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Method for extracting rosemary essential oil and antioxidant from rosemary

A technology for rosemary essential oil and antioxidants, which is applied in the directions of essential oils/spice, chemical instruments and methods, separation methods, etc., can solve the problems of complicated operation, low yield of essential oil, low yield and content of antioxidants, etc. The distillation temperature is low, the yield of essential oils is improved, and the effect of protection from damage

Active Publication Date: 2018-02-13
SOUTHWEST FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Extract the essential oil from the dry leaves of rosemary after drying in the shade by steam distillation, but this method is cumbersome to operate, the yield of essential oil is relatively low, and the yield and content of antioxidants are also relatively low

Method used

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  • Method for extracting rosemary essential oil and antioxidant from rosemary

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Take 150 kg of rosemary branches and leaves picked for 48 hours, wash the soil on the surface, add 150 kg of deionized water to soak for 3 hours at room temperature, and then use a refiner at a speed of 12000 r / min to beat for 4 minutes to obtain rosemary slurry. Adjust the pH value of the obtained rosemary slurry to 4.5 with acetic acid, add 0.15 kg of cellulase with an enzyme activity of 350,000 U / g, and perform enzymatic hydrolysis at 30° C. for 5 hours to obtain an enzymatic hydrolysis solution.

[0060] The obtained enzymatic hydrolysis solution is fed into the spinning cone distillation tower at a rate of 100L / h from the feed port of the spinning cone distillation tower, and water at a temperature of 95°C is passed into the bottom of the spinning cone distillation tower at a flow rate of 80Kg / h Steam, keeping the rotational speed of the rotating cone at 150r / min, condensing the steam at the top of the rotating cone distillation tower to obtain a rosemary oil-water ...

Embodiment 2

[0062] Take 150 kg of rosemary branches and leaves that have been picked for 15 hours, wash the surface soil, add 450 kg of deionized water to soak for 1 hour at room temperature, and then use a refiner at a speed of 15000 r / min to beat for 6 minutes to obtain rosemary slurry. Adjust the pH value of the obtained rosemary slurry to 7 with acetic acid, add 0.75 kg of amylase with an enzyme activity of 800,000 U / g, and perform enzymolysis at 65° C. for 3 hours to obtain an enzymolysis solution.

[0063] The obtained enzymatic hydrolysis solution is fed into the rotating cone distillation tower at a rate of 300L / h from the feed port of the rotating cone distillation tower, and water at a temperature of 110°C is passed into the bottom of the rotating cone distillation tower at a flow rate of 10Kg / h Steam, keeping the rotational speed of the rotating cone at 600r / min, condensing the steam at the top of the rotating cone distillation tower to obtain a rosemary oil-water mixture, and s...

Embodiment 3

[0065] Take 150 kg of rosemary branches and leaves that have been picked for 36 hours, wash the surface soil, add 200 kg of deionized water, soak for 2 hours at room temperature, and then use a refiner at a speed of 13000 r / min to beat for 5.5 minutes to obtain rosemary slurry. Adjust the pH of the obtained rosemary slurry to 6 with acetic acid, add 0.40 kg of papain with an enzyme activity of 1 million U / g, and perform enzymatic hydrolysis at 50° C. for 4 hours to obtain an enzymatic hydrolysis solution.

[0066] The obtained enzymatic hydrolysis solution is fed into the spinning cone distillation tower at a rate of 250L / h from the feed port of the spinning cone distillation tower, and water at a temperature of 105°C is passed from the bottom of the spinning cone distillation tower at a flow rate of 60Kg / h Steam, keeping the rotational speed of the rotating cone at 300r / min, condensing the steam at the top of the rotating cone distillation tower to obtain a rosemary oil-water ...

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Abstract

The invention provides a method for extracting a rosemary essential oil and an antioxidant from rosemary, and belongs to the technical field of plant extraction. The rosemary essential oil is extracted under the conditions that fresh rosemary branches and leaves are used as the raw materials and are processed through a rotating cone distillation column, the revolving speed of a rotating cone is 150-600 r / min, the feed rate of a wall-broken rosemary pulp is 100-300 L / h, the temperature of water vapor is 95-110 DEG C, and the flow velocity of the water vapor is 10-80 kg / h. Compared with the traditional water vapor distillation extraction, the extraction method provided by the invention can continuously produce, the distillation time of the material is short, the running temperature is low, the degradation of the processing material is effectively avoided, and the yields of the essential oil and the antioxidant are high.

Description

technical field [0001] The invention belongs to the technical field of plant extraction, and in particular relates to a method for extracting rosemary essential oil and antioxidants from rosemary. Background technique [0002] Rosemary, the Latin scientific name (Rosmarinus officinalis) Lamiaceae shrub, can extract antioxidants and rosemary essential oil with excellent antioxidant properties from rosemary flowers and leaves. Rosemary antioxidants are widely used in medicine, fried food, oil-rich food and various oils to preserve freshness and quality; while rosemary essential oil is used in spices, air fresheners, termite repellents, and daily products such as sterilization and insecticide. chemical industry. [0003] At present, the most commonly used method for extracting rosemary essential oil in the industry is to first obtain rosemary essential oil from dried rosemary leaves dried in the shade by steam distillation, and then use an organic solvent to extract rosemary a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02B01D11/02
CPCB01D11/0265B01D11/0269B01D11/0284B01D2011/007C11B9/027
Inventor 刘祥义刘建祥叶志恒胡翔飞徐娟刘守庆雷然李云仙
Owner SOUTHWEST FORESTRY UNIVERSITY
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