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High purity punicic acid production method

A punicic acid, high-purity technology, applied in the production of bulk chemicals, separation/purification of carboxylic acid compounds, organic chemistry, etc., can solve problems that have not been reported, and achieve the effect of simple process, high purity and high yield

Inactive Publication Date: 2006-04-26
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no report about the production process of extracting punicic acid from pomegranate seeds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 〔1〕Put 1000g of pomegranate seeds into the extractor for supercritical CO 2 Extraction, extraction pressure 25MPa, extraction temperature 45°C, separation pressure 9MPa, separation temperature 60°C, to obtain 140g pomegranate seed oil;

[0016] [2] mix pomegranate oil with 5% sodium hydroxide solution, and reflux for 1.6 hours to obtain fatty acid salt mixture;

[0017] (3) Acidifying the fatty acid salt mixture with hydrochloric acid to a pH value of 3.5 to obtain mixed fatty acids;

[0018] [4] washing the mixed fatty acids obtained in [3] until neutral;

[0019] [5] Stir and reflux urea and methanol according to the ratio of urea:methanol at 1:3 until the urea is completely dissolved, then slowly pour the mixed fatty acid obtained in step (4), and stand at -10°C for 12 hours; Suction filtration, remove urea from the filter cake to obtain saturated fatty acid; remove methanol from the filtrate to obtain punicic acid with a content of 92%.

Embodiment 2

[0021] 〔1〕Put 1000g of pomegranate seeds into the extractor for supercritical CO 2 Extraction, extraction pressure 25MPa, extraction temperature 45°C, separation pressure 9MPa, separation temperature 60°C, to obtain 136g pomegranate seed oil;

[0022] (2) mix pomegranate oil with 8% potassium hydroxide solution, and reflux for 2 hours to obtain fatty acid salt mixture;

[0023] (3) Acidifying the fatty acid salt mixture with hydrochloric acid to a pH value of 4.0 to obtain mixed fatty acids;

[0024] [4] Washing the mixed fatty acid obtained in [3] to neutrality;

[0025] [5] Stir and reflux urea and methanol according to the ratio of urea:methanol at 1:3.5 until the urea is completely dissolved, then slowly pour the mixed fatty acid obtained in step (4), and stand at -12°C for 14 hours; Suction filtration, remove urea from the filter cake to obtain saturated fatty acid; remove methanol from the filtrate to obtain punicic acid with a content of 93%.

Embodiment 3

[0027] 〔1〕Put 1000g of pomegranate seeds into the extractor for supercritical CO 2 Extraction, extraction pressure 25MPa, extraction temperature 45°C, separation pressure 9MPa, separation temperature 60°C, to obtain 142g pomegranate seed oil;

[0028] [2] mix pomegranate oil with 7% sodium hydroxide solution, and reflux for 3 hours to obtain fatty acid salt mixture;

[0029] (3) acidifying the fatty acid salt mixture to a pH value of 3 with hydrochloric acid to obtain mixed fatty acids;

[0030] [4] washing the mixed fatty acids obtained in [3] until neutral;

[0031] [5] Stir and reflux urea and methanol according to the ratio of urea:methanol at 1:5 until the urea is completely dissolved, then slowly pour the mixed fatty acid obtained in step (4), and stand at -18°C for 16 hours; Suction filtration, remove urea from the filter cake to obtain saturated fatty acid; remove methanol from the filtrate to obtain punicic acid with a content of 90%.

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PUM

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Abstract

The high-purity punicic acid producing process includes supercritical CO2 extraction of pomegranate seed as material at pressure 12-40 MPa and temperature 31.1-60 deg.c; separation at pressure 5-12 MPa and temperature 20-80deg.c to obtain pomegranate seed oil; hydrolyzing pomegranate seed oil to obtain mixed fatty acid; and separating the mixed fatty acid through uric acid inclusion process to obtain high-purity punicic acid. The present invention has the advantages of simple technological process, high purity of punicic acid and high yield.

Description

technical field [0001] The invention belongs to a method for producing high-purity punicic acid. technical background [0002] Pomegranate is a plant of the genus Pomegranate in the family Pomegranate, which is a deciduous shrub or small tree fruit tree. Pomegranate is a fruit with high nutritional value. Its peel is a traditional Chinese medicine, which has the functions of astringent intestines, hemostasis, and insect repellent. The latest research shows that pomegranate is rich in vitamin B1, B2 and vitamin C, as well as niacin, potassium and phytoestrogens, which are very beneficial to human health. [0003] Foreign studies in recent years have shown that pomegranate seed oil and its extracts have good antioxidant, breast cancer prevention, hypoglycemic, and antidiarrheal effects. The analysis of pomegranate seed oil shows that there are six main fatty acids in pomegranate seed oil: punicic acid, linolenic acid, linoleic acid, oleic acid, palmitic acid, stearic acid an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C57/12C07C51/48
CPCY02P20/54
Inventor 齐永琴
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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