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Method for refining silybum marianum seed oil by enzymic-method degumming

A technology for refining water and milk thistle, applied in the direction of oil/fat refining, fat production, etc., can solve the problems of oil emulsification and phospholipid separation difficulty, and achieve the effects of avoiding high-temperature vacuum decolorization, low degumming temperature and stable storage.

Inactive Publication Date: 2013-02-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at problems such as oil emulsification and phospholipid separation difficulties in the existing vegetable oil refining technology, and proposes a new refining method of milk thistle seed oil, which is effective Avoid the emulsification of oil and overcome the problem of difficult oil degumming

Method used

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  • Method for refining silybum marianum seed oil by enzymic-method degumming

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Place the container containing silymarin seed crude oil in a drying oven at 50°C. When the temperature of the sample reaches 50°C, keep it for 1 hour to separate the impurities from the oil, and remove the impurities by suction filtration. Take 100g crude oil, heat it in a water bath to 70-80°C, add 45% (w / v) citric acid solution at the same temperature according to the dosage ratio of 0.12mL / 100g crude oil, and maintain it for 20-30min under mechanical stirring at 500r / min. Lower the temperature of the crude oil to 50-55°C, and add 4% (w / v) NaOH solution to adjust the pH to 5-5.3. Add phospholipase according to the addition amount of 80mg / kg crude oil, keep warm for 4 hours, separate and remove peptized impurities, and obtain degummed oil;

[0030] Heat the degummed oil obtained above in a water bath to the set initial temperature of alkali refining (40°C), add a calculated amount of NaOH solution (concentration 10% (w / v)) under stirring conditions, and the total amoun...

Embodiment 2

[0034] Place the container containing silymarin seed crude oil in a drying oven at 50°C. When the temperature of the sample reaches 50°C, keep it for 1 hour to separate the impurities from the oil, and remove the impurities by suction filtration. Take 100g crude oil, heat it in a water bath to 70-80°C, add 45% (w / v) citric acid solution at the same temperature according to the dosage ratio of 0.12mL / 100g crude oil, and maintain it for 20-30min under mechanical stirring at 500r / min. Lower the temperature of the crude oil to 50-55°C, and add 4% (w / v) NaOH solution to adjust the pH to 5-5.3. Add phospholipase according to the addition amount of 120mg / kg crude oil, keep warm for 8 hours, separate and remove peptized impurities, and obtain degummed oil;

[0035] Heat the degummed oil obtained above in a water bath to the set initial temperature of alkali refining (40°C), add a calculated amount of NaOH solution (concentration 12% (w / v)) under stirring conditions, and the total amou...

Embodiment 3

[0039] Place the container containing the crude milk thistle seed oil in a drying oven at 50°C, and keep it for 1h after the sample temperature reaches 50°C. Separation of impurities and grease, suction filtration. Take 100g crude oil, heat it in a water bath to 70-80°C, add 45% (w / v) citric acid solution at the same temperature according to the dosage ratio of 0.12mL / 100g crude oil, and maintain it for 20-30min under mechanical stirring at 500r / min. Lower the temperature of the crude oil to 50-55°C, and add 4% (w / v) NaOH solution to adjust the pH to 5-5.3. Add phospholipase according to the addition amount of 100 mg / kg crude oil, keep warm for 6 hours, separate and remove peptized impurities, and obtain degummed oil;

[0040] Heat the degummed oil obtained above in a water bath to the set initial temperature of alkali refining (40°C), add a calculated amount of NaOH (alkali concentration 13% (w / v)) under stirring conditions, and the total amount of lye is the theoretical alk...

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Abstract

The invention discloses a method for refining silybum marianum seed oil by enzymic-method degumming and relates to the technical field of oil refining. The method includes the following steps: squeezing or leaching silybum marianum seeds to prepare silybum marianum seed oil, utilizing the principle that suspension impurities and oil have different densities to separate the impurities and the oil under the standing state or placing the silybum marianum seed oil into a 50 DEG C drying box for 1h, filtering to prepare crude oil, degumming the silybum marianum seed oil through phospholipase and conducting deacidification, decoloration and deodorization to obtain the refined silybum marianum seed oil. The enzymic-method degumming method adopts key technology for refining of the silybum marianum seed oil, remarkably reduces phospholipid content in the degummed silybum marianum seed oil, and is high in degumming efficiency, mild in reaction condition, low in energy consumption and easy to control. Silica gel is utilized as adsorbent to conduct decoloration and deodorization processing, high temperature vacuum decoloration and high temperature vacuum deodorization processing in the prior art are avoided, loss of effective components in the silybum marianum seed oil is reduced, and process flow is shortened.

Description

technical field [0001] The invention relates to a vegetable oil processing technology, in particular to a method for refining milk thistle seed oil. Background technique [0002] Silybum marianum (L.) Gaertn) is the fatty oil in the ripe fruit of the herb plant Silybum marianum (L.) Gaertn, accounting for about 30% of the total weight of the dry fruit. It is rich in palmitic acid, stearic acid, Various fatty acids such as arachidic acid, behenic acid, oleic acid and linoleic acid, as well as components such as protein, amino acid, fat, vitamins and trace elements, have the same nutritional value as soybean oil. Due to the high content of polyunsaturated fatty acids such as oleic acid and linoleic acid in milk thistle seed oil, it has the effects of lowering cholesterol, lowering blood lipids, inhibiting thrombosis, preventing atherosclerosis, preventing fatty liver, and anti-tuberculosis. , medicine and industrial fields have significant development and utilization prospect...

Claims

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Application Information

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IPC IPC(8): C11B3/00
Inventor 王亮梅琳李倩倩徐希明余江南
Owner JIANGSU UNIV
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