A method, device and application for extracting volatile oil from seeds of Nigella species

A technology for plant seeds and Nigella, applied in the field of chemistry, can solve the problems of increased water solubility, high temperature, unfavorable extraction of thermally unstable components and the like

Active Publication Date: 2016-07-13
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the actual extraction process, the temperature of the volatile oil collection part in the device is relatively high, and some low-boiling volatile components are lost, and some small-molecule volatile components increase in water solubility at high temperatures, which is not conducive to the extraction of thermally unstable components.

Method used

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  • A method, device and application for extracting volatile oil from seeds of Nigella species
  • A method, device and application for extracting volatile oil from seeds of Nigella species
  • A method, device and application for extracting volatile oil from seeds of Nigella species

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Embodiment 1

[0025] Weigh 100g of black cumin seed harvested and dried in the same year, crush it with a universal grinder, and pass through a standard screen with an aperture of 0.5mm; put it into a 500mL round-bottomed flask with a standard grinding mouth, and then add 100mL of water to wet 25min; connect the round bottom flask to the decompression microwave-assisted extraction device, adjust the microwave output power to 400W, start the vacuum pump, control the pressure at 0.03-0.05MPa, start the microwave equipment, extract for 3min, and use 6mL n-hexane to self-condense three times Rinse the condensing tube at the top of the tube, wash it directly into the volatile oil layer, separate the n-hexane solution containing volatile oil in the collection part, make it pass through the drying column filled with anhydrous sodium sulfate, add 2 mL of n-hexane from the upper end of the drying column to wash and adsorb on Dry the residual volatile oil in the column, put the dried volatile oil n-he...

Embodiment 2

[0033] Another method for extracting volatile oil from seeds of Nigella genus, comprising the steps of:

[0034] Step 1: Extraction, under the conditions of microwave irradiation power of 700W and pressure of 0.05MPa, extract the volatile oil in the infiltrated pulverized product for 5 minutes, so that the volatile oil is evaporated with water vapor to the condensation device;

[0035]Step 2: Dissolving, washing and dissolving the condensed and refluxed volatile oil with an organic solvent;

[0036] Step 3: drying and removing water, passing the organic solvent dissolved in volatile oil through the organic solvent to dry the water removing agent to remove the water mixed in the organic solvent;

[0037] Step 4: recovery and separation, the dried organic solvent mixed with volatile oil is evaporated under reduced pressure and rotary thin film at 32°C to recover the organic solvent, and the remaining liquid is the volatile oil of Nigella genus seeds.

[0038] The mass percentag...

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Abstract

The invention discloses a method and a device for extracting nigella plant seed volatile oil and an application of the volatile oil. The method comprises the following steps: extracting, namely extracting volatile oil from soaked ground materials under the microwave irradiation power of 400-700W and the pressure of 0.03-0.05MPa, vaporizing out the volatile oil along with water vapor and feeding into a condensation device; dissolving, namely washing and dissolving the condensed and refluxed volatile oil by an organic solvent; drying to remove water, namely removing water from the organic solvent in which the volatile oil is dissolved through an organic solvent drying water remover; recovering and separating, namely recovering the organic solvent by performing reduced-pressure rotary thin film evaporation on the dried organic solvent in which the volatile oil is dissolved at 28-32 DEG C, wherein the rest liquid is the nigella plant seed volatile oil. According to the method, the volatile oil is extracted by virtue of a microwave-assisted extraction method under the reduced-pressure condition, so that the extraction efficiency is remarkably improved. Meanwhile, the obtained volatile oil is better in aroma quality and suitable for spice and essence research.

Description

technical field [0001] The invention relates to a volatile oil extraction method, equipment and application, in particular to a method for extracting volatile oil from the seeds of Nigella genus Ranunculaceae, a related device and the application of the extracted volatile oil, belonging to the field of chemical technology. Background technique [0002] Plants of the genus Nigella are mainly distributed in Asia, Africa and Europe, and the seeds of which are used as medicinal resources mainly include Nigella glandulifera, Nigella sativa and Nigella damascena. Among them, Nigella tumosa is a traditional medicinal material of the Uygur people in my country, and it is the dried and mature seed of Nigella glandularis in the family Ranunculaceae. "The Pharmacopoeia of the People's Republic of China", the pharmacopoeia contains the name Nigellaesemen, which has the main effects of nourishing the kidney and brain, stimulating the menstrual flow, promoting the breast, and diuresis. It ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/02
Inventor 刘学曹光群杨成孙培冬曹莹粲杨嘉龙
Owner JIANGNAN UNIV
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