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A method for extracting geranium oil from geranium leaves with subcritical n-butane fluid

A n-butane and subcritical technology, which is applied in the direction of essential oils/fragrances, fat production, etc., can solve the problems of unfavorable product properties, rough process, and broken products, and achieve high recycling efficiency, complete extraction components, and low production costs Effect

Active Publication Date: 2019-10-15
郑州雪麦龙食品香料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses high temperature (120°C) water extraction, and the process is rough, which will cause product loss and is not conducive to maintaining the properties of the product

Method used

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  • A method for extracting geranium oil from geranium leaves with subcritical n-butane fluid
  • A method for extracting geranium oil from geranium leaves with subcritical n-butane fluid
  • A method for extracting geranium oil from geranium leaves with subcritical n-butane fluid

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for extracting geranium oil from geranium leaves with subcritical n-butane fluid, comprising the steps of:

[0040] 1) First dry the cleaned bay leaves at 55±5°C for 2 to 3 hours until the water content is ≤7wt%, crush them to 40 to 60 mesh, then put them into a 300 mesh bag with a volume of 3L, and weigh 50.30 kilogram;

[0041] 2) Put the bag containing the fragrant leaves in step 1) into the extraction tank, seal it, and heat the extraction tank through the water circulation system. When the heating temperature reaches 55°C, evacuate to a vacuum of 0.1MPa , discharge the air in the extraction tank;

[0042] 3) Introduce n-butane solvent into the extraction tank described in step 2) with a plunger pump, add n-butane and bay leaves with a liquid-to-material volume ratio of 1:1, and submerge the bag with the solvent;

[0043] 4) Start the thermal circulating water system, raise the temperature to 55°C for extraction, the extraction pressure is 0.1MPa, the ext...

Embodiment 2

[0048] A method for extracting geranium oil from geranium leaves with subcritical n-butane fluid, comprising the steps of:

[0049] 1) First dry the cleaned bay leaves at 55±5°C for 2 to 3 hours until the water content is ≤7wt%, crush them to 40 to 60 mesh, then put them into a 300 mesh bag with a volume of 3L, and weigh 50.50 kilogram;

[0050] 2) Put the material bag containing fragrant leaves and 3.58 kg of soybean oil in step 1) into the extraction tank, seal it, and heat the extraction tank through the water circulation system. When the heating temperature reaches 60°C, pump it to The vacuum degree is 0.5MPa, and the air in the extraction tank is discharged;

[0051] 3) Introduce n-butane solvent into the extraction tank described in step 2) with a plunger pump, add n-butane and bay leaves with a liquid-to-material volume ratio of 2:1, and submerge the bag with the solvent;

[0052] 4) Start the thermal circulating water system, raise the temperature to 60°C for extract...

Embodiment 3

[0057] A method for extracting geranium oil from geranium leaves with subcritical n-butane fluid, comprising the steps of:

[0058] 1) First dry the cleaned fragrant leaves at 55±5°C for 2 to 3 hours until the water content is ≤7wt%, crush them to 40 to 60 mesh, then put them into a 300 mesh bag with a volume of 3L, and weigh 50.10 kg ;

[0059] 2) Put the material bag containing fragrant leaves and 14.43 kg of soybean oil in step 1) into the extraction tank, seal it, and heat the extraction tank through the water circulation system. When the heating temperature reaches 56 ° C, pump To a vacuum of 0.25MPa, discharge the air in the extraction tank;

[0060] 3) Introduce n-butane solvent into the extraction tank described in step 2) with a plunger pump, add n-butane and bay leaves with a liquid-to-solid volume ratio of 1.5:1, and submerge the bag with the solvent;

[0061] 4) Start the thermal circulating water system, raise the temperature to 56°C for extraction, the extracti...

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Abstract

The invention relates to a method of extracting bay leaf oil from bay leaves with subcritical n-butane fluid. The method includes smashing, adding into a tank, dipping with an n-butane solvent, extracting, distilling, and the like. Extraction temperature and pressure can be accurately controlled by utilization of a subcritical extraction device. The method is high in extraction efficiency, low in device manufacturing cost, high in raw material treating amount, simple in process, low in production cost and free of solvent residue. A whole process of the method is performed at low temperature under an oxygen-free state. Extraction and separation are performed at the same time. The extraction speed is high. Recovery and reutilization of the solvent can be achieved.

Description

technical field [0001] The invention belongs to the field of spice extraction, and specifically relates to a method for extracting geranium oil from geranium leaves with a subcritical n-butane fluid. Background technique [0002] Bay leaf (also known as laurel leaf), also known as mugwort, bay leaf, bay leaf, Tianzhugui, is an evergreen small tree of Lauraceae, native to the Mediterranean region, in Zhejiang, Jiangsu, Fujian, China It is also cultivated in Guangdong, Guangxi, Sichuan, Hunan, Anhui and other places. Its dry leaves are oval, with pointed (or blunt) tops, short petioles, wavy edges, green pages (sometimes yellow), and light colors in the north. The leaves are 25mm-100mm long and 20mm-45mm wide. The leaves are edible and are often used in cooking. They are mostly used in western food, soup, meat, vegetables, stews, etc., and have the effect of enhancing flavor and flavor. Traditional Chinese medicine believes that it also has the functions of regulating the st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B9/02
Inventor 王明奇谷信华田卫环赵旭
Owner 郑州雪麦龙食品香料有限公司
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