Preparation of an electrolytic solution and use thereof for electrochemically detecting content of sanshool quickly

A technology of peppercorn and electrolytic solution, applied in the direction of material electrochemical variables, etc., can solve the problems of mixed solution turbidity, large background interference, poor conductivity, etc., and achieve the effect of low cost, high measurement accuracy and convenient on-line detection

Active Publication Date: 2019-11-26
JIANGSU UNIV
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Problems solved by technology

[0005] In order to overcome the defects of the existing electrolytic solution formulas in the detection of the pepperanthin content in oily seasonings, such as turbidity, layering, poor conductivity, and large background interference, the present invention provides a method for the detection of pepperianin in oily seasoning A formulation of an electrolytic solution that can form a uniform and stable mixed solution with an oil-containing mixture and has good electrical conductivity

Method used

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  • Preparation of an electrolytic solution and use thereof for electrochemically detecting content of sanshool quickly
  • Preparation of an electrolytic solution and use thereof for electrochemically detecting content of sanshool quickly
  • Preparation of an electrolytic solution and use thereof for electrochemically detecting content of sanshool quickly

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Embodiment 1

[0043] (1) The preparation of the electrolytic solution consists of the following components: a polar solvent and a supporting electrolyte; the polar solvent is selected from 1,4-dioxane, and the supporting electrolyte is selected from PBS solution with a concentration of 0.1M; wherein 1, The volume ratio of 4-dioxane and PBS solution is 2:7, 3:6, 4:5, 5:4 and 6:3 respectively; the volume ratio of 1,4-dioxane and PBS solution is The abscissa and the corresponding peak current are taken as the ordinate to obtain the optimization result diagram of the electrolytic solution formula, such as figure 1 ,from figure 1 It can be seen that when the volume ratio of 1,4-dioxane and PBS solution is 5:4, the corresponding peak current is the highest, which is the optimal electrolytic solution formula;

[0044] (2) Preparation of Xanthanin mother liquor:

[0045] Accurately weigh samples of Zanthoxylum bungeanum oil and chafing dish bottom material, with a mass (w) of 50 g, and add them t...

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Abstract

The invention, which belongs to the technical field of detection in food, particularly relates to preparation of an electrolytic solution and the use thereof for electrochemically detecting the content of sanshool quickly. The method comprises: providing an electrolytic solution containing a polar solvent and a supporting electrolyte; extracting a sanshool mother solution of a sample, carrying outdilution by using the electrolytic solution to obtain a to-be-tested solution, and adding an alpha-SOH standard solution to obtain a mixed solution; preparing an equal-concentration equal-volume to-be-tested solution again and adding two-times-volume alpha-SOH standard solution to obtain a mixed solution; repeating the process by multiple times and then detecting differential pulse voltammetry curves of sanshool substances in the mixed solution respectively by using a three-electrode system; and calculating the content of sanshool by combining a formula. The electrolytic solution has conductivity and no background interference exists during detection. The electrolytic solution has advantages of fast detection, high sensitivity, simpleness, high measurement accuracy, short time required for sample analysis, low cost, and great convenience in on-line detection and the like in the specific detection process.

Description

technical field [0001] The invention belongs to the technical field of detection in food, and in particular relates to the preparation of an electrolytic solution and its use for electrochemical rapid detection of the content of xanthanin. Background technique [0002] Zanthoxylum bungeanum is a traditional condiment in my country. It is used directly or made into condiments such as pepper powder and pepper oil in the cooking process. Among them, Zanthoxylum bungeanum oil refers to the blended oil with fragrant and numb flavor obtained by soaking Zanthoxylum bungeanum in heated edible oil. Because of its convenience and strong numbness, it is widely used in Sichuan cuisine and cold dishes. In addition, the application of Zanthoxylum bungeanum in hot pot is also very common. The hot pot base is a compound condiment with rich ingredients and high oil content. In addition to pepper and pepper, ginger, garlic, star anise and other ingredients are often added during the frying p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/28G01N27/48
CPCG01N27/28G01N27/48
Inventor 邹小波孙晓霞赵镭张迪史波林
Owner JIANGSU UNIV
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