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Fixed lipase catalyzed synthesis of fatty acid low carbon alcohol ester

A technology for immobilizing lipase and synthesizing fatty acids, applied in the direction of fermentation, etc., can solve the problems of easy membrane blockage, high cost, complicated operation, etc., and achieve the effects of less by-products, lower production costs, and strong reaction specificity.

Inactive Publication Date: 2003-11-19
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The membrane reactor has high catalytic efficiency and can selectively remove the water generated in the reaction, but the membrane reactor also has problems such as high cost, complicated operation, and easy clogging of the membrane.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 0.12 g of immobilized enzyme (9000 U / g) was added to 5 mL of organic solvent containing 1 g of palmitic acid (0.54 mol / L) and 0.5 g of 2-ethylhexanol (0.7 mol / L). Under the condition of 40°C, the shaking reaction (190r / min) was performed for 24 hours, and the reaction conversion rate reached 91%.

Embodiment 2

[0031] 0.12 g of immobilized enzyme (9000 U / g) was added to 5 mL of organic solvent containing 1 g of palmitic acid (0.54 mol / L) and 0.67 g of 2-ethylhexanol (0.7 mol / L). Under the condition of 40°C, the reaction was shaken (190r / min), and the conversion rate reached 96.7% in 22 hours. The half-life is up to 150hr.

Embodiment 3

[0033] 0.12g of immobilized enzyme (9000U / g) was added to 5mL of organic solvent containing 1g of stearic acid (mol / L) and 0.62g of 2-ethylhexanol (0.65mol / L). Under the condition of 37°C, the reaction was shaken (190r / min), and the conversion rate reached 95% in 24 hours.

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Abstract

A process for catalytic synthesis of the low-carbon alcohol ester of fatty acid from immobilized lipase includes such steps as immobilizing lipase to inertial carrier membrane or fabric, combining it with metallic wire mesh to form novel reactor, and catalytic esterifying reaction between fatty acid and alcohol at 20-60 deg.C for 14-24 hr. Its advantages are high esterifying rate up to 90-97%, less by-product and low energy consumption.

Description

(1) Technical field [0001] The invention relates to biochemical industry, in particular to a method for catalyzing the reaction of fatty acid and alcohol to synthesize ester by using immobilized microbial lipase in a non-aqueous phase system. (2) Background technology [0002] Fatty acid esters are commonly used chemical substances in many industries such as food, textiles, plastics, and cosmetics. Fatty acid lower alcohol esters are one of the important industrial additives and surfactants. Aryl esters of short-chain fatty acids are important components of synthetic flavors and main raw materials for flavoring liquor. The low-carbon alcohol esters of long-chain fatty acids such as isooctyl palmitate, isopropyl ester, isopropyl myristate and octyl stearate are important oily raw materials for high-end cosmetics. This kind of long-chain fatty acid ester has good compatibility with skin, has good moisturizing and softening effects, and is widely used in bath products, hair p...

Claims

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Application Information

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IPC IPC(8): C12P7/64
Inventor 谭天伟陈必强叶华邓利
Owner BEIJING UNIV OF CHEM TECH
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