Authentication of "Cereza del Jerte" sweet cherry varieties by free zone capillary electrophoresis (FZCE).

Abstract:

:The purpose of this work was to develop a procedure based on protein analysis by free zone capillary electrophoresis (FZCE) that can be used as an alternative to other methods in the determination of sweet cherry varieties for the authentication of "Cereza del Jerte". Two autochthonous varieties of sweet cherry type "Picota", 'Ambrunés' and 'Pico Negro', and the foreign variety 'Sweetheart' were used in the study. Two protocols for extracting the methanol-soluble proteins were tested. On the basis of the results, direct evaporation with nitrogen of a methanol extract was included in the extraction protocol for routine analysis. This method was found to give excellent repeatability of the corrected migration time (CMT), and showed greater effectiveness in discriminating sweet cherry varieties than the SDS-PAGE technique. Three peaks found in the FZCE electropherograms were investigated as a basis for discriminating between varieties. In addition, the FZCE analysis of methanol-soluble proteins provides information about the physico-chemical parameters relevant to the sensorial quality of the sweet cherries.

journal_name

Food Chem

journal_title

Food chemistry

authors

Serradilla MJ,Martín A,Aranda E,Hernández A,Benito MJ,Lopez-Corrales M,Córdoba Mde G

doi

10.1016/j.foodchem.2008.03.084

subject

Has Abstract

pub_date

2008-11-15 00:00:00

pages

457-61

issue

2

eissn

0308-8146

issn

1873-7072

pii

S0308-8146(08)00380-4

journal_volume

111

pub_type

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