Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Recolector de Cienci...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
Recolector de Ciencia Abierta, RECOLECTA
Bachelor thesis . 2024
License: CC BY NC SA
addClaim

Determinación de esteroles en aceites de oliva y otros aceites vegetales

Authors: Del Río Ortiz, Belén;

Determinación de esteroles en aceites de oliva y otros aceites vegetales

Abstract

Sterols, derived from squalene through biosynthetic processes, are central to assess the authenticity and quality in vegetable oils. They are part of the unsaponifiable fraction and form the “fingerprint” of oils, as they are found in different concentrations in each type. The European Union establishes sterol concentration as a parameter of authenticity in vegetable oils, along with total sterol and sterene concentrations. The official method for analyzing these compounds is gas chromatography, allowing the determination of oil authenticity or the detection of fraudulent mixtures between oils of different quality and/or type. The sterol profile also enables us to determine the geographic origin of various oil samples,such as olive oil, and to detect any adulteration. Markers such as the ratio of free to esterified sterols, the concentration of stigmastadienes, and levels of β-sitosterol, campesterol, stigmasterol, and brassicasterol, among others, are essential for detecting fraud in vegetable oils.

Los esteroles, presentes en todos los aceites vegetales, forman parte de la fracción insaponificable y son fundamentales para garantizar la autenticidad y calidad en los aceites vegetales. La Unión Europea establece la concentración de esteroles como un parámetro de autenticidad en los aceites vegetales, así como las concentraciones de esteroles totales y de esterenos. La cromatografía de gases es elmétodo oficial para la analizar estos compuestos, permitiendo determinar la autenticidad de un aceite determinado o detectar mezclas fraudulentas entre aceites de diferente calidad y/o especie. El perfil de esteroles también permite determinar el origen geográfico del aceite de oliva, y detectar si ha sido adulterado. Marcadores como la relación entre esteroles libres y esterificados, la concentración de estigmastadienos, el β-sitosterol, campesterol, estigmasterol y brassicasterol, entre otros, son clave para detectar fraudes en aceites vegetales.

Keywords

2301, Química Analítica, 2301.03, Chromatographic Analysis, Análisis cromatográfico, Analytical Chemistry

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
Powered by OpenAIRE graph
Found an issue? Give us feedback
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green