Phenolic extracts from wild edible plants to control postharvest diseases of sweet cherry fruit

Autor: Antonio Ippolito, Donato Di Venere, M.A. Gatto, L. Sergio
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Postharvest biology and technology
120 (2016): 180–187. doi:10.1016/j.postharvbio.2016.06.010
info:cnr-pdr/source/autori:Maria Antonia Gatto, Lucrezia Sergio, Antonio Ippolito, Donato Di Venere/titolo:Phenolic extracts from wild edible plants to control postharvest diseases of sweet cherry fruit/doi:10.1016%2Fj.postharvbio.2016.06.010/rivista:Postharvest biology and technology (Print)/anno:2016/pagina_da:180/pagina_a:187/intervallo_pagine:180–187/volume:120
DOI: 10.1016/j.postharvbio.2016.06.010
Popis: Postharvest treatments with extracts from two wild edible plants ( Orobanche crenata and Sanguisorba minor ), water solutions of two inorganic salts (calcium chloride, CaCl 2 , and sodium bicarbonate, NaHCO 3 ), and their combination (i.e., extracts with added CaCl 2 or NaHCO 3 ), were assayed to control sweet cherry postharvest diseases. Three extract concentrations for each plant were assayed, corresponding to 0.170, 0.340, and 0.510 g dry matter/mL and to 0.125, 0.250, and 0.500 g dry matter/mL for S. minor and O. crenata , respectively. At the lowest and the highest concentrations tested, S. minor extract was able to inhibit rot development in stored fruit by 79 and 89%, respectively, with an efficacy comparable to that of CaCl 2 and NaHCO 3 ; for O. crenata extract such inhibition ranged between 64 and 76%, respectively. A dose effect was observed only for O. crenata . Moreover, the level of control was not improved by the combined application of plant extracts and salts. HPLC analysis of O. crenata extract showed verbascoside as the main phenolic compound, being about 95% of total phenolics; S. minor phenolic pattern appeared to be more complex, due to the presence of caffeic acid derivatives, quercetin-3-glucoside, kaempferol-3-glucoside and other quercetin, kaempferol, and luteolin derivatives, as well as many other unidentified compounds. Residues of phenolics resulting from plant extracts in treated sweet cherries after storage were below the analytical limit of detection. The study demonstrated that S. minor and O. crenata extracts might represent an alternative organic mean for controlling sweet cherry postharvest decay.
Databáze: OpenAIRE