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Depickling method of cold-pressed peony seed oil

A technology of peony seed oil and deacidification method, which is applied in the direction of oil/fat refining, fat production, etc., can solve the problems of complex process, environmental pollution and high energy consumption, and achieves high deacidification efficiency, high safety, and low energy consumption. Effect

Inactive Publication Date: 2017-11-24
INST OF FORESTRY & FRUIT TREE WUHAN ACADEMY OF AGRI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is similar to the deacidification method of peony seed oil reported in the above-mentioned "Food Science" in 2008, and both belong to alkali refining deacidification, and the subsequent step of alkali refining deacidification requires multiple washings to remove fatty acid salts, and then vacuum removes moisture. Disadvantages such as complex process, high energy consumption, and environmental pollution

Method used

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  • Depickling method of cold-pressed peony seed oil
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  • Depickling method of cold-pressed peony seed oil

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1: the preparation of deacidifying agent

[0037] The present invention utilizes the alkaline solid deacidification agent prepared by sodium hydroxide and diatomite to deacidify cold-pressed peony seed degummed oil, and the process steps are: diatomite powder and hydrogen with a mass fraction of 5-25% The sodium oxide solution was mixed according to the solid-to-liquid ratio of 1:4-1:12, stirred and reacted at 100-500rpm at 30-70°C for 25-65min, and then spun and centrifuged at 8000rpm for 15min to obtain a precipitate; Rinse the precipitate with 95% ethanol, dry it in an oven at 60°C, and crush the dried product to 60 mesh to obtain alkaline diatomite. The acid value of peony seed oil was measured before and after deacidification, and the deacidification rate was calculated. The acid value of peony seed oil was determined by the neutralization titration method in GB / T 5530-2005 "Animal and Vegetable Fats and Fats: Determination of Acid Value and Acidity". ...

Embodiment 2

[0051] Embodiment 2: Deacidification condition optimization

[0052] Weighing 30g of cold-pressed peony seed degummed oil, adding 0.5-3.0% of the weight of peony seed oil with alkaline diatomite, and performing ultrasonic-assisted deacidification at a temperature of 25-50°C with a power of 60-110W for 8-14min, Then rotate and centrifuge at 8000rpm for 10 minutes, centrifuge twice, and pour out the supernatant, which is cold-pressed peony seed deacidified oil.

[0053] The present invention selects 4 factors of deacidification agent addition amount, deacidification temperature, ultrasonic power and ultrasonic time as a single factor, and their influence on the deacidification effect of peony seed oil is shown in Figure 6 , Figure 7 , Figure 8 and Figure 9 . Based on the single factor test results, the ultrasonic-assisted deacidification time was selected as 14 minutes in the deacidification process of cold-pressed peony seed oil, and then L was designed. 9 (3 3 ) that...

Embodiment 3

[0066] Example 3: Preparation of deacidification agent by replacing diatomite with mesoporous carbon

[0067] The mesoporous carbon powder and the sodium hydroxide solution with a mass fraction of 15% were mixed at a solid-to-liquid ratio of 1:8, stirred and reacted at 100 rpm for 55 min at 60°C, and then spun and centrifuged at 8000 rpm for 15 min. Obtain the precipitate; wash the precipitate with 95% ethanol, place it in a 60°C oven for drying, and crush the dried product to 60 meshes to obtain alkaline mesoporous carbon; in the degummed oil of cold-pressed peony seeds, add Alkaline mesoporous carbon with 2.0% weight of peony seed oil, under the temperature condition of 45 ℃, use ultrasonic power of 90W to assist deacidification for 14min, then spin and centrifuge at 8000rpm for 10min, centrifuge twice, and pour out the supernatant , which is cold-pressed peony seed deacidified oil. The acid value of the obtained peony seed degummed oil was 1.07mg KOH / g, and compared with t...

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Abstract

The invention belongs to the field of deep processing and comprehensive utilization of agricultural and sideline products and provides a depickling method of cold-pressed peony seed oil. according to the method, cold-pressed peony seed degummed oil is used as a raw material, sodium hydroxide and diatomite are selected for the preparation of an alkaline diatomite depickling agent, and an ultrasonic-assisted method is adopted for cooperative depickling of peony seed oil. The method has integrated effects of physical adsorption and chemical adsorption. On one hand, depickling efficiency of peony seed oil is raised by accelerating an acid-base reaction rate; and on the other hand, quality of peony seed oil is improved and the flavor of peony seed oil is maintained. The method has advantages of simple operation, short time consumption, high depickling efficiency, less energy consumption and high safety. In addition, quality of cold-pressed peony seed oil is optimized and flavor of peony seed oil is maintained. And the problem of large equipment investment is also solved.

Description

technical field [0001] The invention belongs to the field of deep processing and comprehensive utilization of agricultural and sideline products, and in particular relates to a method for deacidifying cold-pressed peony seed oil. Background technique [0002] Peony for oil is a unique woody oil plant resource in my country, and it is a general name for species with high seed oil yield (greater than or equal to 22%) in the Paeoniaceae Paeoniae group. Because its oil content can reach 24.12%-37.83%, the content of unsaturated fatty acid can reach 83.05-90.0%, what is even more commendable is that the content of polyunsaturated fatty acid linolenic acid can reach 31.56%-66.85%, and the content of linoleic acid can reach 28%. Many indicators exceed olive oil known as 'liquid gold', and the content of a-linolenic acid is 70 times that of olive oil, so it has attracted people's attention. Studies have shown that peony seed oil is also rich in amino acids, vitamins, polysaccharides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/06C11B3/00
CPCC11B3/001C11B3/06
Inventor 戢小梅陈法志李秀丽陈镇陈志伟金莉王燕董艳芳
Owner INST OF FORESTRY & FRUIT TREE WUHAN ACADEMY OF AGRI SCI & TECH
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