Method for quickly measuring pigment and preservative in jelly
A technology for rapid determination and preservatives, which can be used in measuring devices, instruments, scientific instruments, etc., and can solve the problems of high operation intensity, low analysis efficiency and high analysis cost.
Inactive Publication Date: 2015-03-25
GUANGXI UNIVERSITY OF TECHNOLOGY
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[0003] The purpose of the present invention is to provide a method for rapid determination of pigments and preservatives in jelly, aiming to solve the problems of low analysis efficiency, high operation intensity and high analysis cost of pigments and preservatives in jelly
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0036] A method for rapid determination of pigments and preservatives in jelly, such as figure 1 shown, including the following specific steps:
[0037] S1. Collect jelly samples and multi-wavelength chromatographic data of components to be tested.
[0038] In step S1, the components to be tested are tartrazine, sunset yellow and potassium sorbate solutions, and the jelly sample contains tartrazine, sunset yellow and potassium sorbate.
[0039] More specifically, step S1 includes the following steps:
[0040] S1A, processing of samples to be tested:
[0041]Processing of jelly samples: Weigh a ...
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The invention provides a method for quickly measuring pigment and preservative in jelly. The method comprises the following steps: freezing the jelly and then extracting jelly samples, acquiring the known components to be measured and multi-wavelength chromatographic data of the jelly samples containing the components to be measured; deducting data having the same peak appearance retention time with the components to be measured in the chromatographic data of the jelly samples; combining the chromatographic data deducting the components to be measured of the jelly samples to obtain a background spectral database without the components to be measured and calculating the number of main components; performing dimensionality reduction on the background spectral database by combining singular value decomposition with the number of the main components to obtain a background database with smaller data volume; calculating the content of the components to be measured in the jelly samples by using the spatial angle criteria, so that the quantification of the components to be measured in the jelly samples is realized. The method disclosed by the invention has the advantages of high analysis efficiency, low operation strength, low analysis cost, excellent robustness and simplicity; the machine hour can be shortened and reagent loss can be reduced; the method is very suitable for quickly analyzing and measuring the same large-batch samples.
Description
technical field [0001] The invention belongs to the field of methods for determining the content of pigments and preservatives, and in particular relates to a method for rapidly determining the content of pigments and preservatives in jelly. Background technique [0002] The most commonly used colorings in jellies include tartrazine and sunset yellow, and the most commonly used preservative is potassium sorbate. At present, the main methods for the detection and analysis of these pigments and preservatives are chromatographic methods, including thin-layer chromatography, high-performance liquid chromatography (HPLC), high-performance liquid chromatography-mass spectrometry, and capillary electrophoresis. High-performance liquid chromatography is currently the most widely used method, which has the advantages of easy operation and high sensitivity. However, the main limitation of using chromatographic methods is the separation time. For example, the separation time of a sampl...
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IPC IPC(8): G01N30/88
Inventor 粟晖刘柳姚志湘陈成马贵辉
Owner GUANGXI UNIVERSITY OF TECHNOLOGY