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New triterpenic acids produced in callus culture from fruit pulp of Acca sellowiana (O. Berg) Burret

Author:
Verardo, Giancarlo, Gorassini, Andrea, Fraternale, Daniele
Source:
Food research international 2018
ISSN:
0963-9969
Subject:
Acca sellowiana, beta-sitosterol, callus, callus culture, fruit pulp, gas chromatography-mass spectrometry, growth regulators, nuclear magnetic resonance spectroscopy, phloridzin, secondary metabolites, triterpene acids
Abstract:
The aim of this work was the study of the best conditions for obtaining a callus culture from the pulp of Acca sellowiana, and to perform a quali-quantitative analysis of the secondary metabolites yielded by the in vitro callus culture. To this end, callus was induced on both Murashige and Skoog and Gamborg B5 media containing various combinations of growth regulators. Three previously undescribed ursane-type triterpenoids, 2α,3β,6α,23-tetrahydroxy-18α,19α-urs-20-en-28-oic acid, 2α,3β,23-trihydroxy-18α,19α-urs-20-en-28-oic acid and 2α,3β,6β,23-tetrahydroxy-18α,19α-urs-20-en-28-oic acid were isolated from the methanolic extract of A. sellowiana culture and characterized by 1D and 2D NMR experiments. Moreover, the quali-quantitative analysis (ESI-MSn and GC–MS) also showed the presence of β-sitosterol, phloridzin, oleanolic, ursolic, 3β-hydroxy-18α,19α-urs-20-en-28-oic, maslinic, corosolic, 2α,3β-dihydroxy-18α,19α-urs-20-en-28-oic, and tormentic acid.
Agid:
6180527