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Method for producing edible special grease base-material oil by interesterification reaction

A special technology for transesterification reaction and food, which is applied in the field of oil processing, can solve the problems of limited number of catalysis, high price of lipase, limited catalytic activity, etc., and achieve the effect of simple operation, good repeatability and low cost

Inactive Publication Date: 2012-02-22
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high price of lipase, limited catalytic activity, and relatively few catalytic times limit the widespread promotion of lipase in the ester exchange reaction in industrialization
Before 2011, sodium methoxide was the most widely used catalyst for the production of special grease by transesterification in my country. However, there is no processing aid of sodium methoxide in GB2760-2011. Therefore, the industrialized special grease base material that needs to be developed using new catalytic technology Oil products are very important

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take by weighing 50 grams of palm stearin and mix with 50 grams of soybean oil (the main fatty acid composition of the complete sample of raw material is: palmitic acid 38.60%, stearic acid 4.55%, oleic acid 27.18%, linoleic acid 26.60%, linolenic acid 2.59%; The main fatty acids at the sn-2 position are: 24.78% palmitic acid, 1.36% stearic acid, 34.30% oleic acid, 37.13% linoleic acid, 1.86% linolenic acid) placed in a three-necked flask, under stirring, at 150°C, Vacuum 1000Pa drying dehydration 1h. Then add 2% sodium hydroxide (based on oil quality), 5% glycerin (based on oil quality) and 0.05% water, react in a vacuum of 280Pa and 160°C for 100min, stop heating, cool down to 50°C, and add a small amount of lemon The acid solution destroys the catalyst and the by-product soap, washed with water until neutral, and then dried and dehydrated (120°C, vacuum 500Pa, 1.5h) to obtain the ester exchange reaction product. The main fatty acid composition of triglyceride, the p...

Embodiment 2

[0021] Take by weighing 100 grams of fractionated palm stearin (the main fatty acid composition of the complete sample of the raw material is: palmitic acid 60.78%, stearic acid 5.13%, oleic acid 27.19%, linoleic acid 5.21%, linolenic acid 0.35%; its sn-2 The main fatty acid composition is: 38.88% palmitic acid, 2.50% stearic acid, 46.86% oleic acid, 10.03% linoleic acid, 0.60% linolenic acid) placed in a three-necked flask, under stirring state, 130 ℃, vacuum 500Pa Dry and dehydrate for 2.5 hours, add 1.0% sodium hydroxide, 0.5% potassium acetate (based on oil mass), and 4% glycerin (based on oil mass), react at 140°C for 60 minutes under a vacuum of 300 Pa, and then stop heating. Cool down to 60°C, remove solid impurities and catalysts by centrifugation (4000r / min, 30min), wash with water until neutral, and then dry and dehydrate (130°C, vacuum 400Pa, 2.0h) to obtain the ester exchange reaction product. The main fatty acid composition of the whole sample of transesterificati...

Embodiment 3

[0023] Take by weighing 80 grams of lard (the main fatty acid composition of the complete sample of raw material is: palmitic acid 26.90%, palmitoleic acid 2.42%, stearic acid 15.34%, oleic acid 41.98%, linoleic acid 12.19%; Its sn-2 main fatty acid The composition is: 66.04% palmitic acid, 4.36% palmitoleic acid, 4.21% stearic acid, 16.00% oleic acid, 5.98% linoleic acid) placed in a three-necked flask, and dried and dehydrated at 110°C and vacuum 800Pa under stirring After 2.5 hours, adjust to 120°C, add 0.75% potassium hydroxide and 0.25% sodium carbonate (based on oil quality), and 1.5% glycerin and 0.5% propylene glycol (based on oil quality), react under vacuum 300Pa for 120 minutes and stop heating. Cool down to 60°C, first centrifuge (4500r / min, 30min) to remove solid impurities and catalysts, and then use diatomaceous earth to absorb and remove soap to obtain ester exchange reaction products. 26.08% palmitic acid, 2.86% palmitoleic acid, 15.27% stearic acid, 42.00% ol...

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Abstract

The invention relates to a method for producing an edible special grease base-material oil by an interesterification reaction. The method is characterized in that one or two or more edible greases are added with an alkali catalyst and an auxiliary agent for reaction; a mixture generated from the reaction is separated to remove the catalyst, the auxiliary agent and generated by-products like soap and water, etc, so as to obtain a needed interesterification product special for grease production. Compared with a prior art, the invention has advantages of no usage of sodium methoxide, safety, efficiency, low cost, simple operation, good repeatability and promising application prospect.

Description

[0001] technical field [0002] The invention relates to oil processing technology, in particular to a method for producing special-purpose edible oil base oil through transesterification reaction. [0003] Background technique [0004] With the improvement of people's living standards, the requirements for food are also getting higher and higher. Since the melting range, expansion characteristics, crispness and crystal form of most natural common edible oils cannot fully meet the requirements of the food industry for the use characteristics of oils, this creates a new development direction for the research on transesterification. The principle of transesterification reaction is to change the physical and chemical properties and use characteristics of oils and fats by changing the distribution of fatty acids at the acyl positions of sn-1, sn-2, and sn-3 (total fatty acid composition does not change). The ester exchange reaction technology is mainly used in the production o...

Claims

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Application Information

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IPC IPC(8): A23D7/04
Inventor 毕艳兰杨国龙孙尚德刘伟马传国李东锐金宁彭元怀李春宝
Owner HENAN UNIVERSITY OF TECHNOLOGY