Method for determining oxidizing and reducing substance e.g. sulfur dioxide in food, involves providing reaction potential to reaction electrode of analysis sample and obtaining content of analyzed substance from electrical signal

摘要

The method involves pre-treating a quantity of a food sample (a). A given quantity of the pretreated food sample is dissolved (b) in a buffer solution. The buffer solution dissolving an analyzed substance is provided (c) to react with a layer formulated on an analysis sample to carry out redox reaction. A reaction potential is provided (d) to a reaction electrode of the analysis sample by a measuring device to obtain an electrical signal. A content of the analyzed substance is obtained (e) from the electrical signal. Independent claims are also included for the following: (1) an analysis sample for implementation of a process for determination of oxidizing and reducing substances in food, comprising a substrate that is made of a material chosen from polyvinyl chloride, polyester, polyethylene terephthalate, polycarbonate, polypropylene, polyethylene, polybutylene, polystyrene, polyethylene-polyvinylidene fluoride, polyamide and Bakelite, a glass material , a glass fiber material and an aceramic material (2) a measurement device for implementation of the process for determination of oxidizing and reducing substances in a food, comprising a connection unit.