Method for extracting rose essential oil, rose water and rose aqueous extract from fresh rose flower

Abstract

The invention discloses a method for extracting rose essential oil, rose water and a rose aqueous extract from fresh rose flowers. The method includes the following steps: (1) soaking freshly picked roses with softened water; (2) beating the system obtained in the step (1) to obtain a flower slurry; (3) sending the flower slurry from a feeding port of a rotating cone distillation column into the body and introducing steam from the bottom of the rotating cone distillation column, wherein the steam extracts volatile aroma components in the flower slurry during the rising process, then moves out of the rotating cone distillation column and is condensed to obtain a rose oil-water mixture; and acquiring the rose dreg and liquid mixture from the bottom of the rotating cone distillation column; (4) conducting oil and water separation on the rose oil-water mixture to obtain an upper layer separating medium rose essential oil and a lower layer separating medium rose water; and (5) filtering the rose dreg and liquid mixture to obtain a filtrate, and concentrating the filtrate to obtain the rose aqueous extract. The invention can avoid the degradation of recycled aroma substances or raw materials and solve the problem that steam distillation method for extracting essential oil produces stewing smell.

Description

technical field [0001] The invention relates to a method for extracting rose essential oil, rose water and rose water extract from rose flowers. Background technique [0002] Rose (Rosa rugosa thunb.) is an upright deciduous shrub in the Rosaceae family (Rosaceae). It has bright colors, pleasant aroma and high oil content. It is an important special economic plant in my country. It is an important raw material for wood and food industry, spice industry, etc. The medicinal use of roses has a history of more than two thousand years in my country. "Materia Medica Justice" records: "The fragrance of roses is the strongest, clear but not turbid, harmonious but not fierce, softening the liver and refreshing the stomach, promoting qi and blood, and there are almost no other fragrances." Modern pharmacological analysis shows that roses contain phenols, phenylethyl alcohol, nerol, organic acids, red pigments, yellow pigments, waxes, and carotene. [0003] Rose essential oil is a na...

AI Technical Summary

Problems solved by technology

[0005] At present, the most commonly used method for extracting rose essential oil is steam distillation. The rose essential oil extracted by this method must undergo high-temperature steam distillation. High temperature will destroy some heat-sensitive aroma components in rose essential oil, and at the same time, it will produce some cooking odors and reduce the quality of the essential oil.