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Method for extracting brassica rapa l. seed oil by using supercritical carbon dioxide

A carbon dioxide, supercritical technology, applied in the production of fat oil/fat, fat production, etc., can solve the problems of organic solvent residue, poor oil sensory quality, many impurities, etc., to achieve high oil yield, convenient operation, and high product purity. Effect

Inactive Publication Date: 2010-07-21
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0005] Technical problem The purpose of the present invention is to provide a method for extracting turnip seed oil with supercritical carbon dioxide, which solves the disadvantages of residual organic solvents, many impurities, low yield, and poor sensory quality of oil in the extraction of turnip seed oil using the prior art

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  • Method for extracting brassica rapa l. seed oil by using supercritical carbon dioxide
  • Method for extracting brassica rapa l. seed oil by using supercritical carbon dioxide
  • Method for extracting brassica rapa l. seed oil by using supercritical carbon dioxide

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Embodiment

[0031] The specific extraction methods of supercritical carbon dioxide extraction of turnip seed oil include:

[0032] (1) Raw material: mature seeds of turnip;

[0033] (2) Impurity removal: sieve to remove dust and other impurity particles in the turnip seeds;

[0034] (3) Drying: Dry the turnip seeds naturally or dry them in a constant temperature oven below 50°C, and the water content is less than 6%.

[0035] (4) pulverizing: the turnip seed is pulverized with a high-speed pulverizer, and sieved (40 mesh);

[0036](5) Supercritical carbon dioxide extraction: put the pulverized turnip samples into the extraction kettle of the supercritical carbon dioxide extraction device, adjust the extraction temperature to 46.10°C, the extraction time to 80.40min, the extraction pressure to 31.65MPa, and the appropriate carbon dioxide flow rate to 40kg / h , Separation I temperature 40 ℃, separation I pressure 8~9MPa, directly collects turnip seed oil with triangular flask at the exit o...

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Abstract

The invention relates to a method for extracting brassica rapa l. seed oil by using supercritical carbon dioxide, specially used for deep processing of brassica rapa l. seeds. Taking brassica rapa l. (Brassica rapa L.) seeds as the raw material, the method comprises the following process steps: the brassica rapa l. (Brassica rapa L.) seeds are treated by impurity removal, crushing and filtering, and is extracted by the supercritical carbon dioxide under the conditions that the extraction temperature is 46.10 DEG C, the extraction time is 80.40min and the extraction pressure is 31.65MPa, the brassica rapa l. seed oil extraction yield is 31.893-32.554 percent, and the purity of the brassica rapa l. seed oil is above 99 percent. A process for extracting the brassica rapa l. seed oil by using the supercritical carbon dioxide provides a new method for deep processing of the brassica rapa l. seeds, can efficiently carry out research on extracting the brassica rapa l. seed oil by the supercritical carbon dioxide, has the advantages of strong operability, favorable safety, higher yield, favorable repeatability, high extration yield, simple process, high product purity, non pollution and the like and can be used for extracting the brassica rapa l. seed oil in production.

Description

1. Technical field [0001] The invention relates to a method for extracting turnip seed oil with supercritical carbon dioxide, which is specially used for supercritical carbon dioxide extraction of turnip seed oil. 2. Background technology [0002] Turnip seed, also known as manjingzi, is the dry mature seed of cruciferous plant turnip (Brassica rapa L.). "Compendium of Materia Medica" records: "Manjingzi can rise and fall, can sweat and vomit, can urinate, and can improve eyesight and detoxify. Its merits are very great." "Uyghur Medicinal Material Standards" records: "Turnip seeds are mainly used to treat green blindness, dark eyes, jaundice, dysentery, dysuria, accumulation, and dysuria." Turnip seeds contain a variety of unsaturated fatty acids, such as: oleic acid, linoleic acid, erucic acid, neural acid and so on. [0003] At present, the domestic production of turnip seed oil mostly adopts pressing method or solvent extraction method. The oil yield of pressing method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10
Inventor 侯喜林董海艳
Owner NANJING AGRICULTURAL UNIVERSITY
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