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A kind of method that prepares series sucrose ester in green solvent

A green solvent and sucrose ester technology, applied in the field of sucrose ester manufacturing, can solve the problems of food safety hazards, toxic residues, environmental pollution, etc., and achieve the effects of excellent antibacterial properties, prevention of caramelization, and high economic value

Active Publication Date: 2022-06-28
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of solvents can greatly improve the reaction efficiency and increase the content of monoester in the product, but these organic solvents are toxic solvents with polarity and high melting point, which easily lead to problems such as toxic residues and environmental pollution
At the same time, the resulting products need to be further refined and purified, otherwise direct application to food may lead to hidden dangers in food safety

Method used

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  • A kind of method that prepares series sucrose ester in green solvent
  • A kind of method that prepares series sucrose ester in green solvent
  • A kind of method that prepares series sucrose ester in green solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing a series of sucrose esters in a green solvent is carried out according to the following steps:

[0046] Step S1: put 1Kg of sucrose in a container, add 3.8L of dihydro-levoglucone solvent, and stir at 60-65°C for 45min;

[0047] Step S2: add the ZnTAC of 0.58Kg technical grade methyl stearate, 0.01Kg potassium carbonate, 5g to the container 24 , get the mixture;

[0048] Step S3: the container is connected to the constant temperature circulation pipeline, and the mixture is circulated and mixed, the pressure in the constant temperature cycle pipeline is 10kPa, the flow rate is 65mL / min, and the mixture is under the action of the constant temperature cycle pipeline. The circulation flows through the constant temperature circulator, the pulsed electric field, the condenser and the container, and the mixture undergoes transesterification in the constant temperature circulation pipeline. The pipeline between the container and the electric field cham...

Embodiment 2

[0060] A method for preparing a series of sucrose esters in a green solvent is carried out according to the following steps:

[0061] Step S1: put 1Kg of sucrose in a container, add 3.5L of dihydro-levoglucone solvent, and stir at 60-65°C for 45min;

[0062] Step S2: add 0.87Kg technical grade methyl stearate, 0.01Kg potassium carbonate, 3g CaO γ-Fe to the container 2 O 3 , get the mixture;

[0063]Step S3: connect the container to the constant temperature circulation pipeline to make the mixture circulate and flow and mix, the pressure in the constant temperature circulation pipeline is 8kPa, the flow rate is 58mL / min, and the mixture circulates under the action of the constant temperature circulation pipeline Flowing through a constant temperature circulator, a pulsed electric field, a condenser and the container, the mixture undergoes a transesterification reaction in the constant temperature circulation pipeline, and the constant temperature circulation pipeline includes...

Embodiment 3

[0075] This example is the same as the operation steps in Example 1, but focuses on verifying the feasibility of recycling by-products and solvents, and the specific differences are as follows:

[0076] (1) methyl stearate used in step S2 comes from the methanol collected in step S3 of Example 1 carried out several times, and is prepared by catalyzed esterification with stearic acid by sulfuric acid; the dihydro-levoglucone solvent used is derived from The recovered dihydro-levoglucosone solvent of step S4 of embodiment 1; ZnTAC used 24 It is derived from the solid catalyst recovered in step S3 of Example 1.

[0077] (2) The organic solvent used in step S5 comes from the ethanol recovered from the organic phase recovery of step S5 in Example 1.

[0078] According to the method for product quality inspection in Example 1, various quality indicators of the obtained sucrose ester products 5 and 6 are detected, and each index of the series of sucrose ester products 5 and 6 and th...

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Abstract

The invention relates to a method for preparing a series of sucrose esters with different monoester contents in a green solvent. Firstly, sucrose and dihydro-L-glucosone solvent are heated and stirred; The mixed material circulates through the constant temperature circulator, pulse electric field, condenser and the container. The mixed material undergoes transesterification reaction during the constant temperature circulation flow process, and the condenser removes the lower alcohol generated during the reaction process. After circulation, it is filtered for the first vacuum distillation Dihydro-L-glucosone is recovered, and the crude product is placed in a Soxhlet extractor for segmental extraction to obtain a series of sucrose ester products. The present invention uses the green solvent dihydro-L-glucosone solvent to replace traditional organic solvents such as toxic DMF and DMSO, which greatly improves production and product safety; at the same time, the Soxhlet extraction process realizes the production of sucrose ester series products with different monoester contents. Efficient and continuous purification, all solvents used can be recovered, recycled, and environmentally friendly.

Description

technical field [0001] The invention relates to the field of sucrose ester manufacture, in particular to a method for preparing a series of sucrose esters in a green solvent. Background technique [0002] Sucrose fatty acid ester is often abbreviated as sucrose ester. Its molecule contains both a hydrophilic sucrose part and a lipophilic (hydrophobic) fatty acid chain part, so it is an amphiphilic molecule and is an excellent surfactant. Sucrose ester has the advantages of green environmental protection, non-toxic, non-irritating and biodegradable; and its hydrophilic and lipophilic properties can be adjusted by the length of its fatty acid side chain and the degree of esterification, so sucrose ester has a wide range of hydrophilic properties. Lipophilic Balance (HLB). In the past fifty years, sucrose esters have been widely used in food, cosmetics, detergents, medicine, agriculture and other fields. Generally speaking, sucrose fatty acid monoesters have more desirable pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H13/06C07H1/00C07H1/06A01N43/16A01P1/00A23L2/52A23L2/44A23G3/42A21D2/18A21D15/00A23L29/00A23L29/30A23L3/3562A23L13/40A23B4/20A23B7/154A61K8/60A61Q1/06A61Q5/02A61Q17/00A61Q19/00
CPCC07H13/06C07H1/00C07H1/06A01N43/16A23L2/52A23L2/44A23G3/42A21D2/18A21D15/00A23L29/04A23L29/30A23L3/3562A23L13/42A23B4/20A23B7/154A61K8/60A61Q5/02A61Q19/00A61Q1/06A61Q17/005A23V2002/00A23V2200/10
Inventor 蓝平滕英来马亚茹
Owner JINAN UNIVERSITY
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