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Preparation method of herbal elsholtzia essential oil

A technology of incense and incense, which is applied in the directions of essential oils/spice, fat production, etc., can solve the problems of high production cost, inflammable and explosive, long production process, etc., and achieves avoiding high peroxide value, simple refining process, The effect of reducing the heating time

Active Publication Date: 2013-11-27
丽江先锋食品开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of alkali refining to deacidify causes saponification and oil loss, and a large amount of alkaline water is produced in the production process; solvent dewaxing and pigment removal, this method has a long production process, uses a large amount of solvents, and involves the recovery of various solvents. These solvents are toxic, flammable and explosive, so during use, the solvents are volatile, resulting in large losses, high production costs, and serious safety hazards.

Method used

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  • Preparation method of herbal elsholtzia essential oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Supercritical CO 2 extraction

[0034] 2.0kg is crushed to 50 mesh fenugreek seed powder and is packed in the supercritical 5L barrel, and is placed in the extraction kettle to carry out supercritical CO 2 Extraction, every 30min emits the hairy oil of yarrow from separation kettle 1 once, obtains the hairy oil of yarrow 607.3g after 4h, wherein supercritical CO 2 The extraction pressure is 20.5MPa, the extraction temperature is 45.0°C, the separation I pressure is 7.1MPa, the separation II pressure is 5.2MPa, the separation I temperature is 30.0°C, the separation II temperature is 30.0°C, CO 2 The flow rate is 44.6L / h.

[0035] 2. Dehydration and degassing by thin film distillation

[0036] Pump 607.3g of elixir crude oil into a thin-film distiller for dehydration and deodorization. The vacuum degree of thin-film distillation is 510Pa, the distillation temperature is 70.0°C, the condensation temperature is 10.0°C, the speed of scraping film is 226rpm, and the fee...

Embodiment 2

[0050] 1. Supercritical CO 2 extraction

[0051] 2.0kg is crushed to the 80 mesh fenugreek seed powder and is packed into a supercritical 5L barrel, and placed in an extraction kettle for supercritical CO 2 Extraction, every 30min emits the hairy oil of fenugreek from separation kettle 1 once, supercritical CO 2 After extraction for 3 hours, 613.1 g of fenugreek hair oil was obtained, supercritical CO 2 Extraction pressure is 30.2MPa, extraction temperature is 50.0°C, separation I pressure is 7.9MPa, separation II pressure is 5.5MPa, separation I temperature is 40.0°C, separation II temperature is 40.0°C, CO 2 The flow rate is 40.3L / h.

[0052] 2. Dehydration and degassing by thin film distillation

[0053] Pump 613.1g of elixir crude oil into a thin-film distiller for dehydration and deodorization. The vacuum degree of thin-film distillation is 2100Pa, the distillation temperature is 80.0°C, the speed of scraping film is 298rpm, the condensation temperature is 20.0°C, and...

Embodiment 3

[0067] 1. Supercritical CO 2 extraction

[0068] 2.0kg is crushed to the 100 mesh fenugreek seed powder and is packed into a supercritical 5L barrel, and placed in an extraction kettle for supercritical CO 2 Extraction, every 30min emits the hairy oil of yarrow from separation kettle 1 once, obtains the hairy oil of yarrow 596.9g after 2h, wherein supercritical CO 2 The extraction pressure is 34.8MPa, the extraction temperature is 55.0°C, the separation I pressure is 8.7MPa, the separation II pressure is 6.2MPa, the separation I temperature is 50.0°C, the separation II temperature is 50.0°C, CO 2 The flow rate is 31.8L / h.

[0069] 2. Dehydration and degassing by thin film distillation

[0070] Pump 596.9g of fenugreek crude oil into a thin-film distiller for dehydration and deodorization. The vacuum degree of thin-film distillation is 4800Pa, the distillation temperature is 90.0°C, the speed of scraping film is 348rpm, the condensation temperature is 30.0°C, and the feed fl...

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Abstract

The invention provides a preparation method of herbal elsholtzia essential oil, which is characterized by comprising the following steps: (1) extraction of supercritical CO2: smashed herbal elsholtzia seed power is added to a supercritical feed cylinder and placed in an extraction kettle for extraction of supercritical CO2, so that herbal elsholtzia crude oil can be obtained; (2) dehydration and degassing through thin-film distillation: dehydration and deodorization are performed on the herbal elsholtzia crude oil through the thin-film distillation; (3) fatty acid removal through molecular distillation: the herbal elsholtzia crude oil after dehydration and deodorization is continuously moved to a molecular still, so that deacidification herbal elsholtzia oil and a secondary product free fatty acid can be obtained; (4) activated clay decoloration: the herbal elsholtzia oil after deacidification is decolored via an activated clay decoloration column; (5) freezing and dewaxing: the freezing temperature is controlled, and the herbal elsholtzia oil stands still, or is stirred at intervals, crystallized, settled, filtered or centrifuged and dewaxed, so that faint yellow liquid namely the herbal elsholtzia essential oil can be obtained. According to the preparation method, the herbal elsholtzia essential oil has high oil production and excellent linolenic acid maintenance, the production is safe, the technology is simple, the operation is convenient, and the continuous large-scale production is facilitated.

Description

technical field [0001] The invention relates to a preparation method of fenugreek essential oil. Background technique [0002] Molsa chinensis is an annual herbaceous plant belonging to the genus Molsa of Labiatae. It is widely distributed in the south of the Yangtze River in my country and is an important medicinal plant. Argonaut essential oil is rich in α-linolenic acid, which is essential for human health but generally lacking. It also has antiviral, antibacterial, diuretic and analgesic effects, especially for influenza virus. [0003] At present, the production methods of fenugreek oil mainly include pressing, steam distillation, solvent extraction, subcritical extraction and other methods, but the oil yield of cold pressing is low, hot pressing and steam distillation are easy to cause damage to α-linolenic acid, solvent extraction and subcritical Extraction uses a large amount of flammable, explosive and toxic solvents, which may easily cause solvent residues and saf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 张泽涛王飞陈小芬金伟铮李建成和承尧
Owner 丽江先锋食品开发有限公司
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