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Preparation method of medium-chain polyglycerol fatty acid ester

A medium-carbon chain fatty acid and polyglycerol ester technology, which is applied in the directions of fatty acid preparation/refining, fatty acid esterification, fatty acid production, etc., can solve problems such as high energy consumption and production cost, low carbon chain fatty acid content, and difficult separation of catalysts. , to achieve the effect of less emission, good dispersion and easy separation

Inactive Publication Date: 2012-07-11
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the industrial synthesis of polyglycerol esters of medium-carbon chain fatty acids mainly uses coconut oil and palm kernel oil as raw materials, and is prepared by hydrolysis, cracking, esterification or alcoholysis. Low chain fatty acid content, difficult separation of catalysts, large acid-base salt discharge, large equipment investment, high energy consumption and production costs, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Degumming and hydrolyzing camphor seed oil.

[0025] Weigh 200g of camphor tree seed oil in a 1000ml beaker (degumming reactor), stir and heat to 65±2℃, add 0.20% phosphoric acid (85% concentration) 0.4g of oil weight and 10% oil weight while stirring. 65±2℃ water 20g, continue to stir for 25min and then stop stirring, leave it for 20min and centrifuge. Put the degummed camphor tree seed oil into a 1000ml beaker (hydrolysis reactor), stir and heat to 75±2℃, add sodium hydroxide solution (concentration 20%) while stirring until the saponification is complete, then stir while stirring Add hydrochloric acid solution (concentration 36%) to complete acidification. After standing for separation, wash with 75±2℃ water until the washing liquid is neutral. After that, enter the rotary evaporator (vacuum dehydrator) and dehydrate for 40 minutes at a temperature of 75±2°C and the corresponding vacuum degree to obtain 172.5g of medium-carbon chain fatty acids, and the yield of me...

Embodiment 2

[0033] (1) Degumming and hydrolyzing camphor seed oil.

[0034] Weigh 200g of camphor seed oil in a 1000ml beaker (degumming reactor), stir and heat to 70±2℃, add 0.3g of phosphoric acid (with a concentration of 85%) of 0.15% oil weight and 10% oil weight while stirring 70±2℃ water 20g, continue to stir for 20min, stop stirring, leave it for 15min and centrifuge. Put the degummed camphor seed oil into a 1000ml beaker (hydrolysis reactor), stir and heat to 80±2℃, add sodium hydroxide solution (concentration of 15%) while stirring until the saponification is complete, then stir while stirring Add hydrochloric acid solution (concentration 36%) to complete acidification. After standing for separation, wash with 80±2℃ water until the washing liquid is neutral. After that, it enters the rotary evaporator (vacuum dehydrator) and dehydrates it at a temperature of 80±2℃ and the corresponding vacuum degree for 35 minutes to obtain 175.3g of medium-carbon chain fatty acids with a yield of ...

Embodiment 3

[0042] (1) Degumming and hydrolyzing camphor seed oil.

[0043] Weigh 200g of camphor tree seed oil in a 1000ml beaker (degumming reactor), stir and heat to 75±2℃, add 0.3g of phosphoric acid (concentration of 80%) of 0.15% oil weight and 15% oil weight while stirring 75±2℃ water 30g, continue to stir for 15min, then stop stirring, leave it for 10min and centrifuge. Put the degummed camphor tree seed oil into a 1000ml beaker (hydrolysis reactor), stir and heat to 85±2℃, add sodium hydroxide solution (concentration 20%) while stirring until the saponification is complete, then stir while stirring Add hydrochloric acid solution (concentration 36%) to complete acidification. After standing for separation, wash with 85±2℃ water until the washing liquid is neutral. After that, it enters the rotary evaporator (vacuum dehydrator) and dehydrates for 30 minutes at a temperature of 85±2°C and the corresponding vacuum degree to obtain 174.7g of medium chain fatty acids, and the yield of me...

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Abstract

The invention discloses a preparation method of medium-chain polyglycerol fatty acid ester. The method uses camphor tree seed oil as a raw material and comprises the following steps: hydrolyzing the degummed and dewatered camphor tree seed oil, and performing saponification and acidification treatment; placing the separated medium-chain fatty acid ester and different polymerization degrees of polyglycerol in an esterification reactor, then adding a defined amount of a solid base KOH / Al2O3 catalyst, injecting nitrogen for protection, and heating and stirring to perform an esterification reaction; adding the obtained medium-chain polyglycerol fatty acid ester in a deacidification reactor for reacting to obtain medium-chain polyglycerol fatty acid ester of which yield is 95%; and placing thedeacidified medium-chain polyglycerol fatty acid ester in a dewatering decolorizer to obtain medium-chain polyglycerol fatty acid ester of which yield is 98%. According to the invention, the solid base KOH / Al2O3 catalyst is used as the esterification catalyst to synthesize medium-chain polyglycerol fatty acid ester, the solid base catalyst is easy in separation and can be reused, the solid waste emission is low and the green synthesis of polyglycerol ester is realized.

Description

Technical field [0001] The invention belongs to the technical field of chemical engineering, and particularly relates to a preparation method of polyglycerol ester food additives. Background technique [0002] Polyglyceryl fatty acid ester, also known as polyglyceryl fatty acid ester (PGFE), polyglyceryl ester for short, is a polyol type nonionic surfactant, containing hydrophilic groups and lipophilic groups, and has a Dual characteristics of water and lipophilicity. Compared with monoglyceride (monoglyceride, MG), fatty acid polyglyceride contains more hydrophilic hydroxyl groups, stronger hydrophilicity, good dispersibility in water, emulsification, dispersion, wetting, stability, and Better performance such as foam. By changing the degree of polymerization of the polyglycerol raw material, the type of fatty acid raw material and the degree of esterification of the product, polyglycerol ester products with different HLB values ​​(8-20), from lipophilic to hydrophilic, can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/00C11C3/02C11C1/04C11B3/00C11B3/06C11B3/10
Inventor 曾哲录
Owner NANCHANG UNIV
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