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Preparation method of detoxified jatropha curcas oil

A jatropha oil and jatropha unhulled technology, which is applied in the direction of fat oil/fat refining, fat oil/fat production, fat production, etc., can solve the problem of not widely using daily chemical products, and not providing phorbol ester Specific data on removal rate, toxicity evaluation data, difficulty in total synthesis, etc.

Inactive Publication Date: 2018-04-03
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The potential drugs Prostratin and DPP for the treatment of AIDS are also phorbol ester derivatives, and their total synthesis is difficult. At present, they are mainly prepared from natural phorbol esters through structural modification. Due to the limitation of raw material sources, these drugs are currently extremely expensive
[0004] Jatropha curcas seeds contain high content of phorbol esters, direct consumption will cause poisoning
Whether it is pressed Jatropha curcas oil or solvent extracted Jatropha curcas oil, both contain relatively high content of phorbol esters, and at the same time, its cake still contains relatively high content of phorbol esters, which need further treatment to remove ("One Method for extracting phorbol esters from Jatropha curcas seed oil meal" CN 200810201109.6, "A detoxification method of Jatropha curcas cake" ZL 201210442405.1), subject to this limitation, currently Jatropha curcas oil is mainly used for processing and production Liquid biofuels are not widely used in daily chemical products or edible oil production
[0005] The patent "A Method for Detoxification of Jatropha Curcas Seed Oil" (CN 201310154256.3) provides a method for obtaining detoxified Jatropha curcas oil from pressed oil of Jatropha curcas seeds through ultraviolet radiation and ethanol elution, but does not provide Specific data on phorbol ester removal rate and toxicity evaluation data

Method used

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  • Preparation method of detoxified jatropha curcas oil
  • Preparation method of detoxified jatropha curcas oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Including the following steps:

[0021] 1. Use a grinder to crush 20g of dried unhulled Jatropha curcas seeds (origin in Yunnan) to 40 mesh, add methanol at 5 times the ratio of material to liquid (m / V), heat to 30°C, and ultrasonically assist (59KHz, 300w ) extraction for 25 minutes, and filtered while hot to separate the solid and liquid, and the liquid was evaporated to remove the methanol solvent to become a highly toxic phorbol ester enriched extract.

[0022] 2. After drying the solid components obtained in step 1, add n-hexane at a ratio of 5 times the material to liquid (m / V), heat until the n-hexane boils and reflux for extraction for 6 hours, stop heating and cool to 10°C, and filter to separate the solids. The liquid is detoxified Jatropha curcas oil after the liquid is evaporated to remove the n-hexane solvent, and the solid is the cake after oil extraction.

[0023] The phorbol ester content of the unhulled Jatropha curcas seeds described in step 1 is dete...

Embodiment 2

[0027] Including the following steps:

[0028] 1. Use a grinder to crush 25g of dried unhulled Jatropha curcas seeds (origin in Liangshan, Sichuan) to 40 mesh, add methanol at 7 times the material-to-liquid ratio (m / V), heat to 40°C, and stir for 60 minutes to extract , centrifuged to separate the solid and liquid, and the liquid is evaporated to remove the methanol solvent to become a highly toxic phorbol ester-enriched extract.

[0029] 2. After drying the solid components obtained in step 1, add n-hexane at a ratio of 10 times the material to liquid (m / V), heat until the n-hexane boils for Soxhlet extraction for 7.5 hours, stop heating and cool to 10°C, and then centrifuge Separation of solid and liquid, the liquid is detoxified Jatropha curcas oil after evaporating and removing the n-hexane solvent, and the solid is the cake after oil extraction.

[0030] The phorbol ester content of the unhulled Jatropha curcas seeds described in step 1 was determined to be 891.37 μg / g b...

Embodiment 3

[0034] Including the following steps:

[0035]1. Use a grinder to crush 15g of dried unhulled Jatropha curcas seeds (Panzhihua, Sichuan) to 30 mesh, add methanol at a ratio of 6 times the material to liquid (m / V), heat to 35°C, and ultrasonically assist (59KHz, 300w) extract for 40 minutes, centrifuge while hot to separate the solid and liquid, the liquid is evaporated to remove the methanol solvent, and the highly toxic phorbol ester enriched extract is obtained.

[0036] 2. After drying the solid components obtained in step 1, add n-hexane according to 8 times the material-to-liquid ratio (m / V), heat until n-hexane boils and reflux for extraction for 8 hours, stop heating and cool to 10°C, then filter and separate Solid-liquid, the liquid is detoxified Jatropha curcas oil after evaporation and removal of n-hexane solvent, and the solid is cake after oil extraction.

[0037] The phorbol ester content of the unhulled Jatropha curcas seeds described in step 1 is determined to ...

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Abstract

The invention relates to a method for obtaining detoxified jatropha curcas oil from seeds of jatropha curcas which is an energy plant, and belongs to the fields of comprehensive utilization of energyplants and production of vegetable oil. According to the method, detoxified jatropha curcas oil is extracted from seeds of jatropha curcas via a simple two-step method by adoption of two solvents, andcake with low toxicity and a phorbol-ester-enriched extract with high toxicity are obtained at the same time. The method is simple to operate, high in product yield, low in cost, and suitable for massive production. The method has a high value with respect to deep processing and added value increase of jatropha curcas resource.

Description

technical field [0001] The present invention relates to energy plant jatropha seeds ( Jatropha carcas The method for obtaining detoxified jatropha oil in L.) belongs to the field of energy plant comprehensive utilization and vegetable oil production. Background technique [0002] Jatropha carcas L. is an important non-food energy plant with high yield and high oil content widely planted in the world. In my country, it is mainly distributed in poor mountainous areas such as Liangshan in Sichuan, Yunnan, Guizhou, Guangxi, Guangdong, and Hainan Island. It is planted in barren mountains and wasteland. Jatropha curcas not only contributes to ecological protection, but also can obtain sustainable forest product income. [0003] Phorbol ester is a kind of monoester or diester compound formed by diterpene compound phorbol and different fatty acids or organic acids, mainly distributed in Euphorbiaceae and Daphneaceae plants. Phorbol esters exhibit various toxicity and cancer-promot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/10C11B3/00C11B3/12
CPCC11B1/04C11B1/10C11B1/106C11B3/001C11B3/008C11B3/12
Inventor 彭彤陈放何韵云郭亦然唐琳吴军徐莺白洁
Owner SICHUAN UNIV
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