Ultrahigh-pressure extraction method of silybum marianum seed oil
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A technology of milk thistle seed oil and extraction method, which is applied in the field of ultra-high pressure extraction of milk thistle seed oil, can solve the problems of complex process operation, high equipment requirements, low oil yield, etc. High oil rate, avoid deterioration effect
Inactive Publication Date: 2020-05-22
南京艾蒙利特生物科技有限公司
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[0005] In order to solve the problems of low oil yield, many impurities, complicated process operation and high equipment requirements in the method of providing milk thistle seed oil, the present invention proposes a method for extracting milk thistle seed oil by ultra-high pressure method
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Embodiment 1
[0015] The extraction process of milk thistle seed oil in the present embodiment is as follows:
[0016] (1) Pretreatment of milk thistle seeds
[0017] Dry the selected milk thistle seeds at 85°C for 24 hours, crush them, and sieve (60 mesh) to obtain milk thistle seed powder;
[0018] (2) Ultra-high pressure and suction filtration treatment of milk thistle seed powder
[0019] Select an appropriate amount of milk thistle seed powder and put it into a vacuum packaging bag, and add ether with a solid-liquid ratio of 1:4-1:6 as the extraction solvent, adjust the extraction temperature to 20-30°C, the pressure to 250-350MPa, and the holding time to 7-9min , take out and carry out suction filtration;
[0020] (3) Extraction of milk thistle seed oil
[0021] The liquid mixture obtained after suction filtration was rotary evaporated and dried to obtain milk thistle seed oil with an extraction rate of 69.5%.
Embodiment 2
[0023] (1) Pretreatment of milk thistle seeds
[0024] Dry the selected milk thistle seeds at 85°C for 24 hours, crush them, and sieve (60 mesh) to obtain milk thistle seed powder;
[0025] (2) Ultra-high pressure and suction filtration treatment of milk thistle seed powder
[0026] Select an appropriate amount of milk thistle seed powder and put it into a vacuum packaging bag, and add n-hexane with a solid-liquid ratio of 1:4-1:6 as the extraction solvent, adjust the extraction temperature to 40-50°C, the pressure to 250-350MPa, and the holding time for 7- 9min, take out and carry out suction filtration;
[0027] (3) Extraction of milk thistle seed oil
[0028] The liquid mixture obtained after suction filtration was rotary evaporated and dried to obtain milk thistle seed oil with an extraction rate of 67.9%.
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Abstract
The invention provides an ultrahigh-pressure extraction method of silybum marianum seed oil. The method comprises the following steps: pre-treating silybum marianum seeds, drying the selected silybummarianum seeds at 85 DEG C for 24 hours, crushing, and sieving to obtain silybum marianum seed powder; and adding a proper amount of the silybum marianum seed powder into a vacuum packaging bag, adding diethyl ether as an extraction solvent according to a certain solid-to-liquid ratio, adjusting a certain temperature and pressure, maintaining the pressure for a period of time, taking out, carryingout suction filtration, and finally extracting silybum marianum seed oil. According to the invention, oil extraction is carried out through an ultrahigh pressure method, so that the operation conditions are mild, deterioration of the oil at high temperature can be avoided, unsaturated fatty acids in the oil are well protected, and trace nutrition substances in the raw materials and excellent quality of the product are retained to the maximum extent.
Description
technical field [0001] The invention belongs to the field of natural product extraction, and relates to an ultrahigh-pressure extraction method of milk thistle seed oil. Background technique [0002] Milk thistle, also known as milk thistle and milk thistle, is a 2-year-old or 1-year-old herbaceous plant of the genus Milk thistle in the family Asteraceae. It is native to the Mediterranean coast and is also distributed wildly on the western grasslands of Asia. It is now cultivated in Europe, Asia, Africa, North and South America. Milk thistle is an excellent medicinal plant and oil plant. Both purple flower and white flower milk thistle seeds contain a lot of fat and are edible. The oil content is generally 20%-30%. Purple flower milk thistle seed oil contains 29.05-69.85% linoleic acid, 0.1-0.32% myristic acid, 7.72%-11.03%, 4.23-8.39% stearic acid, 4.61-48.55% oleic acid, 0.9-2.46% linoleic acid, 3.05-4.86% arachidic acid, 0.92-2.70% behenic acid and other fatty acids, o...
Claims
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Application Information
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