Method for extracting rose essential oil through combination of ultrahigh pressure and steam distillation
The invention discloses a method for extracting rose essential oil through combination of ultrahigh pressure and steam distillation. The method comprises steps as follows: (1), ultrahigh pressure pretreatment: fresh roses are put in a retort pouch, a citric acid aqueous solution is added to the reto...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a method for extracting rose essential oil through combination of ultrahigh pressure and steam distillation. The method comprises steps as follows: (1), ultrahigh pressure pretreatment: fresh roses are put in a retort pouch, a citric acid aqueous solution is added to the retort pouch, and the retort pouch is sealed after uniform mixing; (2), the retort pouch is put in ultrahigh pressure equipment for ultrahigh pressure treatment; (3), after ultrahigh pressure treatment ends, steam distillation is performed. The yield of the rose essential oil is increased by 4.0%-119.05% in the same distillation time by means of an ultrahigh pressure and steam distillation combination technology while compared with that by means of an ordinary steam distillation technology; the content of methyl eugenol in the essential oil is reduced by 75.9%, the extraction speed is high, the quality of the essential oil is high and energy consumption is reduced. |
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