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Method for extracting cinnamomum camphora essential oil through two-stage continuous pressure-variable steam distillation

A technology of steam distillation and linoleum essential oil, which is applied in the direction of essential oil/fragrance, fat production, etc.

Inactive Publication Date: 2018-06-19
JIANGXI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the deficiencies in the steam pressure control process in the existing steam distillation extraction process of cinnamon essential oil, the present invention provides a two-stage continuous pressure variable steam distillation method for extraction of cinnamon essential oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the still still, pack 700kg of processed cinnamon camphor branches and leaves, then close the still still, and start to feed steam. At this time, the steam is regulated, the inlet pressure is controlled at 0.4MPa, and the distillation is maintained at this steam pressure for 6 minutes. The temperature of the still body and the branches and leaves in the still continues to increase until a stable distillation temperature is reached. At this time, the mixed gas of water vapor and linoleum essential oil will pass into the condenser from the distillation kettle. Afterwards, reduce the steam pressure to 0.1MPa, and distill for 90min under the steam pressure. The steam feed was then stopped to end the distillation. After the oil and water in the oil-water separator are completely separated, separate the cinnamon essential oil and weigh the essential oil. The yield of cinnamon essential oil is calculated according to the formula (1):

[0026] Yield of essential oil of ca...

Embodiment 2

[0029] In the still still, pack 700kg of processed cinnamon camphor branches and leaves, then close the still still, and start to feed steam. At this time, the steam is regulated, the inlet pressure is controlled at 0.3 MPa, and the distillation is maintained at this steam pressure for 8 minutes. The temperature of the still body and the branches and leaves in the still continues to rise until it reaches equilibrium. The mixed gas with water vapor and linoleum essential oil is passed into the condenser from the distillation pot. After that, reduce the steam pressure to 0.075 MPa, and distill for 120min under the steam pressure. The steam feed was then stopped to end the distillation. After the oil and water in the oil-water separator are completely separated, separate the cinnamon essential oil and weigh the essential oil. The yield of cinnamon essential oil was calculated according to the formula (1). After calculation, the yield of cinnamon camphor essential oil obtained ...

Embodiment 3

[0031] In the still still, pack 700kg of processed cinnamon camphor branches and leaves, then close the still still, and start to feed steam. At this time, the steam is regulated, the inlet pressure is controlled at 0.4MPa, and the distillation is maintained at this steam pressure for 6 minutes. The temperature of the still body and the branches and leaves in the still continues to increase until a stable distillation temperature is reached. At this time, the mixed gas of water vapor and linoleum essential oil will pass into the condenser from the distillation kettle. Afterwards, reduce the steam pressure to 0.1MPa, and distill for 85min under the steam pressure. The steam feed was then stopped to end the distillation. After the oil and water in the oil-water separator are completely separated, separate the cinnamon essential oil and weigh the essential oil.

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Abstract

The invention discloses a novel method for extracting cinnamomum camphora essential oil through two-stage continuous pressure-variable steam distillation. The method comprises the following specific flow path: adding cinnamomum camphora branches and leaves into a distillation kettle, then closing a feed port of the distillation kettle, and introducing steam from the bottom of the kettle for starting a steam distillation process. The steam pressure of introduced steam is adjusted by a steam pressure adjusting device; the distillation process comprises two continuous distillation stages; in thefirst stage, the steam pressure of the introduced steam is controlled to be 0.3-0.6MPa, and the distillation time is 3-10 min; in the second stage, the steam pressure of the introduced steam is controlled to be 0.05-0.2MPa, and the distillation time is 70-120min. Compared with the existing steam distillation method, the method has the advantages as follows: the steam consumption is reduced, the production energy consumption is reduced, the distillation time is short, and the yield of the essential oil is high, the production efficiency of the cinnamomum camphora essential oil is improved, andthe extraction cost of the cinnamomum camphora essential oil is reduced.

Description

technical field [0001] The invention relates to an extraction method of camphor essential oil, in particular to a method for extracting camphor essential oil by two-stage continuous pressure-variable steam distillation. technical background [0002] Camphor ( Cinnamomum camphora ) is a plant of the genus Cinnamomum lauraceae. Its roots, stems, branches and leaves can be used to extract natural linoleum essential oil. At present, the branches and leaves are mainly used to extract cinnamon camphor essential oil. Natural cinnamon essential oil is rich in linalool, which is an important spice raw material and has a wide range of uses in food flavors and fragrances and daily chemicals. [0003] At present, the extraction methods of camphor essential oil mainly include methods such as steam distillation extraction, organic solvent extraction, microwave-assisted solvent extraction, ultrasonic-assisted solvent extraction, and supercritical carbon dioxide fluid extraction. Organic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
CPCC11B9/027
Inventor 廖圣良郑红富陈尚钘王宗德范国荣司红燕王鹏罗海
Owner JIANGXI AGRICULTURAL UNIVERSITY
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