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Method for preparing organic acid glycerin fatty acid ester

A technology of glycerol fatty acid ester and organic acid glycerol, which is applied in the field of organic chemical synthesis to achieve the effects of high conversion rate, good emulsifying performance and improving tissue structure

Active Publication Date: 2010-01-27
河南正通食品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no relevant literature report on organic acid glycerol fatty acid ester as a kind of preparation method

Method used

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  • Method for preparing organic acid glycerin fatty acid ester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 186Kg of acetic anhydride, 1050Kg of glycerol stearate, and 1.2Kg of catalyst phosphoric acid into the reaction kettle, heat to 130-145°C for acetylation reaction for 1-1.5 hours, continue to heat up to 160°C, and then cool down to 100°C, then evacuate and heat up to 165°C for 30 minutes until no acid is extracted. After the acid value is less than 6.0 mg KOH / g, cool down to 60°C and refine to obtain glyceryl acetate stearate. The total acetic acid in the product accounts for 9.2%, and the total glycerin accounts for 25.6%.

Embodiment 2

[0020] Add 408Kg of acetic anhydride, 550Kg of glycerol laurate, and 0.8Kg of catalyst sulfuric acid into the reaction kettle, heat to 130-145°C for acetylation reaction for 1-1.5 hours, continue to heat up to 160°C, and then cool down to 100°C after no acid ℃, then evacuate and heat up to 165 ℃ for 30 minutes until no acid is drawn out. After the acid value is less than 6.0 mg KOH / g, cool down to 60 ℃ and refine to obtain glyceryl acetate laurate. The total acetic acid in the product accounts for 31.8%, the total glycerin accounts for 24.7%

Embodiment 3

[0022] Add 248Kg of lactic acid into the reaction kettle, add 805Kg of glycerol stearate and 4.3Kg of catalyst phosphoric acid under stirring, and heat to 180-190°C for esterification reaction for 10 hours under vacuum. After the acid value is less than 6.0 mg KOH / g, cool down to Refined at 60°C to obtain lactic acid glyceryl stearate. The total lactic acid in the product accounts for 24.5%.

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Abstract

The invention discloses a method for preparing organic acid glycerin fatty acid ester, belonging to the technical field of organic chemistry synthesis. The method comprises: heating organic acid and glycerin fatty acid ester to 130-190 DEG C to have reaction in vacuum for 3-10h under the action of catalyst sodium hydroxide, potassium hydroxide, sulfuric acid or phosphoric acid, and obtaining the organic acid glycerin fatty acid ester. The synthesis method is simple and feasible as well as convenient for industrialized production, and has high conversion rate reaching 90%. The synthesized organic acid glycerin fatty acid ester can be used for food emulsifying agent, so as to lead the volume of food such as bread, cake and the like to be increased; furthermore, the organic acid glycerin fatty acid ester can improve the organization structure, enhance the elasticity, the toughness and the gas-holding performance of dough, and lead grease, plant fat cream and the like to have good emulsifying property.

Description

technical field [0001] The invention relates to a preparation method of a class of organic acid glycerin fatty acid ester, which belongs to the technical field of organic chemical synthesis. Background technique [0002] Organic acid glycerin fatty acid ester is a kind of food emulsifier, its organic acid is acetic acid, tartaric acid, lactic acid, citric acid, succinic acid, after reacting with glycerin fatty acid ester, it can be made into acetic acid glycerin fatty acid ester, diacetyl tartaric acid glycerin fatty acid Glyceryl lactic acid fatty acid ester, glyceryl citric fatty acid ester, glyceryl succinic fatty acid ester. After the free hydroxyl groups in fatty acid esters of glycerol are esterified by organic acids, fatty acid ester derivatives of glycerol with different hydrophilic / lipophilic properties are formed, thereby obtaining emulsifiers with different functions compared with fatty acid esters of glycerol, They are used in bread, cakes, biscuits, non-dairy c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/003C07C67/03C07C69/18C07C69/70C07C69/68C07C69/704C07C69/40B01J27/16B01J23/04B01J27/02A23L1/035A23L29/10
Inventor 楚军政王青
Owner 河南正通食品科技有限公司
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