Method for extracting cedar wood alcohol from Chinese fir root-bark

An extraction method, the technology of cedarwood alcohol, which is applied in the field of extraction of cedarwood alcohol, can solve the problems that production enterprises cannot bear and the price is high, and achieve the effect of saving raw material costs and expanding the source of raw materials

Inactive Publication Date: 2013-04-10
南昌洋浦天然香料香精有限公司
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AI Technical Summary

Problems solved by technology

With the reduction of forests, cedarwood oil resources are gradually exhausted, and the price is getting higher and higher, which makes the production enterprises unaffordable. Therefore, there is an urgent need for a method for producing cedarwood alcohol that can replace cypress as raw material

Method used

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specific Embodiment approach 1

[0009] Specific embodiment one: this specific embodiment adopts the following technical scheme: its extraction method is: 1, planing or pulverizing Chinese fir root, carry out steam distillation, obtain almost colorless Chinese fir root essential oil; 2, Chinese fir root essential oil Place in the freezer for 8 hours at -15°C to allow the cedarwood alcohol to crystallize; 3. Take out the crystals, place them in a centrifuge, shake off other uncrystallized oils, and wash with ethanol Once, ethanol is volatilized in a low-temperature drying room to obtain cedarwood alcohol with a purity of 93% to 96%.

[0010] The oil yield of Chinese fir root essential oil in the extraction method 1 is 1.9-2.3%, the density of the oil is 0.8580-0.8710, the refractive index (20°C) is 1.4745, the optical rotation is +0.5°, and it contains cedaryl alcohol 39.48 %, α-pinene 3.674%, limonene 1.743%, p-cymene 0.165%, α-terpineol 0.470%, phoenixene 0.487%, α-alcorene 1.692% and β-elemene 1.691%.

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specific Embodiment approach 2

[0012] Specific embodiment two: the extraction method of this specific embodiment is: 1, planing or pulverizing Chinese fir root, carry out steam distillation, obtain almost colorless Chinese fir root essential oil; 2, place Chinese fir root essential oil in the freezer, Place it at -20°C for 6 hours to allow the cedarwood alcohol to crystallize; 3. Take out the crystals, place them in a centrifuge, shake off other uncrystallized oils, wash them once with ethanol, and place them in a low-temperature drying room. Ethanol is volatilized in the medium, and cedarwood alcohol with a purity of 93% to 96% can be obtained.

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Abstract

The invention discloses a method for extracting cedar wood alcohol from Chinese fir root-bark, which relates to a cedar wood alcohol extraction method for smashing and distilling Chinese fir root-bark, extracting Chinese fir root-bark essential oil, refrigerating Chinese fir root-bark essential oil, and separating cedar wood alcohol. The extraction method comprises the following steps of: 1, flaking or smashing Chinese fir root-bark, and distilling water vapor to obtain almost colorless Chinese fir root-bark essential oil; 2, putting the Chinese fir root-bark essential oil into a refrigeration chamber, and standing at the temperature of 10 DEG C below zero to 20 DEG C below zero for 6-8 hours to crystalize cedar wood alcohol in the Chinese fir root-bark essential oil; and 3, taking crystals out, putting into a centrifuge, throwing other non-crystalized oils, washing with ethanol once, and evaporating ethanol in a low-temperature drying room to obtain cedar wood alcohol of which the purity is 93-96 percent. The method for extracting cedar wood alcohol from Chinese fir root-bark instead of expensive cypress trees is adopted, so that the raw material source is expanded, and the raw material cost is saved.

Description

technical field [0001] The invention relates to a method for extracting cedaryl alcohol from Chinese fir roots, in particular to a method for extracting cedaryl alcohol from crushing and distillation of Chinese fir roots, preparation of Chinese fir root essential oil, freezing of Chinese fir root essential oil, and separation of cedaryl alcohol. Background technique [0002] The roots, stems and branches of cypress contain volatile oil, and its fragments can be steam distilled to obtain cypress crude oil. Cedarwood essential oil can be obtained by distilling cedarwood crude oil under reduced pressure, and its main components are cedrene and cedrene alcohol. Cedarwood series spices can be synthesized from cedrene and cedrinol. These spices have woody, sweet, and long-lasting fragrances, are deeply loved by people, and are widely used in medicine, spices, soaps, and insecticides. [0003] Cedryl alcohol is mainly used in the synthesis of methyl cedryl ether. At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C35/37C07C29/76
Inventor 梅家庆
Owner 南昌洋浦天然香料香精有限公司
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