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Preparing method of cedar essential oil

A technology for Chinese fir oil and Chinese fir, which is applied in the field of chemical extraction of wood essential oil, can solve problems such as unfavorable direct use of fir essential oil, deep color of essential oil, solvent residue, etc., and achieve the effects of saving extraction cost, pure aroma and low extraction temperature.

Active Publication Date: 2017-10-24
黄山市巨龙生物能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oil yield of fir essential oil extracted by solvent extraction is higher than that of steam distillation, but it consumes a lot of solvent, the follow-up treatment is complicated, and there are problems such as high energy consumption and solvent residue.
The oil yield of Chinese fir essential oil extracted by dry distillation method is relatively high, but the essential oil obtained by this method is darker in color, contains a large amount of tar, phenol, aldehyde and ketone, etc., and has obvious smokey smell, which is not conducive to the protection of Chinese fir essential oil. Direct use and deep processing to prepare high value-added spices

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Extract and prepare fir essential oil according to the following steps:

[0024] 1) Distillation-dry distillation extraction: crush 800g Chinese fir raw material into 2-5cm 3 Small pieces of Chinese fir raw materials were soaked in 6.5% by mass saline solution for ultrasonic treatment for 165s, and the ultrasonic power was 350W. Then, the mixture of the sonicated Chinese fir raw material and brine was transferred to -18°C for frozen storage, and then put into the reaction kettle after the water was frozen into ice crystals. Then add 4g of 0.1% Triton X-100, heat up to boiling water at a heating rate of 5°C / min, continue to heat up to 200°C at a heating rate of 5°C / min after the water evaporates, keep the final temperature for 45min, and collect condensation product. The remaining substrate in the reaction kettle can continue to heat up to obtain charcoal products, or better: mix the remaining substrate in the reaction kettle with 3 times the volume of distilled water,...

Embodiment 2

[0029] Extract and prepare fir essential oil according to the following steps:

[0030] 1) Distillation-dry distillation extraction: crush 1000g Chinese fir raw material into 2-5cm 3 The small piece of fir raw material is soaked in 6.5% by mass percentage of brine for ultrasonic treatment for 150s, and the ultrasonic power is 350W. Then the mixture of the sonicated Chinese fir raw material and brine was transferred to -15°C for frozen storage, and then put into the reaction kettle after the water was frozen into ice crystals. Then add 3.75g of 0.1% Triton X-100, heat up to boiling water at a heating rate of 5°C / min, continue to heat up to 200°C at a heating rate of 5°C / min after the water is evaporated, and keep the final temperature for 40min. Collect condensed product. Fully mix the condensed product with an equal volume of distilled water, so that the doped water and water-soluble impurities in the condensed product return to the water phase, let stand to separate, and co...

Embodiment 3

[0035] Extract and prepare fir essential oil according to the following steps:

[0036] 1) Distillation-dry distillation extraction: crush 500g of Chinese fir raw material into 2-5cm 3Small pieces of Chinese fir raw material were soaked in 6.5% by mass saline solution for ultrasonic treatment for 210s, and the ultrasonic power was 350W. Then the mixture of the sonicated Chinese fir raw material and brine was transferred to -20°C for frozen storage, and then put into the reaction kettle after the water was frozen into ice crystals. Then add 3g of 0.1% Triton X-100, heat up to boiling water at a heating rate of 5°C / min, and continue to heat up to 200°C at a heating rate of 5°C / min after the water evaporates to dryness, keep the final temperature for 50min, collect condensation product. The remaining substrate in the reaction kettle was mixed with 2 times the volume of distilled water, and the temperature of the mixture was adjusted to 70 ° C, stirred for 6 min, and then the oi...

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Abstract

The invention relates to the technical field of chemical extraction of wood essential oil, and aims at providing the preparing method of cedar essential oil which is high in yield and good in quality. According to the technical scheme, the preparing method of the cedar essential oil comprises the steps of distillation-destructive distillation extraction, and treatment of destructive distillation cedar oil and rectification, in the step of extraction, patches of cedar raw materials and saline water are thrown into a destructive distillation reaction still, temperature rising is conducted with the heating speed being 5 DEG C / min, a condensed product is collected and subjected to standing and layering, and the destructive distillation cedar oil at the upper layer is separated out; then the destructive distillation cedar oil is neutralized and washed, and hexyl alcohol is added after the oil layer is separated out; after the destructive distillation cedar oil and hexyl alcohol are uniformly mixed, peroxide is dropwise added to conduct a reaction. The reaction product is distilled multiple times to collect and obtain the cedar essential oil. The preparing method of the cedar essential oil is easy to operate, and low in cost; the obtained technological product is high in yield of oil, and the cedar essential oil which the quality meets a fragrance blending requirement and the products of cedarwood alcohol and cedrene monomeric spice can be obtained.

Description

technical field [0001] The invention belongs to the technical field of chemical extraction of wood essential oil, and in particular relates to a preparation method of Chinese fir essential oil. Background technique [0002] Chinese fir, a gymnosperm plant, belongs to the family Cedaraceae and the genus Cedar. It has a tall tree body, straight texture, fine structure, light and soft material, easy processing, corrosion resistance and insect resistance, and strong wear resistance. It is the most important tree species for afforestation in southern my country. Extensive and rich in resources. Chinese fir is rich in essential oils, and its main components are cedrene and cederyl alcohol. Their composition and aroma characteristics are similar to those of cedarwood oil. They can replace high-cost cedarwood oil and be used in the fragrance industry. [0003] At present, the extraction and processing of fir essential oil mainly use steam distillation, solvent extraction and dry dis...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/14C11B3/06C11B3/08C11B3/12
CPCC11B1/04C11B1/14C11B3/001C11B3/06C11B3/08C11B3/12
Inventor 沈长波吴廷雪
Owner 黄山市巨龙生物能源科技有限公司
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