids from ‘passion fruit’ leaves (Passiflora edulis; Passifloraceae), using carbon dioxide in the supercritical state modified with chloroform, ethyl acetate or short‐chain alcohols. Carbon dioxide modified with 10% methanol was shown to be the best extraction fluid, considering both the yield of the flavonoid extracts and the temperature conditions. The supercritical fluid extracts were compared to those obtained by using a conventional extraction method for Passiflora flavanoids, indicating the advantages of supercritical fluid extraction as an alternative method for the analysis of flavonoids from other ‘passion fruit’ species (P. alata and P. incarnata). © 1997 John Wiley & Sons, Ltd.

Comparative study of Passiflora taxa leaves: I. A morpho-anatomic profile

“…edulis has been widely cultivated in Brazil and Moraes et al (1997) reported that leaves and stems have been used as an adulterant for P. alata, which was included in the first three editions of the Brazilian Pharmacopoeia and was official in the country at that time. Moreover, in Brazil, several Passiflora species are popularly known as 'maracujá', which reinforces the importance of identification and differentiating between them (Beraldo and Kato, 2010).…”

Supercritical carbon dioxide extraction of selected medicinal plants—effects of high pressure and added ethanol on yield of extracted substances

“…The most widely used modifiers are methanol and ethanol, which undergo dipole-dipole interactions and hydrogen-bonding with polar functional groups. A number of SFE applications employing polar modifiers for the extraction of moderately polar to polar natural products have been published, including alkaloids (Heaton et al, 1993), cardiac glycosides (Moore and Taylor, 1996), and various phenolics and phenolic glycosides (Tsuda et al, 1995;Moraes et al, 1997;Tena et al, 1998;Palma et al, 1999Palma et al, , 2000Murga et al, 2000).…”

Morfoanatomia de folhas e caules de Passiflora edulis Sims, Passifloraceae

“…Considerando que o Brasil é o maior produtor mundial de Passiflora edulis Sims, Passifloraceae, (Matsuura et al, 2005) e a crença da população que o maracujá apresenta propriedade calmante, não é surpresa encontrar esta espécie entre as plantas empregadas como adulterantes da droga vegetal oficial, P. alata (Moraes et al, 1997).…”

“…Esta espécie empregada na medicina popular e amplamente cultivada no território nacional tem suas folhas e seus caules muitas vezes utilizados como adulterante de amostras comerciais da droga vegetal oficializada no país, também conhecida como maracujá, Passiflora alata Curtis (Moraes et al, 1997).…”