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An extraction method and a technology of linalool, which are applied in the field of linalool extraction, can solve the problems of harsh preparation conditions, high production cost, and difficult operation of linalool, and achieve low cost, sufficient amount of raw materials, and short process flow Effect
Inactive Publication Date: 2017-09-22
GUANGXI WANSHAN SPICE
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Abstract
Description
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Problems solved by technology
[0007] There are disadvantages such as harsh preparation conditions, difficult operation, high production cost and serious environmental pollution in the preparation of linalool by these methods.
Method used
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Examples
Experimental program
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Effect test
Embodiment 1
[0029] 1) Put the star anise fruit and leaves into the steam oil pan, the steam pressure is 0.01-0.03MPa, the kettle temperature is 30-100°C, the oil-water mixture is collected, and the oil-water is separated to obtain fennel oil;
[0030] 2) Frozen centrifugation: Put the fennel oil into the cold storage, adjust the temperature of the cold storage to -3-5°C, freeze for 12-16 hours, crush and centrifuge, then heat and melt;
[0031] 3) Put the molten liquid obtained in step 2) into a rectifying tower, control the temperature of the kettle at 50-125°C under a low pressure of ≤100Pa, collect the front fraction equivalent to 13-15% weight ratio of the molten liquid at 10-50kg / h, and obtain 30% Artemisinin, control the temperature of the kettle at 120°C-130°C, collect the intermediate product equivalent to 5-7% weight ratio of the melt at 5-15kg / h, and obtain 60-70% anethole, press 140- 150kg / h continues to collect anethole equivalent to 70-74% weight ratio of the melt, and the te...
Embodiment 2
[0036] Step 1)-5) with embodiment 1;
[0037] 6) Put 2T head oil (84% linalool) into the 3T high-efficiency separation and rectification tower, raise the temperature to 60-80°C at ≤100Pa, collect 500kg of fractions at 45-60°C, adjust the temperature to 90-110°C, and the reflux ratio 5:2 Collect 1200kg of fractions at 65-88°C, adjust the temperature to 110-125°C to fully open and collect 250kg of tail oil, the total material yield is 97.5%, and the qualified linalool (content ≥ 98%) has a yield of 70.0%.
Embodiment 3
[0039] Step 1)-5) with embodiment 1;
[0040] 6) Put 2T head oil (84% linalool) into the 3T high-efficiency separation and rectification tower, raise the temperature to 50-60°C at ≤100Pa, collect 200kg of fractions at 45-48°C, adjust the temperature to 70-110°C, and the reflux ratio 5:3 Collect 1500kg of fractions at 65-84°C, adjust the temperature to 110-125°C to fully open and collect 290kg of tail oil, the total material yield is 99.5%, and the qualified linalool (content ≥ 98%) has a yield of 87.5%.
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Abstract
The invention discloses an extraction method of linalool. The extraction method comprises the following steps: (1) extracting fennel oil from fruits and leaves of aniseed; (2) rectifying to separate a front cut fraction (30 percent of estragole) generated in the process of preparing anethole from the fennel oil, and obtaining 80 percent of estragole and about 12 percent of terpilenol azeotrope; and (3) placing the azeotrope obtained in the step (2) into a high-performance rectifying tower, intermittently feeding the materials, efficiently rectifying separating, adjusting a reflux ratio and a vacuum degree at three kettle temperature stages of 80 DEG C, 95 DEG C and 110 DEG C, placing the obtained head oil into a high-performance separation tower, controlling the kettle temperature at 50 to 60 DEG C at the low pressure less than or equal to 100Pa, collecting a fraction of 45 to 48 DEG C, adjusting the temperature to 70 to 110 DEG C, collecting the fraction of 65 to 84 DEG C, adjusting the temperature to 110 to 125 DEG C, and collecting tail oil. The front cut fraction generated in the anethole extraction process is used as the raw material, so that the price is low; and the processing is carried out on the basis of the existing equipment, so that the operation is simple, the equipment depreciation is reduced, and the enterprise benefit is increased. No additive is adopted, so that the extraction method of the linalool is natural and environment-friendly.
Description
technical field [0001] The invention belongs to the technical field of spices and fine chemicals, and in particular relates to a method for extracting linalool. Background technique [0002] Linalool, chemical name: 3,7-dimethyl-1,6-octadien-3-ol, also known as linalool and linalool. A colorless liquid with a lily-of-the-valley aroma, but the aroma varies with the source. There are linoleum leaf oil, linoleum oil, jalo wood oil, rosewood oil, coriander seed oil, brandy leaf oil, lavender oil, daidai leaf oil, bergamot oil, sage perilla oil and many other oils with high content. Flower (jasmine, rose, tortoise, orange blossom, ylang ylang, etc.) oil. It is mainly used in spices, deodorants, anti-caries agents, insecticides and other fields. [0003] At present, the preparation methods of linalool at home and abroad mainly use essential oils such as aromatic oil, linale oil, rosewood oil, and karo wood oil as raw materials, which are obtained by fractional distillation, and...
Claims
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Application Information
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