Extraction method of Chinese torreya shell essential oil

An extraction method and a technology for Torreya torreya are applied in the field of extracting essential oil of Torreya husks, which can solve the problems of large consumption of organic solvents, high oil yield, easy residues and the like, and achieve the effects of solving waste utilization, promoting overall upgrading and low cost.

Inactive Publication Date: 2009-10-07
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressing method is suitable for the extraction of essential oils rich in heat-sensitive substances such as terpenoids and aldehydes. Its advantage is that it can protect heat-sensitive components at room temperature. The disadvantage is that the purity of essential oils in the product is not high and there are many impurities.
The essential oil products obtained by extraction and distillation can better retain the original aroma of raw materials, and can extract components that cannot be extracted by distillation and pressing methods. The disadvantage is that the consumption of organic solvents is relatively large, and most organic solvents are easy to remain in the product
Supercritical CO 2 The advantage of fluid extra

Method used

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  • Extraction method of Chinese torreya shell essential oil
  • Extraction method of Chinese torreya shell essential oil
  • Extraction method of Chinese torreya shell essential oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] equipment:

[0026] German KOMET DD85G cold press;

[0027] LXJ-II centrifugal sedimentation machine

[0028] instrument:

[0029] Agilent 7890-5975 GC-MS column model: HP-Innowax 60m×0.25mm×0.25μm

[0030] French Alpha M.O.Sα-FOX4000 electronic nose

[0031] Gas chromatography conditions:

[0032] The initial temperature was maintained at 50°C for 5 minutes, raised to 220°C at 3°C / min, and maintained for 5 minutes. Injection port temperature: 250°C; split ratio 50:1; injection volume 1 μl Chromatographic library: wiley7n and nist05 library.

[0033] Extract essential oil from fresh Torreya husk

[0034] Take 3 kg of fresh Chinese torreya shells, after simple shearing, soak in 5% sodium sulfate solution for 8 hours, drain the water, use a cold press to squeeze the juice from the soaked Chinese torreya shells, and obtain about 6.5 liters of mixed solids liquid, the mixed solution is centrifuged with a centrifugal sedimentation machine, and after separation and pre...

Embodiment 2

[0040] equipment:

[0041] FX type traditional Chinese medicine grinder

[0042] instrument:

[0043] Agilent 7890-5975 GC-MS column model: HP-Innowax 60m×0.25mm×0.25μm

[0044] French Alpha M.O.Sα-FOX4000 electronic nose

[0045] Gas chromatography conditions:

[0046] The initial temperature was maintained at 50°C for 5 minutes, raised to 220°C at 3°C / min, and maintained for 5 minutes. Injection port temperature: 250°C; split ratio 50:1; injection volume 1 μl Chromatographic library: wiley7n and nist05 library.

[0047] Extract essential oil from stale torreya husk

[0048] Take stale torreya shells, put them in a ZK-82A vacuum drying oven at 60°C and dry them after simple grading, until the water content of the torreya shells reaches 5%, and use the FX type traditional Chinese medicine grinder to crush the dried torreya shells to make the torreya shell powder When the number reaches about 80-100 mesh, 3 kg of the obtained powder is distilled by water distillation. Befor...

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Abstract

The invention relates to an extraction method of essential oil and selects two technological extraction ways depending on the difference of freshness of the Chinese torreya shell raw material. As regard to fresh Chinese torreya shells, namely the Chinese torreya shells stored for no more than 1 day under normal temperature and pressure, and a method of first cold pressing and then steam distillation can be adopted; as regard to stale Chinese torreya shells, namely the Chinese torreya shells stored for more than 1 day under normal temperature and pressure and serious browning occurs, a method of first drying, then grinding and finally steam distillation can be adopted. The oil yields of the Chinese torreya shell essential oils obtained by the two extraction methods are respectively 0.3-0.5 percent (v/w, wet basic weight) and 1-1.25 percent (v/w, dry basic weight). By GC-MS analysis and electronic nose comparison, the flavour and constituents of the two essential oils are quite similar. By adopting different extraction processes according to the difference of freshness of the raw materials, the invention finally utilizes the steam distillation technology to extract the Chinese torreya shell essential oil and the method is characterized by safety, convenience, high efficiency, low cost, etc.

Description

technical field [0001] The invention relates to a method for extracting essential oil of Chinese torreya shell. Especially for the freshness of Torreya husks, two different extraction processes are used, but finally steam distillation is used to extract the essential oil of Torreya husks. Background technique [0002] Torreya grandis cv merrilli, also known as Torreya grandis cv merrilli, is one of the precious dried fruits. It is an evergreen tree of the yew family Torreya genus, native to China. Its fruit is one of the best quality in the Torreya genus, and it is one of the rare and precious dried fruits in the world. It is rarely cultivated in other countries, and it has been cultivated in my country for more than 1300 years. Torreya torreya is a rare fruit tree in the world. It is a unique economic tree species in my country. It has high edible and medicinal value. It is a relict plant of the Tertiary Period. 10 provinces and cities including Jiangxi, Jiangxi and Hunan...

Claims

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Application Information

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IPC IPC(8): C11B9/02
Inventor 冯涛庄海宁崔俭杰宣方李冲冲
Owner SHANGHAI INST OF TECH
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