Method for gathering oleic acid from tea-seed oil

A technology of oleic acid and tea seed oil, which is applied in the direction of fat oil/fat separation and fat production, can solve the problems of complex process and damage, and achieve the effect of simple equipment, good application prospects and cheap reagents

Inactive Publication Date: 2010-09-29
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above literatures relate to the enrichment of oleic acid in camellia oil by urea inclusion method, the process is relatively complicated. Most of them are to remove sa...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Accurately weigh 23.16g of potassium hydroxide and dissolve it in 400ml of ethanol solution, slowly add 100g of tea seed oil (saponification value is 193mgKOH / g), heat and stir at 80°C for 1.5h, transfer the saponification solution to a rotary evaporator to recover ethanol, and Pour the heat into an appropriate amount of water to obtain a saponified liquid. Take the aqueous layer and add water to dilute, add 6mol / l hydrochloric acid dropwise under stirring condition to acidify to pH 2-3, transfer to a separatory funnel, extract and separate layers with n-hexane, take the organic phase and use 40°C hot distilled water and 5% sodium chloride respectively The aqueous solution was washed to neutrality, passed through a funnel equipped with anhydrous sodium sulfate, and the filtrate recovered n-hexane to obtain 75.5 g of tea seed oil mixed fatty acids, with a recovery rate of 75.5%

[0019] Accurately weigh 30g of urea and dissolve it in 120ml of ethanol solution, stir at 50...

Embodiment 2

[0021] Accurately weigh 23.16g of potassium hydroxide and dissolve it in 400ml of ethanol solution, slowly add 100g of tea seed oil (saponification value is 193mgKOH / g), heat and stir at 90°C for 2h, transfer the saponification solution to a rotary evaporator to recover ethanol, and Pour in an appropriate amount of water to obtain a saponified solution. Take the aqueous layer and add water to dilute, add 6mol / l hydrochloric acid dropwise under stirring condition to acidify to pH 2-3, transfer to a separatory funnel, extract and separate layers with n-hexane, take the organic phase and use 40°C hot distilled water and 5% sodium chloride respectively Wash the aqueous solution to neutrality, pass through a funnel equipped with anhydrous sodium sulfate, recover n-hexane from the filtrate, and obtain 84.2g of tea seed oil mixed fatty acids, with a recovery rate of 84.2%

[0022] Accurately weigh 20g of urea and dissolve it in 80ml of ethanol solution, stir at 50°C until clear, add ...

Embodiment 3

[0024] Accurately weigh 38.6g of potassium hydroxide and dissolve it in 400ml of ethanol solution, slowly add 200g of tea seed oil (saponification value is 193mgKOH / g), heat and stir at 80°C for 1.5h, transfer the saponification solution to a rotary evaporator to recover ethanol, and Pour the heat into an appropriate amount of water to obtain a saponified liquid. Take the aqueous layer and add water to dilute, add 6mol / l hydrochloric acid dropwise under stirring condition to acidify to pH 2-3, transfer to a separatory funnel, extract and separate layers with n-hexane, take the organic phase and use 40°C hot distilled water and 5% sodium chloride respectively The aqueous solution was washed to neutrality, passed through a funnel equipped with anhydrous sodium sulfate, and the filtrate recovered n-hexane to obtain 109.0 g of tea seed oil mixed fatty acids, with a recovery rate of 54.5%

[0025] Accurately weigh 77.5g of urea and dissolve it in 310ml of ethanol solution, stir at ...

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PUM

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Abstract

The invention relates to a method for gathering high-purity oleic acid from tea-seed oil, which comprises the following steps: preparation of tea-seed oil mixed fatty acid and separation of saturated fatty acid, and is characterized by also comprising the following steps that: tea-seed oil is saponified and acidified to prepare tea-seed oil mixed fatty acid; urea and mixed fatty acid are sequentially added into short-chain alcoholic phase, are frozen to form urea inclusion compound and then are filtered or centrifugally separated to obtain liquid-phase non-urea inclusion part, and unsaturated fatty acid product is obtained after the solvent is steamed. With the method, total content of 18-carbon unsaturated fatty acid reaches 95 to 99.3 percent, the content of the oil acid reaches 90 to 93.3 percent, and the obtained oil acid can be directly used in the fields such as cosmetics, medical and the like. The method has low cost, simple process and environmental protection and is convenient for the mass production.

Description

technical field [0001] The invention belongs to the technical field of functional oil extraction and separation, and in particular relates to a method for enriching oleic acid from tea seed oil. Background technique [0002] Camellia oil is from Camellia oleifera ( Camellia leifera Abel ) seeds, also known as tea seed oil, camellia oil, is a unique woody oil in my country, mainly distributed in Hunan, Jiangxi, Guangxi, Guangdong and other southern provinces. The fatty acid composition of tea oil is very similar to olive oil, the best woody edible vegetable oil recognized in the world, so tea oil is also known as "Oriental olive oil". Unsaturated fatty acids in camellia oil are as high as 90%, of which oleic acid is 75%-83%, linoleic acid is 7.4%-13%, and unsaponifiable matter is less than 1%. Its oleic acid is the highest among all vegetable oils and is rich in oleic acid. of excellent raw materials. [0003] Oleic acid ( oleic acid ), also known as octadecenoic acid, i...

Claims

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Application Information

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IPC IPC(8): C11B7/00
Inventor 李湘洲胡伟吴志平
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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