Method for gathering and purifying polyunsaturated fatty acid from mixed fatty acid of trichosanthes seed oil

A technology of unsaturated fatty acids and mixed fatty acids, applied in the field of purifying polyunsaturated fatty acids, can solve the problems of PUFA enrichment and purification of melon seed oil, limited in-depth research on melon seed oil, etc., to promote deep processing and comprehensive utilization, The effect of easy control and simple operation process

Inactive Publication Date: 2013-10-02
ANHUI AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0006] At present, the researches on Trichosanthes seeds at home and abroad are mainly focused on the optimization of oil extraction process and the analysis of fatty acid composition.

Method used

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  • Method for gathering and purifying polyunsaturated fatty acid from mixed fatty acid of trichosanthes seed oil

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Embodiment Construction

[0025] Now take the laboratory implementation as an example, and the non-limiting examples are described as follows:

[0026] Take 25g of Trichosanthes seed oil in a round bottom flask, add 100ml of NaOH-methanol solution with a mass fraction of 4%, heat and reflux in a water bath at 80°C until the solution in the flask is clear and transparent, stop the reaction, and obtain a saponified solution, which is evaporated by rotary evaporation Partial methanol. After cooling the saponified solution to room temperature, add an appropriate amount of water to completely dissolve the saponified product. Extract with a small amount of n-hexane 2 to 3 times to remove unsaponifiable matter. The lower aqueous layer was removed, adjusted to pH 2-3 with 10% HCl solution, allowed to stand and separated, and then the organic phase was extracted 3 times with n-hexane, the organic phases were combined, and washed with water until neutral. Dry with anhydrous NaSO4, filter with suction, and then...

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Abstract

The invention relates to a method for gathering polyunsaturated fatty acid from trichosanthes seed oil. According to the method, the mixed fatty acid of the trichosanthes seed oil is taken as the raw material, and the polyunsaturated fatty acid (PUFA) of the mixed fatty acid is gathered and purified through a urea adduction method. The purification method sequentially comprises the following steps of preparing a urea-methanol solution, mixing the mixed fatty acid and the urea-methanol solution, adducting, leaching and separating, collecting filter liquor, extracting an organic phase, washing, drying, concentrating through decompression, and obtaining a PUFA product. The method is simple and reliable, is low in cost and has less environment contamination, and the solvent can be recycled. The rate of finished products can reach 40.92%, the purity of the finished products can reach 94.72%, and the finished products mainly comprise linoleic acid and linolenic acid. According to the method, high concentration PUFA can be obtained from the trichosanthes seed resource so as to produce products with high additional value and strong healthcare functions, and the method is beneficial to promoting comprehensive utilization and industrialization of trichosanthes.

Description

technical field [0001] The invention belongs to the field of separation and purification of natural products, and in particular relates to a method for purifying polyunsaturated fatty acids from mixed fatty acids of Trichosanthes quince seed oil. Background technique [0002] Trichosanthes kirilowii Maxim. is a perennial herbaceous vine medicinal plant of Cucurbitaceae Trichosanthes, mainly distributed in Anhui, Shandong, Henan, Zhejiang, Sichuan, Yunnan and other places. The dried mature seeds of Trichosanthes kirilowii Maxim. or Trichosanthes rosthornii Harms are called Trichosanthes seeds. The oil content in Trichosanthes seeds is 26%~49%, the content of unsaturated fatty acids is 66%~93%, mainly oleic acid and linoleic acid, and contains a variety of molecular configurations represented by citrus acid. Conjugated linolenic acid, the content of which exceeds 50% of the total amount of unsaturated fatty acids. [0003] According to the number of unsaturated bonds, unsatu...

Claims

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Application Information

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IPC IPC(8): C11C3/00
Inventor 丁之恩董玲孙潇辉吕萍张继刚魏芬
Owner ANHUI AGRICULTURAL UNIVERSITY
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