Method for detecting amaranth in food using porous graphene

A technology of porous graphene and amaranth is applied in the direction of measuring devices, instruments, electrochemical variables of materials, etc., to achieve the effects of good detection effect, low detection limit and uniform pores

Active Publication Date: 2019-06-28
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to arouse consumers' desire to consume and increase huge profits, unscrupulous traders often add excessive amounts of amaranth to their products

Method used

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  • Method for detecting amaranth in food using porous graphene
  • Method for detecting amaranth in food using porous graphene
  • Method for detecting amaranth in food using porous graphene

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Experimental program
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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described below.

[0020] A method utilizing porous graphene to detect amaranth in food, comprising the steps:

[0021] (1) Preparation of porous graphene

[0022] Dissolve a certain amount of nickel(II) nitrate powder in 15mL deionized water, and then dissolve 10mL with a concentration of 4mg·mL under stirring conditions -1 The graphite oxide (GO) solution was added to the nickel nitrate solution above. Control the mass ratio of GO to Ni element to be 10:1. After the above mixed solution was sonicated for 10 min, the mixed solution was quickly transferred into a freeze dryer, vacuum-frozen with liquid nitrogen at a temperature below 0 °C for 48 h, and then the obtained powder was heated in a tube furnace at a rate of 10 °C / min. Heating from room temperature to 800 °C, and keeping it in a flowing Ar atmosphere for 1 h, a black solid powder was obtained. Finally, the obtained black powder w...

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Abstract

The invention relates to a method for detecting amaranth in food by using porous graphene, belonging to the field of analytical chemistry or food safety. According to the invention, porous graphene is prepared by using a metal etching method; dispersion liquid of porous graphene is dispensed on the surface of a glassy carbon electrode so as to prepare a porous graphene modified glassy carbon electrode; and since porous graphene has a large specific surface area, high conductivity, strong adsorption capability and good mass transfer effect, the porous graphene modified glassy carbon electrode is used for detecting amaranth in food in experiments. The detection method provided by the invention has the advantages of high sensitivity, low detection limit, easiness and accurate results.

Description

technical field [0001] The invention relates to the field of electrochemical analysis and testing technology or food safety, in particular to a method for detecting amaranth in food by electrochemical means using porous graphene prepared by a metal etching method as an electrode modification material. Background technique [0002] The development of electrochemical detection of food additives, drugs, and biomolecules has led to the rapid emergence of a series of biosensors, food sensors, and environmental sensors. Due to its high sensitivity, low price, simple operation and easy miniaturization, electrochemical detection technology has been successfully applied in protein analysis, biological monitoring, drug analysis, and food analysis and other fields. In order to arouse everyone's appetite, pigments such as amaranth are often added to desserts, candies, drinks and other foods. According to the provisions of the Food Hygiene Organization (FAO) and the World Health Organiz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/48G01N27/30
CPCG01N27/308G01N27/48
Inventor 王美玲曹海亮崔明珠赵敏韩丹
Owner TAIYUAN UNIV OF TECH
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