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Refining method of rice bran oil retaining oryzanol

A technology for rice bran oil and oryzanol, which is applied in the field of rice bran oil refining with oryzanol retention, can solve the problems of high acidity of rice bran oil, decomposition loss, reduction of nutritional value of rice bran oil, etc., achieve low acid value, reduce the loss of high-temperature decomposition, and improve color and luster. quality effect

Pending Publication Date: 2021-06-04
BENGBU QIONGHUAI GRAIN & OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a rice bran oil refining method that retains oryzanol, which solves the problem of high acidity of rice bran oil in the prior art, and the large amount of oryzanol contained in rice bran oil is decomposed and lost during the refining process, which reduces the nutritional value of rice bran oil. question

Method used

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  • Refining method of rice bran oil retaining oryzanol
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  • Refining method of rice bran oil retaining oryzanol

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A method for refining rice bran oil that retains oryzanol, specifically comprising the following steps:

[0037] Step 1, impurity removal: pump crude rice bran oil into the oil inlet pipe 1021 of the filter press and impurity removal equipment, start the air pump 301, and control the reversing switch 303, so that the cylinder rod 307 supports the binder plate assembly 2 to approach the filter frame assembly 4 slide in the direction until the pressure plate assembly 2 compresses the filter frame assembly 4, increasing the pressure of the oil inlet pipe 1021, so that the crude rice bran oil is filled into the filter frame assembly 4, and after filtering and removing impurities, it is obtained at the oil outlet pipe 1022. Trash oil removal;

[0038] Step 2, degumming: Heat the miscellaneous oil to 65°C with a heater, then add food-grade phosphoric acid with a mass fraction of 85%, stir for 15 minutes, cool to 35°C after stirring, add sodium hydroxide with a mass fraction o...

Embodiment 2

[0047] A method for refining rice bran oil that retains oryzanol, specifically comprising the following steps:

[0048] Step 1, impurity removal: pump crude rice bran oil into the oil inlet pipe 1021 of the filter press and impurity removal equipment, start the air pump 301, and control the reversing switch 303, so that the cylinder rod 307 supports the binder plate assembly 2 to approach the filter frame assembly 4 slide in the direction until the pressure plate assembly 2 compresses the filter frame assembly 4, increasing the pressure of the oil inlet pipe 1021, so that the crude rice bran oil is filled into the filter frame assembly 4, and after filtering and removing impurities, it is obtained at the oil outlet pipe 1022. Trash oil removal;

[0049] Step 2, degumming: Heat the miscellaneous oil to 70°C with a heater, then add food-grade phosphoric acid with a mass fraction of 85%, stir for 18 minutes, cool to 37°C after stirring, add sodium hydroxide with a mass fraction o...

Embodiment 3

[0058] A method for refining rice bran oil that retains oryzanol, specifically comprising the following steps:

[0059] Step 1, impurity removal: pump crude rice bran oil into the oil inlet pipe 1021 of the filter press and impurity removal equipment, start the air pump 301, and control the reversing switch 303, so that the cylinder rod 307 supports the binder plate assembly 2 to approach the filter frame assembly 4 slide in the direction until the pressure plate assembly 2 compresses the filter frame assembly 4, increasing the pressure of the oil inlet pipe 1021, so that the crude rice bran oil is filled into the filter frame assembly 4, and after filtering and removing impurities, it is obtained at the oil outlet pipe 1022. Trash oil removal;

[0060] Step 2, degumming: heat the decontamination oil to 75°C with a heater, then add food-grade phosphoric acid with a mass fraction of 85%, stir for 20 minutes, cool to 40°C after the stirring is completed, and add sodium hydroxide...

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Abstract

The invention discloses a refining method of rice bran oil retaining oryzanol. The refining method comprises the steps of 1, conducting filter pressing impurity removal; 2, degumming with acid and alkali in sequence; 3, pre-decolorizing by using a small amount of activated clay, and then adding a large amount of activated clay under vacuum and high temperature for re-decolorizing; 4, performing low-temperature crystallization, filtration and dewaxing; 5, performing high-temperature steam stripping deacidification and deodorization; and 6, performing low-temperature low-speed stirring crystallization filter pressing degreasing. Filter pressing impurity removal equipment used in the first step comprises a machine frame component, a material pressing plate assembly, a pneumatic mechanism, a filter frame assembly and a material receiving trolley, the pneumatic mechanism is located on one side of the machine frame component, the filter frame assembly is located above the other side of the machine frame component, the material pressing plate assembly is located between the pneumatic mechanism and the filter frame assembly, and the material receiving trolley is oppositely arranged below the machine frame component. The problems that rice bran oil is large in acidity, and a large amount of oryzanol is decomposed and consumed in the refining process in the prior art are solved, and the nutritive value of the rice bran oil is increased.

Description

technical field [0001] The invention belongs to the technical field of edible vegetable oil refining, and in particular relates to a method for refining rice bran oil that retains oryzanol. Background technique [0002] Rice bran is a by-product of the processing of rice into rice. my country is a big rice producing country in the world. According to statistics, 13-14 million tons of rice bran are produced in my country's rice processing process every year. The oil content in rice bran is 15%-23%, which is equivalent to the fat content in soybeans. Therefore, rice bran is an important edible oil raw material. As a natural vegetable oil, rice bran oil is not only rich in unsaturated fatty acids, but also rich in ingredients that can improve immunity, lower cholesterol, regulate blood lipids, and prevent arteriosclerosis, such as oryzanol, sterol vitamin E, squalene, etc. . Oryzanol is a unique cycloartenyl ferulate in rice bran oil, and it is an important active ingredient...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/10C11B3/04C11B3/00
CPCC11B3/001C11B3/008C11B3/04C11B3/10C11B3/00
Inventor 宋代江方厚凯
Owner BENGBU QIONGHUAI GRAIN & OIL
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