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Method for rapidly identifying brown sugar and brown granulated sugar in sugarcane juice based on characteristic aroma substance GC-IMS fingerprint spectrum

A GC-IMS and sugarcane raw juice technology, applied in the field of sucrose product identification, can solve the problems of complex and unintuitive interpretation of identification results, lack of effective and accurate indicators, complicated identification operation, etc., achieve good promotion and application value, short sample detection time, The effect of high application value

Pending Publication Date: 2022-03-18
SUGARCANE RES INST OF YUNNAN ACADEMY OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This application provides a method for rapid identification of sugarcane raw juice brown sugar and brown sugar based on GC-IMS fingerprints of characteristic aroma substances, which is used to solve the complex identification operation of sugarcane raw juice brown sugar and brown sugar in the prior art, and the interpretation of identification results Complicated, unintuitive or difficult to distinguish, lack of effective and accurate indicators when using GC-MS to identify sugarcane raw juice brown sugar and brown granulated sugar

Method used

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  • Method for rapidly identifying brown sugar and brown granulated sugar in sugarcane juice based on characteristic aroma substance GC-IMS fingerprint spectrum
  • Method for rapidly identifying brown sugar and brown granulated sugar in sugarcane juice based on characteristic aroma substance GC-IMS fingerprint spectrum
  • Method for rapidly identifying brown sugar and brown granulated sugar in sugarcane juice based on characteristic aroma substance GC-IMS fingerprint spectrum

Examples

Experimental program
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Effect test

Embodiment 1

[0046] A method for rapid identification of sugarcane raw juice brown sugar and brown granulated sugar based on GC-IMS fingerprints of characteristic aroma substances, the steps include the following:

[0047] S1. Experimental materials: brown sugar from sugarcane juice from Kaiyuan Diancane Garden (H1), brown sugar from sugarcane juice from Yungeng crops (H2), brown sugar from Fuledan sugarcane juice (H3), brown sugar from Taikoo (C1), Shanghai jade Tang granulated sugar (C2), Jinyishen granulated sugar (C3).

[0048] S2. Experimental method: Accurately weigh 3 g of the test sample and place it in a 20 mL headspace bottle.

[0049] The headspace sampling conditions were as follows: injection needle temperature 85°C; injection volume 500uL; incubation time 15min; incubation temperature 60°C. The gas chromatography conditions are: chromatographic column type is MXT-5, column length is 15m, inner diameter is 0.53mm, film thickness is 1μm; column temperature is 60°C, IMS tempera...

Embodiment 2

[0061] The difference from Example 1 is that the headspace sampling conditions in step (2) are as follows: the sample is incubated at 50°C for 20 minutes, the incubation speed is 400r / min; the temperature of the injection needle is 80°C, and the injection volume is 400 μL.

[0062] The gas chromatographic conditions of step (2): the gas chromatographic column is a 5% diphenyl / 95% dimethyl polysiloxane column, the column temperature is 70 ° C, and the carrier gas / drift gas is N 2 , ion mobility spectrometry (IMS) temperature 40°C, drift gas 200mL / min, carrier gas flow initially 2mL / min, after holding for 2 minutes, increase to 90mL / min within 20 minutes, detection time is 15min.

Embodiment 3

[0064] The difference from Example 1 is that the headspace sampling conditions in step (2) are as follows: the sample is incubated at 70°C for 10 minutes, the incubation speed is 600r / min; the temperature of the injection needle is 90°C, and the injection volume is 600 μL.

[0065] The gas chromatographic conditions of step (2): the gas chromatographic column is a 5% diphenyl / 95% dimethylpolysiloxane column, the column temperature is 50° C., and the carrier gas / drift gas is N 2 , ion mobility spectrometry (IMS) temperature 50°C, drift gas 100mL / min, carrier gas flow initially 1mL / min, after holding for 2 minutes, increase to 100mL / min within 20 minutes, detection time is 20min.

[0066] The results obtained in Examples 2-3 are similar to those in Example 1, please refer to the results obtained in Example 1 for details.

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Abstract

The invention discloses a method for rapidly identifying brown sugar and brown granulated sugar in sugarcane juice based on a characteristic aroma substance GC-IMS fingerprint spectrum. The method comprises the following steps: (1) weighing 1-5g of a to-be-detected sample, putting the to-be-detected sample into a headspace sample injection bottle, and sealing the headspace sample injection bottle; (2) detecting the substance composition and peak intensity of the volatile components of the sample on GC-IMS by using a headspace sampling method; (3) performing qualitative analysis on the substances by using an NIST database and an IMS database built in GC-IMS Library Search software to obtain substance composition and peak intensity thereof, and establishing a fingerprint spectrum according to data of relative ion peak intensity of each substance; and (4) extracting the characteristic region of the fingerprint spectrum of the sample according to the difference of peak intensity signals or colors of the characteristic substances in the fingerprint spectrum. The method has the advantages of simple operation, low cost, short sample detection time, no need of complex sample pretreatment, and high application value.

Description

technical field [0001] The application relates to the technical field of identification of sucrose products, in particular to a rapid identification method of brown sugar and brown sugar from sugarcane juice based on GC-IMS fingerprints of characteristic aroma substances. Background technique [0002] Sugarcane raw juice brown sugar is a traditional food with unique flavor, aroma and health benefits. It is a product obtained from sugarcane as a raw material, squeezed, clarified, evaporated, and concentrated without honey, so it is also called non-honey. Divide honey. Brown sugar from sugarcane juice retains most of the nutritional and active ingredients in sugarcane juice, such as amino acids, polyphenols, minerals, and vitamins. It has health functions such as nourishing blood, enhancing immunity, protecting cells, and resisting oxidation. It is a traditional folk health food in my country. Popular with consumers. In recent years, with the continuous improvement of living ...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/86
CPCG01N30/02G01N30/06G01N30/8679
Inventor 杨婷沈石妍王智能杨柳应雄美武晋宇尚试雄崔杰
Owner SUGARCANE RES INST OF YUNNAN ACADEMY OF AGRI SCI
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