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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: 2009-04-15
JIANGNAN UNIV
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  • Summary
  • 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, the solubility of substrate maltose in reaction system acetone is only 0.59mmol / L, the reaction rate is relatively slow, and need to add molecular sieve as dehydrating agent in the reaction, and because the product accumulates in the reactor thus Inhibit the progress of the reaction
Therefore, batch production is not suitable for large-scale industrial production

Method used

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

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Experimental program
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Effect test

Embodiment 1

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

[0036] Table 1

[0037]

Embodiment 2

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

[0040] Table 2

[0041]

Embodiment 3

[0043] The concentration of maltose added in the reactor at the beginning of the reaction is 100mmol / L, 250ml of 300mmol / L lauric acid acetone solution, 60g / L lipase, and then the reaction adds 16g / L maltose every day, and the lauric acid acetone solution of 300mmol / L is added at 0.15 The flow rate of ml / min enters the reactor and reacts for 10d. The yield and the amount of product obtained after separation and purification are shown in Table 3.

[0044] table 3

[0045]

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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 by lipase catalysis in an organic phase, and belongs to the technical field of food biochemical industry. Background technique [0002] Maltose fatty acid ester is a kind of edible surfactant with special properties formed by condensation of maltose and fatty acid. Because maltose fatty acid ester has good emulsification, thickening and puffing properties, it can be widely used in food industry, cosmetic industry and washing industry. In recent years, some foreign researchers have gradually increased their 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 catalyz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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