Induction of flavonoid production by UV-B radiation in Passiflora quadrangularis callus cultures

Effect of Plant Growth Regulators on Callus, Cell Suspension and Cell Line Selection for Flavonoid Production from Pegaga (<i>centella asiatica</i> L. urban)

“…Flavonoids were produced during the exponential phase of the callus growth (Antonigni et al, 2007;Fu et al, 2005;Andreazza et al, 2008 while most of the secondary metabolites were produced when the cultures entered the stationary or death phase (Abbasi et al, 2007;Miguel-Chavez et al, 2003Arias-Castro et al, 1993. Likewise, a similar finding was also observed in the compact callus aggregate of Rhodiola sachalenensis, where high salidroside was produced when it entered the log phase of the cultures (Wu et al, 2003).…”

“…However, in some cases, the production of secondary products did not show a positive correlation with the maximal growth rate of the culture (Jacinda et al, 2008). Various reports have indicated that maximum production of flavonoid's achieved during the active growing stage of the cells (Zhao et al, 2001;Antonigni et al, 2007;Fu et al, 2005). Thus, we studied the effect of PGRs to increase the yield of callus biomass before proceeding to flavonoid production studies in order to prepare enough cells to produce the flavonoids wanted.…”

Chemical composition of hydroethanolic extracts from five species of the Passiflora genus

“…Based on comparison with literature data (Ferreres et al, 2007), compound 10 was assigned as orientin-2"-Oxyloside. Although isoorientin and isovitexin were found as principal constituents in leaves of this species by Antognoni et al (2007), these flavones were not detected in this hidroalcoholic extract. There are few reports about the flavonoids composition of P. quadrangularis.…”

“…P. quadrangularis L. is a wild vine, relatively abundant in some regions of the tropical America. The fruit has a slightly acidic pulp with a pleasant and refreshing aroma (Antognoni et al, 2007). In previous studies by other authors, its hydroalcoholic extract exhibited an anxiolytic effect, but not the aqueous extract (de Castro et al, 2007).…”

Vitamin C and total phenols quantification in calli of native passion fruit induced by combinations of Picloram and Kinetin

“…STELLA & BRAGA (2002) proved that the absence of combination of auxin/cytokine was unable to induce callus in leaf explants of Rudgea jasminoides. ANTOGNONI et al (2007) report the success of 2,4-D (2,4-dichlorophenoxyacetic acid) and KIN for callus induction on different species of genus Passiflora. PINTO et al (2011) also report success in obtaining embryogenic callus of P. edulis with a combination of 2,4-D and BAP (6-benzylaminopurine).…”