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Acid reducing process of rice oil

A rice oil and process technology, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of difficulty in further obtaining rice oil, high acid value of crude oil, gastrointestinal discomfort, etc., and achieve a clear and transparent taste, and the acid reduction effect is obvious. , the effect of reducing energy consumption

Inactive Publication Date: 2015-05-13
BENGBU QIONGHUAI GRAIN & OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Rice oil is rich in active substances such as vitamin E, oryzanol, and tocopherol, and has health care functions for the human body to delay aging, cerebral blood vessels, and nervous system. It is a high-quality rice oil. The acid value of oleic acid is high (acid value as high as 28±1mg / g), the colloid is large, and the color is deep, so it is difficult to further obtain higher quality rice oil; High, can cause gastrointestinal upset, diarrhea and damage to the liver in humans

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Using rice bran containing rice germ as raw material, the crude oil is obtained by leaching. The acid value of the leached crude oil is 28±1mg / g. It is characterized in that it includes the following steps: (1) The leached crude oil enters through the oil storage tank In the hydration pot, add phosphoric acid with a mass of crude oil of 3‰, stir for 20 minutes to remove non-hydratable phospholipids, then raise the temperature to 70°C, add 80°C hot water with 5% of the mass of crude oil, stir for 40 minutes, and settle for 8 hours Carry out hydration and degumming; (2) Dry the degummed oil at 120°C with a reaction pressure of 6KPa to reduce the moisture content of the degummed oil to less than 1% to obtain dry oil; (3) Pump the dry oil into the crystallization tank and carry out degumming at 18~20°C Crystallize for 22 hours, grow crystals for 8 hours, and pass through a plate filter press to obtain dewaxed oil; (4) The dewaxed oil enters the continuous decolorization towe...

Embodiment 2

[0012] Using rice bran containing rice germ as raw material, the crude oil is obtained by leaching. The acid value of the leached crude oil is 28±1mg / g. It is characterized in that it includes the following steps: (1) The leached crude oil enters through the oil storage tank In the hydration pot, add phosphoric acid with a mass of crude oil of 3‰, stir for 20 minutes to remove non-hydratable phospholipids, then raise the temperature to 70°C, add 78°C hot water with 5% of the mass of crude oil, stir for 40 minutes, and settle for 8 hours Carry out hydration degumming; (2) Dry the degummed oil at 120°C with a reaction pressure of 4KPa to reduce the moisture content of the degummed oil to less than 1% to obtain dry oil; (3) Pump the dry oil into the crystallization tank and carry out degumming at 18~20°C Crystallize for 22 hours, grow crystals for 8 hours, and pass through a plate filter press to obtain dewaxed oil; (4) The dewaxed oil enters the continuous decolorization tower, a...

Embodiment 3

[0014]Using rice bran containing rice germ as raw material, the crude oil is obtained by leaching. The acid value of the leached crude oil is 28±1mg / g. It is characterized in that it includes the following steps: (1) The leached crude oil enters through the oil storage tank In the hydration pot, add phosphoric acid with a mass of crude oil of 3‰, stir for 20 minutes to remove non-hydratable phospholipids, then raise the temperature to 70°C, add 75°C hot water with 5% of the mass of crude oil, stir for 40 minutes, and settle for 8 hours Carry out hydration degumming; (2) Dry the degummed oil at 120°C with a reaction pressure of 9KPa to reduce the moisture content of the degummed oil to less than 1% to obtain dry oil; (3) Pump the dry oil into the crystallization tank and carry out degumming at 18~20°C Crystallize for 22 hours, grow crystals for 8 hours, and pass through a plate filter press to obtain dewaxed oil; (4) The dewaxed oil enters the continuous decolorization tower, an...

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Abstract

The invention discloses an acid reducing process of rice oil. The process comprises the following steps of: with rice bran containing rice germs as raw material, preparing crude oil by a leaching method; adding phosphoric acid into the crude oil to remove non-hydratable phospholipid, adding hot water for hydrating and deguming, and then drying, de-waxing, de-coloring, separating oxygen by a de-aerator, separating acid for the first time in a film evaporator, performing physical secondary acid removing in a combined plate type tower through a heater, adding alkali liquor, carrying out soap removing separation in a centrifugal machine, washing in a water washing centrifugal machine, de-coloring again, removing odor, and finally de-greasing by a winterization filter, so as to obtain low-acid-value rice oil. The acid reducing effect of the acid reducing process is significant, the acid value of the crude oil is reduced from 28+ / -1mg / g to 0.2-0.5mg / g; so low-avid-value and high-quality rice oil is possibly prepared from high-acid-value crude oil.

Description

technical field [0001] The invention belongs to the technical field of oil deep processing, and in particular relates to a new process for acid-reducing production of rice oil with high acid value. technical background [0002] Rice oil is rich in active substances such as vitamin E, oryzanol, and tocopherol, and has health care functions for the human body to delay aging, cerebral blood vessels, and nervous system. It is a high-quality rice oil. The acid value of oleic acid is high (acid value as high as 28±1mg / g), the colloid is large, and the color is deep, so it is difficult to further obtain higher quality rice oil; High levels can cause gastrointestinal upset, diarrhea and damage to the liver in humans. Contents of the invention [0003] The purpose of the present invention is to provide a rice oil acid-reducing process with high efficiency, low consumption and significant economic benefits, which makes it possible to further process rice oil with low acid value and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/04C11B3/06C11B3/10C11B3/16
CPCC11B3/001C11B3/04C11B3/06C11B3/10C11B3/16
Inventor 宋代江
Owner BENGBU QIONGHUAI GRAIN & OIL
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