RESUMENCaracterísticas analíticas de los aceites de oliva producidos por diversas técnicas de extracción con la variedad portuguesa 'Galega Vulgar'.Se han comparado dos líneas de procesamiento de aceite, utilizando un sistema de prensas (SP) o un decantador centrífugo (DC). El procesamiento que recurre al sistema de prensas es un sistema discontinuo que, sin embargo permite obtener aceites vírgenes de gran calidad. Para este estudio se ha utilizado la variedad Portuguesa Galega común. Las aceitunas fueron tratadas contra el ataque de plagas, y recogidas en un punto de maduración predeterminado. Del mismo modo, se evaluó el porcentaje de aceite obtenido de la cosecha. Se han considerado los resultados analíticos teniendo en cuenta la determinación de la influencia de la extracción en el producto final. Este punto ha sido evaluado por medio de un tratamiento estadístico. Aunque se han observado diferencias significativas entre los resultados de algunos de los parámetros analizados, sólo las diferencias verificadas en el grado de acidez son susceptibles de modificar la clasificación final del aceite, situándolo en la categoría lampante.PALABRAS CLAVE: Aceite de oliva -'Galega Vulgar' -Técnicas de extracción -Tecnología. SUMMARY Analytical characteristics of olive oils produced by two different extraction techniques, in Portuguese olive variety 'Galega Vulgar'.A metal hammer-decanter (HD) olive processing line was compared to a traditional metal hammer-press (HP) line, a discontinuous method which, when properly used, yields high-quality virgin olive oils. Galega olives (traditional Portuguese variety) were used. Olives were picked at a predetermined maturation stage and plagues and oil content were evaluated before processing. Years, extraction technology, data replicates, and years*extraction, were taken into account and compared using statistical treatment. In spite of significant differences among the results obtained, only acidity was statistically significant and sufficient for classifying the produced olive oil into a lampante category.
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