Detecting method, detecting test piece and detector for redox materials in food

A detection method and detector technology, applied in the direction of material electrochemical variables, etc., can solve problems such as expensive machines, and achieve the effect of ensuring safety

Active Publication Date: 2011-07-20
APEX BIOTECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Flow injection analysis precise Requires large, expensive machines, performed in a laboratory
Ion exchange chromatography precise Requires large, expensive machines, performed in a laboratory
High performance liquid chromatography precise Requires large, expensive machines, performed in a laboratory
Gas chromatography precise Requires large, expensive machines, performed in a laboratory

Method used

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  • Detecting method, detecting test piece and detector for redox materials in food
  • Detecting method, detecting test piece and detector for redox materials in food
  • Detecting method, detecting test piece and detector for redox materials in food

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Embodiment Construction

[0023] The invention is a method and a device for qualitatively and quantitatively analyzing residual redox substances in food by using a redox reaction in conjunction with a detection test piece and a detection instrument. The invention can be used to test reducing substances in food (when using oxidizing dielectric): sulfur dioxide, sulfite, vitamin C, formaldehyde, Rongalite, phenols, and can also test oxidizing substances (When using a reducing dielectric): hydrogen peroxide, manganese oxides, chromium oxides, chlorine gas, chlorine oxides and other natural or artificially added, synthetic redox substances or their derivatives. Because the food additives with reduction and bleaching ability are based on sulfur dioxide / sulfite, the following descriptions are based on sulfur dioxide / sulfite as the main illustrative example. However, the above-mentioned other analytes, due to their The detection principle, test piece structure and detection equipment are all the same, so only...

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Abstract

The invention relates to a detection method for redox materials in food, which is used for detecting the quantitative concentration of the residue redox materials in food in a short time. The method is implemented by a detecting test piece and a detector, and comprises the following steps: pretreating a proper amount of a food test sample, preparing a certain amount of the preteated food test sample, and dissolving the pretreated food test sample in buffer solution; subjecting the buffer solution containing materials to be detected and the formula layer of the detecting test piece to a redox reaction; the detector provides a reaction level to the reaction electrode of the test piece to acquire an electrical signal; and the content of the materials to be detected in the food test sample can be acquired by the electrical signal. The invention also provides the detecting test piece and the detector, which are applicable to the detection method.

Description

technical field [0001] The present invention relates to a method for detecting redox substances in food, especially a method capable of quantitatively detecting residual redox substances in food; the present invention also relates to a detection test piece and a detection instrument for achieving the above method. Background technique [0002] Sulfur dioxide and sulfite are common residual food additives in daily life. Among them, sulfur dioxide is a reducing bleaching agent, which has the functions of bleaching, decolorization, anti-oxidation, antisepsis and disinfection, so it is often added to food to inhibit the growth of microorganisms such as yeast, mold and bacteria to preserve food. Sulfites are also common food additives. Since sulfites are decomposed into sulfur dioxide immediately after action, they have the same purpose as sulfur dioxide. [0003] In addition to sulfur dioxide, common sulfite additives in food include: Sodium sulfite (Na 2 SO 3 ), potassium su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N27/48
Inventor 沈燕元林修民陈择铭
Owner APEX BIOTECH
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