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Preparation method and application of sodium stearyl lactate

A technology of sodium stearoyl lactylate and stearic acid, which is applied in the chemical industry, can solve problems that have not yet been discovered, and achieve the effects of fine and smooth taste, short reaction cycle and high yield

Inactive Publication Date: 2015-12-16
GUANGZHOU CARDLO BIOCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After searching, no compound of sodium stearoyl lactylate, propylene glycol monostearate, polyglycerol monooleate, xanthan gum and gum arabic has been found to be used in vegetable protein beverages

Method used

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  • Preparation method and application of sodium stearyl lactate
  • Preparation method and application of sodium stearyl lactate
  • Preparation method and application of sodium stearyl lactate

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1, the preparation method of sodium stearoyl lactylate of the present invention

[0023] Add 400mol lactic acid into water, the weight ratio of lactic acid to water is 1:1.5, stir evenly, then add 133mol sodium carbonate, stir at 60°C for 1h, then add 200mol stearic acid and 18mol polyethylene glycol-400, at temperature React at 165°C for 2 hours under a vacuum of 0.08MPa. After the reaction is completed, the product is recrystallized with absolute ethanol, and after vacuum drying, sodium stearoyl lactylate is obtained. The obtained sodium stearoyl lactylate is a white brittle solid.

Embodiment 2

[0024] Embodiment 2, the preparation method of sodium stearoyl lactylate of the present invention

[0025] Add 250mol lactic acid into water, the weight ratio of lactic acid to water is 1:1, stir evenly, then add 100mol sodium carbonate, stir at 55°C for 1.5h, then add 200mol stearic acid and 20mol polyethylene glycol-400, in React at a temperature of 160°C and a vacuum of 0.09 MPa for 3 hours. After the reaction is completed, the material is discharged. The product is recrystallized with absolute ethanol and dried in vacuum to obtain sodium stearoyl lactylate. The obtained sodium stearoyl lactylate is a light yellow brittle solid.

Embodiment 3

[0026] Embodiment 3, the preparation method of sodium stearoyl lactylate of the present invention

[0027] Add 400mol lactic acid into water, the weight ratio of lactic acid to water is 1:2, stir evenly, then add 100mol sodium carbonate, stir at 65°C for 1h, then add 100mol stearic acid and 8mol polyethylene glycol-400, at temperature React at 180°C for 2.5 hours under a vacuum of 0.07 MPa. After the reaction is complete, the material is discharged. The product is recrystallized with absolute ethanol and dried in vacuum to obtain sodium stearoyl lactylate. The obtained sodium stearoyl lactylate is a light yellow brittle solid.

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Abstract

The invention discloses a preparation method of sodium stearyl lactate. The preparation method comprises the following steps: adding lactic acid into water; performing uniform stirring; adding sodium carbonate; performing stirring for 1-1.5h at 55-65 DEG C; adding stearic acid and polyethylene glycol-400; performing a reaction for 2-3h at a temperature of 160-180 DEG C and at a vacuum degree of 0.07-0.09 MPa; discharging the obtained product after the reaction is over; recrystallizing the obtained product with absolute ethanol; and performing vacuum drying to obtain sodium stearyl lactate. The preparation method is high in yield, mild in reaction condition, short in production cycle, low in energy consumption, and less in production cost. At the same time, the invention further provides a stabilizer for a vegetable protein drink, wherein the stabilizer comprises prepared sodium stearyl lactate, propylene glycol monostearate, polyglycerol monooleate, xanthan gum, and Arabic gum. The stabilizer can effectively improve the stability of the vegetable protein drink.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a preparation method and application of sodium stearoyl lactylate. Background technique [0002] Sodium stearoyl lactylate is a white to light yellow brittle solid or powder with a slight caramel smell. It can be used as an anionic surfactant, food emulsifier, cosmetic emulsifier and thickener. At present, there are two main methods for preparing sodium stearoyl lactylate: (1) Heating lactic acid to 100-110°C under reduced pressure, concentrating, and heating the concentrated lactic acid to 190-200°C in an atmosphere of inert gas carbon dioxide It is obtained by reacting stearic acid and sodium carbonate and cooling after the reaction is completed; (2) It is obtained by first neutralizing lactic acid into sodium salt, and then esterifying it with stearic acid. Geng Min and others studied the optimization of the synthesis method of sodium stearoyl lactylate,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/675C07C67/08A23C11/10A23L2/62A23L2/38A23L11/65
CPCA23C11/10A23L2/38A23L2/62C07C67/08C07C69/675
Inventor 徐怀义
Owner GUANGZHOU CARDLO BIOCHEM TECH
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