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Phytochemical composition and gastroprotective effect of Feijoa sellowiana Berg fruits from Sicily
Authors: Maria Teresa Monforte, Francesco Lanuzza, Fabio Mondello, Clara Naccari, Simona Pergolizzi, Enza Maria Galati
Number of views: 401
Objective: To assess the fruit of Feijoa sellowiana Berg var. coolidge and gorgiona, cultured in
Sicily, for its gastroprotective effect, in association with performing phytochemical evaluation.
Methods: By means of HPLC, vitamin E complex and polyphenol compounds were determined.
The gastroprotective effect was investigated on ethanol-induced ulcers in rats, with sucralfate
as reference drug. Samples of gastric mucosae, stained by periodic acid-Shiff and haematoxylin/
eosin, were observed by light microscopy.
Results: In pulp and peel samples of both varieties of fruit α, β and γ tocopherols were
identified, while δ was only in var. coolidge. In whole fruit of two varieties, catechin, eriodictyol,
eriocitrin, pyrocatechol, quercetin, rutin, ellagic, gallic and syringic acid were determined.
The fruit showed gastroprotective effect (ulcer index: var. coolidge=1.07, var. gorgiona=1.02).
The efficacy was comparable to that of sucralfate (ulcer index 1.10). Histological examination
confirmed the inhibition of ulcerogenic activity of the ethanol.
Conclusions: Active principles of Feijoa sellowiana can play an important role in human diet
and show beneficial effects on various diseases, particularly those caused by oxidative processes
resulting in cell damage. The amount of polyphenols and vitamin E complex confirms the
nutritional value of this fruit, grown in pedoclimatic condition very different from the origin area.