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Preparation method of edible oil

A technology of edible oil and crude oil, which is applied in the direction of edible oil/fat, fat oil/fat refining, application, etc., can solve the problems of rapeseed oil flavor discount, oil yield reduction, etc., and achieve the effect of avoiding saponification reaction

Pending Publication Date: 2020-09-08
大海粮油工业(防城港)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the addition of liquid caustic soda, the saponification reaction of alkali and oil will occur in the above process, which will cause soapy taste in the product oil, and the original flavor of rapeseed oil will be greatly reduced, and because of the saponification reaction of alkali and oil, it will also cause Yield decreased

Method used

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  • Preparation method of edible oil

Examples

Experimental program
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Effect test

Embodiment 1

[0069] The rapeseed crude oil purchased from the oil mill or purchased from the oil mill is pumped to the workshop through the pump in the tank area, filtered to remove suspended impurities, then heated to 85°C by a heater, and then added with hot water at 90°C, the amount of hot water added 2% of the weight of the crude oil, then add a citric acid solution with a mass percentage of 50%, the addition of the citric acid solution is 0.2% of the oil weight, and then carry out high-speed mixing through a high-speed mixing reactor, and the rotating speed is 2940r / min. Under the action of stirring, the oil and citric acid are fully contacted, and then the crude oil mixed at high speed enters the acid reaction tank. The stirring speed of the acid reaction tank stirrer is 56r / min, and the acid reaction time is controlled for about 120 minutes. Hydrated phospholipids are fully converted into hydrated phospholipids;

[0070] Then the crude oil after the acid reaction is heated to 85.1°C...

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Abstract

The invention discloses a preparation method of edible oil. The preparation method of the edible oil comprises the steps: heating crude oil, adding hot water and a citric acid solution into the heatedcrude oil, and carrying out an acid reaction to obtain crude oil subjected to the acid reaction; heating the crude oil after the acid reaction, and then carrying out primary centrifugal separation toobtain light-phase oil; and adding hot water into the light-phase oil to carry out hydration reaction, carrying out secondary centrifugal separation, and drying to obtain the edible oil. Liquid caustic soda does not need to be added in the process of preparing the edible oil, so that saponification reaction between the alkali and the oil is avoided, and the problem that soap flavor exists in theedible oil obtained by an existing preparation method is solved.

Description

technical field [0001] The invention relates to the technical field of edible oil processing, in particular to a preparation method of edible oil. Background technique [0002] At present, the process adopted by most oil factories at home and abroad to produce edible oil is the neutralization alkali refining process. Such as figure 1 As shown, the neutralization alkali refining process is as follows: firstly, the coarsely filtered crude oil is heated to 40-90°C, and then a small amount of phosphoric acid or citric acid is added. Phosphoric acid or citric acid is used as an electrolyte to neutralize the colloidal dispersed particles The surface charge of the surface charge eliminates the ξ potential of the particle, changes the degree of hydration, and acts on the non-hydratable phospholipids in the oil to convert the non-hydratable phospholipids into hydratable phospholipids. Then use acid-base neutralization reaction, add a certain amount of NaOH liquid caustic soda, full...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/04C11B3/02C11B3/00A23D9/04
CPCC11B3/04C11B3/02C11B3/008C11B3/001A23D9/04
Inventor 李冬辉董先锋王钦许诗荣万炎黄杰邦
Owner 大海粮油工业(防城港)有限公司
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