Enzyme catalysis method for continuous synthesis of lauroyl maltose under organic phase

A technology of lauric acid ester and maltose, applied in the field of food biochemical industry, can solve the problems of batch production not suitable for large-scale industrial production, complicated separation work, slow reaction rate, etc., and achieves mild conditions, simple separation and purification, and increased yield Effect

Inactive Publication Date: 2007-07-11
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Currently commercially available sugar ester products are basically chemically synthesized. The reaction is carried out under high temperature and high pressure, and the product is a complex mixture. To obtain a high-purity product, complicated separation work is required, and the product often has a darker color.
And adopt batch reactor enzymatic synthesis,

Method used

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  • Enzyme catalysis method for continuous synthesis of lauroyl maltose under organic phase

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] At the beginning of the reaction, the concentration of maltose was 25mmol / L (2.125g), 250ml of 100mmol / L acetone laurate solution, 20g / L lipase, and 8g / L maltose was added to the reactor every day after the reaction, 100mmol / L. L lauric acid acetone solution enters the reactor at a flow rate of 0.36 ml / min, and reacts for 10 days. The yield and the amount of product obtained after separation and purification are shown in Table 1.

[0036] Table 1

[0037] Days

Embodiment 2

[0039]At the beginning of the reaction, the concentration of maltose was 50mmol / L (4.275g), 250ml of 200mmol / L lauric acid acetone solution, 40g / L lipase, and 12g / L maltose and 200mmol / L lauric acid were added every day in the reaction. The acetone solution enters the reactor at a flow rate of 0.2ml / min and reacts for 10 days. The yield and the amount of product obtained after separation and purification are shown in Table 2.

[0040] Table 2

[0041] Days

Embodiment 3

[0043] At the beginning of the reaction, the concentration of maltose was 100mmol / L, 250ml of 300mmol / L lauric acid acetone solution, and 60g / L lipase were added to the reactor. After that, 16g / L maltose was added every day in the reaction, and 300mmol / L lauric acid acetone solution was 0.15 The flow rate of ml / min enters the reactor and reacts for 10 days. The yield and the product volume obtained after separation and purification are shown in Table 3.

[0044] table 3

[0045] Days

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Abstract

The invention discloses a continuous synthesizing method of maltose laurate in the organic phase, which is characterized by the following: using stirring tank typed enzyme reactor to synthesize maltose laurate; affirming optimum manufacturing condition; maintaining the reactor production at 10g/(L .d) for 8-10d; obtaining the purity of product to 95%.

Description

Technical field [0001] The invention relates to a method for continuously synthesizing nonionic surfactant maltose laurate in an organic phase catalyzed by a lipase, and belongs to the technical field of food biochemical industry. Background technique [0002] Maltose fatty acid esters are edible surfactants with special properties formed by the condensation of maltose and fatty acids. Since maltose fatty acid esters have good emulsifying, thickening and puffing properties, they can be widely used in the food industry, cosmetics industry and washing industry. In recent years, some foreign researchers have gradually increased the research on the enzymatic synthesis of maltose fatty acid esters and their application in food. [0003] In my country, there is no report on the enzymatic synthesis of maltose fatty acid esters in the organic phase, but there are some reports on the enzymatic synthesis of other sugar esters. Zhang Nianxiang et al. reported in 1996 that lipase catalyzed t...

Claims

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Application Information

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IPC IPC(8): C12P19/00
Inventor 冯骉张晓鸣贾承胜高旭刘巧瑜张文斌
Owner JIANGNAN UNIV
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