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Method for determining caprylin and caprin in cigarette blasting bead

A technology of glyceryl caprate and glyceryl tricaprylate, which is applied in the field of chemical analysis and testing, can solve the problems of difficulty in obtaining and restricting the calibration of classical chromatographic analysis methods, and achieve simplification of calculation difficulty, easy operation of pretreatment methods, and good repeatability Effect

Inactive Publication Date: 2018-04-06
CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the analysis of relevant literature, it is found that caprylic and capric acid glycerides, as a kind of high-boiling medium-long-chain triglyceride (MLCT), are a mixture of various compounds, and the single-standard pure products of some components are currently not easy to obtain in the market. This restricts the calibration of classical chromatographic analysis methods, and eventually becomes the key difficulty in the accurate quantification of caprylic and capric glycerides

Method used

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  • Method for determining caprylin and caprin in cigarette blasting bead
  • Method for determining caprylin and caprin in cigarette blasting bead
  • Method for determining caprylin and caprin in cigarette blasting bead

Examples

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Effect test

Embodiment 1

[0058] The assay method of capric acid glyceride in the cigarette quick-fried pearl of the present embodiment, such as figure 1 shown, including the following steps:

[0059] 1. Preparation of test solution

[0060] Take a cigarette popping bead and weigh its mass (accurate to 0.1mg), put the popping bead on the bottom of the cut plastic straw such as figure 2 As shown, after crushing the pop-up beads, put them together with the straw into a 50mL stoppered centrifuge tube, add 10mL n-hexane and 100μL internal standard solution, vortex for 5min, and take the supernatant to obtain the test solution; the internal standard solution is 25mg / mL n-hexane solution of n-hexadecane;

[0061] 2. Preparation of standard working solution

[0062] Weigh 25mg (accurate to 0.1mg) tricaprylic acid glyceride in a 10mL volumetric flask, dissolve it with n-hexane and set the volume to the mark, and prepare a standard stock solution with a concentration of 2.5mg / mL; pipette 0.025mL, 0.5 mL, 1...

Embodiment 2

[0078] Caprylic, capric acid glyceride food additive is measured according to the assay method of embodiment 1, and the gas chromatogram that records is as follows Figure 4 as shown, Figure 4 The middle chromatographic peaks 3-9 are glyceryl dicaprylate, glyceryl monocaprylate, glyceryl dicaprate, glyceryl tricaprylate, glyceryl monocaprylate dicaprylate, glyceryl monocaprylate dicaprate, tricapric acid The chromatographic peak of glyceride, IS is the chromatographic peak of n-hexadecane, and monocaprylic acid glyceride and monocapric glyceride are not detected.

Embodiment 3

[0080] According to the assay method of Example 1, the content of caprylic and capric glycerides in samples 1-1, 1-2, and 1-3 of unknown cigarette quick-fried pearls is shown in Table 4, and the gas chromatogram of the 1-1 sample is shown in Table 4. Figure 5 As shown, wherein the chromatographic peaks 3-9 are successively glyceryl dicaprylate, glyceryl monocaprylate, glyceryl dicaprate, glyceryl tricaprylate, glyceryl monocaprate dicaprylate, glyceryl monocaprylate dicaprate, The chromatographic peak of glyceryl tricaprate, IS is the chromatographic peak of n-hexadecane, glyceryl monocaprylate and glyceryl monocaprate are not detected.

[0081] Table 4 Statistical results of actual samples

[0082]

[0083]

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Abstract

The invention relates to a method for determining caprylin and caprin in cigarette blasting bead, which belongs to the technical field of chemical analysis tests. The method comprises the following steps: 1) the blasted cigarette blasting bead is mixed with hexane and internal standard substance, a mixture is extracted, and a supernatant is taken for carrying out GC-FID determination; and 2) tricaprylin is taken as a standard substance, and the content of caprylin and caprin can be calculated through relative response factors of the caprylin and caprin on tricaprylin as well as a standard working curve of tricaprylin. The method realizes quantification without gradual making of the standard working curves of a to-be-analyzed object, the total content of all components in caprylin and caprin can be calculated by one standard working curve of tricaprylin, and calculating difficulty can be greatly simplified.

Description

technical field [0001] The invention relates to a method for measuring caprylic and capric acid glycerides in cigarette popcorn, belonging to the technical field of chemical analysis and testing. Background technique [0002] As an important quality index of cigarette popping beads, caprylic and capric acid glyceride (ODO) is the most commonly used typical solvent for the core material of cigarette popping beads. Caprylic and capric glycerides are approved to be used as food emulsifiers in GB 2760-2014 "National Food Safety Standard Food Additives Use Standard", CNS number is 10.018. According to the information provided by the domestic cigarette bead manufacturers, caprylic and capric acid glycerides currently account for 40% to 80% of the mass of cigarette bead. For filter rod industrial enterprises and cigarette industrial enterprises, the monitoring of caprylic and capric glyceride content is of great significance to the stability and quality evaluation of cigarette pop...

Claims

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Application Information

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IPC IPC(8): G01N30/06G01N30/68
CPCG01N30/06G01N30/68
Inventor 刘珊珊李中皓邓惠敏边照阳范子彦王颖杨飞柯玮唐纲岭
Owner CHINA NAT TOBACCO QUALITY SUPERVISION & TEST CENT
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