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Apparatus for esterifying oils and fats by use of enzymic method

An enzymatic esterification and oil technology, which is applied in the field of oil processing, can solve the problems of long reaction time, low conversion rate, and great influence on oil quality, and achieve the effect of improving the efficiency of esterification

Active Publication Date: 2015-07-01
WILMAR SHANGHAI BIOTECH RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods, such as chemical methods, have a greater impact on oil quality, while enzymatic methods are still limited to the laboratory level, and there are problems such as long reaction time and low conversion rate.

Method used

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  • Apparatus for esterifying oils and fats by use of enzymic method
  • Apparatus for esterifying oils and fats by use of enzymic method
  • Apparatus for esterifying oils and fats by use of enzymic method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Example 1. Enzymatic esterification reaction of rice oil and glycerol mixture with dispersed particle diameter below 1000 nanometers

[0071] Take 1000g of degummed rice oil and 20g of glycerin and mix them for 20min, and control the shear line velocity to 25m / s. Take a 50-gram sample, let it stand for 24 hours, and detect the particle size of glycerin by a polarizing microscope. The results are shown in Table 1.

[0072] Heat the pretreated and sheared degummed rice oil to 70°C, add 47.5g of immobilized enzyme preparation NOVOZYM435, and react at 75°C for 8 hours. During the reaction, use a vacuum system to evacuate to maintain the vacuum degree <10mbar. Sampling was performed every 2 hours, centrifuged at 10,000 rpm for 5 min, and the upper oil phase was collected to measure the acid value. The acid value of the obtained samples at different sampling points was detected.

Embodiment 2

[0073] Example 2 Enzymatic esterification reaction of rice oil and glycerin mixture with dispersed particle size of 5-15 microns

[0074] Mix 1000g of degummed rice oil and 20g of glycerol, shear and mix for 5min, and control the shear line speed to 20m / s, and obtain the pretreated and sheared degummed rice oil sample. Take a 50-gram sample, let it stand for 24 hours, and detect the particle size of glycerin by a polarizing microscope. The results are shown in Table 1.

[0075] Heat the pretreated and sheared degummed rice oil sample to 70°C, add 47.5g of immobilized enzyme preparation NOVOZYM435, and react at 75°C for 8 hours. During the reaction, use a vacuum system to maintain vacuum <10mbar. Sampling was performed every 2 hours, centrifuged at 10,000 rpm for 5 min, and the upper oil phase was collected to measure the acid value. The acid value of the obtained samples at different sampling points was detected.

Embodiment 3

[0082] Embodiment 3, the impact of adding nitrogen on the rate of esterification of rice oil

[0083] Weigh 1000g degummed rice oil sample, heat to 75°C, add 20g glycerol, shear at 10000rpm for 3min; add 50g immobilized enzyme preparation NovoZYM435, react at 75°C for 8h. During the reaction process, nitrogen gas was charged from the bottom of the reactant, and its flow rate was adjusted, while a vacuum pump was used to evacuate to maintain a vacuum degree of <10mbar. Samples were taken every 2 hours, centrifuged at 10,000 rpm for 5 minutes, and the upper oil phase was collected to measure the acid value and DAG content, and the esterification rate was calculated. The results are shown in Table 2.

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Abstract

The invention provides a method and an apparatus for esterifying oils and fats by use of an enzymic method. As long as the method or the apparatus is used for esterifying oils and fats by use of the enzymic method, the esterification efficiency of the oils and the fats can be effectively improved.

Description

technical field [0001] The invention belongs to the field of oil processing, and in particular relates to equipment for enzymatic esterification treatment of oil. Background technique [0002] The fatty acid composition in rice bran oil (rice oil) is reasonable, the ratio of oleic acid and linoleic acid is close to the ratio of 1:1 recommended by the World Health Organization (WHO), and rice bran oil is rich in nutrients, such as oryzanol, squal It is a kind of edible vegetable oil with reasonable nutrition. However, due to the very active lipase contained in rice bran, the fat contained in rice bran can be hydrolyzed into fatty acids in a short period of time under appropriate conditions, so that rice bran and rice bran oil are transported and stored between production enterprises, resulting in the production of rice bran oleic acid The value is high. At the same time, due to refining treatment, especially after deacidification treatment, the contents of oryzanol and tota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/64C12M1/40C12M1/38C11B3/00C11B3/06
CPCC11B3/003C11B3/06C12M21/18C12M29/06C12P7/6454
Inventor 孙周平李明洪丰李磊姜元荣王勇
Owner WILMAR SHANGHAI BIOTECH RES & DEV CENT
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