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Industry | n. phr.
A centrifugation system by the paste, after it has been diluted in a 10-20% proportion of warm water, is then injected into a decanter with two nozzles, through which are separately released slightly humid oil (oily phase) and pomace mixed with water (solid phase).

Example

The six olive oils were obtained six different Spanish traditional factories. Olive oils 1, 2, 3, 4 and 6 were obtained olive trees cultivated in the traditional agricultural system, while olive oil 5 was ecological. Olive oil, 2, 4, 5 and 6 were obtained by the centrifugation two-phase system that preserves the quality of olive oils at high levels with respect to polyphenols and pigments contents (Boskou, 1998) and olive oil 3 by the vestigial old first-pressing system.

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Additional information

the continuous three-phase system was developed in the early 1970s and is now used in approximately 5% of Spanish mills. In Andalusia, this system was replaced in the 1990s by the two-phase system, which is now used by 92% of the oil industry in Spain. This system does not use addition water and therefore does not generate mill wastewater, a major water pollutant. For this reason, it was initially commercialised as an "ecological system".