Analysis method of fructose content in glucose isomerization process and application thereof

An analysis method and isomerization technology, applied in the field of glucose isomerization process analysis, can solve the problems of high modeling cost and large modeling sample size, and achieve the effects of low modeling cost, convenient operation, and convenient quality monitoring.

Pending Publication Date: 2020-12-29
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a large number of modeling samples and high modeling costs, and the accuracy of model prediction is determined by the distribution of modeling samples

Method used

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  • Analysis method of fructose content in glucose isomerization process and application thereof
  • Analysis method of fructose content in glucose isomerization process and application thereof
  • Analysis method of fructose content in glucose isomerization process and application thereof

Examples

Experimental program
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Embodiment 1

[0044] This embodiment provides a method for analyzing fructose content in the glucose isomerization process, comprising the following steps:

[0045] Step 1, establish a rapid analysis model of fructose content in the process of glucose isomerization:

[0046] Described rapid analysis model is the association equation of fructose content and angle value variance value, establishes by the following steps:

[0047] Step 1), glucose isomerization: add glucose isomerase at a dosage ratio of 7.5 mg per gram of glucose syrup to glucose syrup with a mass fraction of 45% at pH = 6 and a temperature of 55° C., and the reaction time is 24 hours to obtain The reaction solution.

[0048] Step 2), the mass fraction of fructose in the reaction solution obtained by resorcinol-spectrophotometry is 8.94%, and this is used as the base liquid, and fructose (AR) solution is added to prepare 8 glucose samples numbered S1 to S8. Syrup samples, so that the fructose content interval of each sample...

Embodiment 2

[0064] This example provides an analysis method for the fructose content in the glucose isomerization process. The only difference between this example and Example 1 is:

[0065] In this embodiment, the mass fraction of glucose syrup is 40%, pH=7, temperature 50° C., and the amount of glucose isomerase added is 5 mg per gram of glucose syrup.

[0066] In this example, glucose syrup samples were prepared with 30% glucose solution by mass fraction, the fructose content of each sample was separated by 4%, and the number of samples was 87. The fructose mass fraction in No. 1 glucose syrup sample was 4.0%, and the other samples increased in turn 4%.

[0067] In this embodiment, the reference sample is sample No. 7 with a fructose mass fraction of 28%.

[0068] The Raman spectrum acquisition parameters must be consistent with Example 1 and keep the light source stable. The absolute error of the fructose content in the reaction solution obtained by the method of this example and the...

Embodiment 3

[0071] This example provides an analysis method for the fructose content in the glucose isomerization process. The only difference between this example and Example 1 is:

[0072] In this embodiment, the mass fraction of glucose syrup is 55%, pH=9, temperature 65° C., and the amount of glucose isomerase added is 12.5 mg per gram of glucose syrup.

[0073] In this embodiment, the fructose content of each sample is separated by 5%, and the number of samples is 7. The mass fraction of fructose in No. 1 glucose syrup sample is 1.0%, and the other samples are increased by 5%.

[0074] In this embodiment, the reference sample is sample No. 7 with a fructose mass fraction of 35%.

[0075] The Raman spectrum collection parameters must be consistent with Example 1 and keep the light source stable. The absolute error of the fructose content in the reaction solution obtained by the method of this example and the resorcinol-spectrophotometric method is between 0.04‰~1.09%. The relative er...

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Abstract

The invention discloses an analysis method of fructose content in a glucose isomerization process and application thereof. The analysis method is realized through the following technical scheme of step 1, establishing a rapid analysis model of fructose content in the glucose isomerization process; step 2, collecting a Raman spectrum of a to-be-detected sample; step 3, calculating a series of included angle values between the Raman spectrum of the to-be-detected sample and a reference sample spectrum used in the rapid analysis model, and solving a variance value D of the series of included angle values; and step 4, substituting the numerical value of the variance value D into the rapid analysis model in the step 1 to obtain the fructose content of the to-be-detected sample. The invention also discloses the application of the method in monitoring the glucose isomerization process. According to the method, the Raman spectrum rapid analysis model of the fructose content in the glucose syrup isomerization process is established and applied to analysis of the glucose syrup isomerization process, each standard measurement step is not needed, and the method is suitable for field and process continuous measurement and facilitates quality monitoring of products in the production process.

Description

technical field [0001] The invention relates to the technical field of glucose isomerization process analysis, in particular to an analysis method and application of fructose content in the glucose isomerization process. Background technique [0002] At present, the quantitative analysis methods of fructose mainly include high performance liquid chromatography, gas chromatography, spectrophotometry and nuclear magnetic resonance methods. Most of them are mainly offline methods, which are limited in terms of analysis efficiency and convenience, and cannot meet the requirements of real-time analysis of glucose isomerization process. [0003] Raman / near-infrared spectroscopy has the advantages of fast measurement speed, simple sample preparation, no consumption of chemical reagents, easy operation, low cost, and no pollution. Near-infrared spectroscopy is used to analyze the fructose content of the system, mostly by using the partial least square method and combining different...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65G01N21/64
CPCG01N21/65G01N21/6428
Inventor 粟晖焦天伟张万元张开翼陈炎姚志湘
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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