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 Chemjournal_title
Food chemistryauthors
Serradilla MJ,Martín A,Aranda E,Hernández A,Benito MJ,Lopez-Corrales M,Córdoba Mde Gdoi
10.1016/j.foodchem.2008.03.084subject
Has Abstractpub_date
2008-11-15 00:00:00pages
457-61issue
2eissn
0308-8146issn
1873-7072pii
S0308-8146(08)00380-4journal_volume
111pub_type
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