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Method with combination of low-temperature superfine grinding and ultrasonic subcritical extracting for almond oil

A low-temperature ultra-fine pulverization and critical extraction technology, which is applied in the production of fat/fat and fat production, can solve the problems of inability to ensure sufficient extraction of almond oil by rolling, restricting the continuous production of almond oil, and residual harmful solvents, etc. Large-scale industrialized continuous production, wide production practicability, no solvent residue effect

Inactive Publication Date: 2014-01-08
新疆农业科学院农产品贮藏加工研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] According to the subcritical extraction technology reported in the prior art, almond oil is directly extracted. Due to the different characteristics of almond and other plant seeds, the content of almond oil is very high, which can reach 50%-60%. Therefore, the body needs to crush a large amount of materials during operation. , the body is in a high temperature state, which will cause the almonds to be heated and sticky, and it is difficult to crush and sieve. Rolling cannot guarantee the full extraction of almond oil. In addition, the constraints of traditional extraction kettle equipment, and the most suitable extraction method for specific almonds These factors have different degrees of problems, which lead to the practical shortcomings of high extraction pressure, high extraction, high extraction efficiency, high residual harmful solvents, inconvenient operation, and high energy consumption in the commonly used almond oil extraction in the prior art. , which restricts the large-scale industrial continuous production of almond oil, needs to be solved urgently

Method used

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  • Method with combination of low-temperature superfine grinding and ultrasonic subcritical extracting for almond oil
  • Method with combination of low-temperature superfine grinding and ultrasonic subcritical extracting for almond oil
  • Method with combination of low-temperature superfine grinding and ultrasonic subcritical extracting for almond oil

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Effect test

Embodiment 1

[0038] Example 1: Extraction of almond oil by combining low-temperature ultrafine pulverization and ultrasonic subcritical extraction

[0039] See attached figure 1 , a method of combining almond oil with low-temperature ultrafine pulverization and ultrasonic subcritical extraction. The specific method is realized through the following technical steps:

[0040] (1) After the almonds are peeled and dried at room temperature, the moisture content should be controlled between 1% and 3%. The specially designed low-temperature and high-speed crushing device is used for crushing, so that the processed almond raw materials are directly processed at high speed by liquid nitrogen low temperature treatment. Ultrafine grinding, under the conditions of temperature -100°C, low-temperature treatment of materials for 10s, and rotating speed of 3000 rpm, to avoid sticky almonds due to heat during the high-speed ultrafine grinding process due to the very high content of almond oil, making it...

Embodiment 2

[0055] Example 2: Extraction of Almond Oil by Combining Low-Temperature Ultrafine Pulverization and Ultrasonic Subcritical Extraction

[0056] (1) Weigh the peeled and dried almonds and use a liquid nitrogen ultrafine pulverizer to crush them at low temperature and pass them through a 60-mesh sieve.

[0057] (2) Put the almonds crushed and sieved at low temperature into a 200-mesh sieve, spread them flat and roll them into the extraction axe, after vacuuming, put butane into the extraction tank, the solid-to-liquid ratio (almond powder: butane) 1:6.5, turn on the heater and hot water pump, raise the temperature to 50°C, keep the pressure at 0.6Mpa, then turn on the ultrasonic device at the bottom of the ultrasonic-subcritical combined extraction device, under the conditions of ultrasonic power 450 W and ultrasonic frequency 40KHZ Fully react for 30 minutes, then carry out precipitation, turn on the compressor, pump to 0.1Mpa, then turn on the vacuum pump to pump 4 times to -...

Embodiment 3

[0059] Example 3: Extraction of Almond Oil by Combining Low-Temperature Ultrafine Pulverization and Ultrasonic Subcritical Extraction

[0060] (1) Weigh the peeled and dried almonds and use a liquid nitrogen ultrafine pulverizer to pulverize them at low temperature and pass through a 40-mesh sieve.

[0061] (2) Put the almonds crushed and sieved at low temperature into a 200-mesh sieve, spread them flat and roll them into the extraction axe, after vacuuming, put butane into the extraction tank, the solid-to-liquid ratio (almond powder: butane) 1:8.5, turn on the heater and hot water pump, raise the temperature to 40°C, keep the pressure at 0.5Mpa, then turn on the ultrasonic device at the bottom of the ultrasonic-subcritical combined extraction device, under the conditions of ultrasonic power 400 W and ultrasonic frequency 40KHZ After fully reacting for 50 minutes, carry out precipitation, turn on the compressor, pump to 0.1Mpa, then turn on the vacuum pump to pump 4 times t...

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Abstract

The invention discloses a method with combination of low-temperature superfine grinding and ultrasonic subcritical extracting for almond oil. The method comprises the steps of carrying out low-temperature grinding on peeled almonds of which the water content is 1-3% by using a low-temperature liquid nitrogen superfine grinding device, screening by a 20-60-mesh screen, paving in a 200-mesh bolting silk, and then rolling into an ultrasonic subcritical extracting kettle; with liquefied butane as a solvent, under the conditions that the material-solvent ratio is 1: (4.5-8.5), the extracting temperature is 25-55 DEG C, the pressure is 0.45-0.65MPa, the ultrasonic power is 250-500W and the ultrasonic frequency is 40KHZ, reacting for 20-60min, extracting for one time, reducing the pressure to remove the solvent, and finally, centrifuging so as to obtain the almond oil. The extracting rate in one time can reach 98.26%, the extracting time is shortened by about 40% than that in the existing extraction method, and is shortened by about 20% than that in the supercritical extraction technology; the harmful residual solvent is avoided; the large-scale industrial continuous production of the almond oil is realized, and furthermore, the method has wide practicability in production.

Description

technical field [0001] The invention belongs to the technical field of fruit oil extraction and processing, in particular, the invention relates to the technical field of subcritical extraction of almond oil. Background technique [0002] Almond oil contains more than 95% unsaturated fatty acids, and its rich unsaturated fatty acids have good preventive and therapeutic effects on coronary heart disease, hypertension, hyperlipidemia and other cardiovascular diseases. It is not only a kind of edible health oil, but also An important raw material for a new generation of health food and cosmetics. [0003] At present, the extraction of almond oil mainly adopts solvent method and pressing method, as well as microwave-assisted, ultrasonic-assisted, enzymatic hydrolysis and supercritical CO 2 Extraction and other new technologies, but solvent method, microwave assisted, ultrasonic assisted have problems such as safety, energy saving, environmental protection, etc., squeeze method ...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/10C11B1/00
Inventor 张谦马燕张健过利敏邹淑萍孟伊娜阿塔吾拉铁木尔张平
Owner 新疆农业科学院农产品贮藏加工研究所
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