Publication: Parabens as agents for improving crocetin Esters’ shelf-life in aqueous aaffron extracts
Authors
Maggi, Luaga ; Carmona, Miguel ; Zalacaín, Amaya ; Martínez-Tomé, Magdalena ; Murcia Tomás, María Antonia ; Alonso Díaz-Marta, Gonzalo Luis
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Publisher
MDPI
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DOI
https://doi.org/10.3390/molecules14031160
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info:eu-repo/semantics/article
Description
© 2009 by the authors. This manuscript version is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by/4.0/
This document is the Published version of a Published Work that appeared in final form in Molecules. To access the final edited and published work see https://doi.org/10.3390/molecules14031160
Abstract
The effect of parabens on the shelf-life of crocetin esters and picrocrocin in
aqueous saffron solutions was studied. Degradation of saffron crocetin esters fits a firstorder
kinetics model, and the results indicated that the crocetin (β-D-glucosyl)-(β-Dgentiobiosyl)
esters were more stable than the crocetin di-(β-D-gentiobiosyl) esters
regardless of whether trans and cis isomers were considered. Under all tested conditions
both parabens gave good results, especially propyl paraben that showed a greater influence
on the degradation rate constant, except for cis-crocetin di-(β-D-gentiobiosyl) ester and ciscrocetin
(β-D-glucosyl)-(β-D-gentiobiosyl) ester. In presence of propyl paraben (200
mg/L), the half-life periods of trans-crocetin di-(β-D-gentiobiosyl) ester improved
considerably, up to four-fold. Special attention has been paid to the effect of propyl
paraben on 46 saffrons with different crocetin ester contents. No differences were observed
in terms of picrocrocin. By analysis of variance, it is noteworthy that there were
differences between the mean content of crocetin esters for all analysed saffron, except for
trans-crocetin (β-D-glucosyl)-(β-D-gentiobiosyl) ester.
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Citation
Molecules, 2009, Vol. 14 (3), pp. 1160-1170
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