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A method for demulsifying and purifying vegetable crude oil

A technology for emulsifying crude oil and refining vegetable oil, applied in the direction of fat oil/fat refining, fat production, etc., can solve problems such as vegetable oil emulsification, and achieve the effects of mild working conditions, good effect, and easy availability of raw materials

Inactive Publication Date: 2015-11-04
HUBEI YIHENG TEA OIL IND SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the problem of vegetable oil emulsification in the existing aqueous enzymatic method and aqueous method, the present invention provides a method for demulsifying and purifying vegetable crude oil
No secondary pollution and a large amount of waste residue and wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: a kind of method of demulsification purification crude vegetable oil of the present invention, carry out according to the following steps:

[0019] a. Add 0.02%-0.1% polyacrylamide by weight to the emulsified crude oil obtained by the aqueous enzyme method or water-soluble method, and stir at 60-200 rpm for 30-60min at room temperature;

[0020] b. Separating the emulsified crude oil in step a with an ultrafiltration membrane at a pressure of 0.2-0.4 MPa and a temperature of 40-50° C. to obtain refined vegetable oil. In step a, the water content of the emulsified crude oil is <30%. The polyacrylamide in step a is food-grade polyacrylamide with a molecular weight of 8 million to 16 million.

Embodiment 2

[0021] Example 2: Grinding the corn germ; adding 1:6-8 water, adjusting the pH to 8.5, raising the temperature to 50°C, adding hydrolytic protease, and enzymolysis for 3 hours; centrifuging to obtain emulsified corn germ oil; adding 0.08% food grade Polyacrylamide PAM, stirred at 100rpm for 30min, fully mixed, ultrafiltration membrane pressure 0.35MPa, membrane separation at 40-50℃, clean oil yield 95%.

Embodiment 3

[0022] Example 3: steaming, frying and crushing oil sunflower seeds; adding 1:4-6 water, raising the temperature to 85°C, adjusting the pH to 6.5, and keeping it warm for 10 minutes. Then lower the temperature to 50°C, add neutral protease, and enzymatically hydrolyze for 3 hours; centrifuge to obtain emulsified sunflower oil; add 0.05% food-grade polyacrylamide PAM, stir at 60rpm for 30min to fully mix, and the pressure of the ultrafiltration membrane is 0.4MPa , 40-50 ℃ membrane separation, clean oil yield 94%.

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Abstract

The invention relates to a method for demulsifying and purifying plant crude oil. The method comprises the steps of separating in a process of extracting oil through an aqueous enzymatic method or an aqueous dissolving method to obtain a demulsified crude oil; adding PAM to evenly mix, and separating through a film to obtain demulsified, purified and refined oil, wherein the prepared protein isolate can be used as feed. The method is fine in process, simple in steps and capable of making full use of plant protein while obtaining high-purity plant oil.

Description

technical field [0001] The invention relates to a method for demulsifying and purifying vegetable crude oil. Background technique [0002] Tea seed is a unique woody plant oil crop in my country. The tea oil produced by it has extremely high nutritional value: the content of unsaturated fatty acids in tea oil can reach 90%, and the ratio of monounsaturated fatty acids to polyunsaturated fats is perfect. Known as "Oriental olive oil"; tea oil contains squalene, tocopherol, polyphenols and other antioxidants, which can provide multiple protections for maintaining human health. With the support of national policies, the tea seed industry chain has developed very rapidly, and its processing capacity and technical requirements are higher. [0003] Aqueous enzymatic method is a new oil extraction method, which can be applied to the oil extraction of oil seeds such as camellia oleifera, oil sunflower, rapeseed, sesame, soybean, peanut, corn germ, etc. It uses mechanical and enzyma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/02C11B3/00
Inventor 万端极吴楚银吴正奇田远政徐国念李猷吴登辉孙武欧阳小艳严玲杜志欣张崇坚
Owner HUBEI YIHENG TEA OIL IND SCI & TECH
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