What is bleach

Introduction: many r people don't know what bleach is? I don't know how to use bleach Let's introduce the knowledge about bleach What is bleach? Bleach is a substance that destroys and restrains the color of food, makes it fade or prevents food from browning Some chemicals can achieve the function of bleach through oxidation reaction, and bleach some articles means to remove or lighten their color Commonly used chemical bleaching agents are usually divided into two categories: chlorine bleaching agents and oxygen bleaching agents In May 2013, the media revealed that Colgate and other toothpastes contain bleaching agent, and China oral cleaning and care products industry association questioned the test method Bleach is a kind of chemical substance It can achieve the function of bleach through oxidation reaction, and bleach is to remove or fade the color of some substances Commonly used chemical bleaching agents are usually divided into two categories: chlorine bleaching agents and oxygen bleaching agents Chlorine bleach contains sodium hypochlorite, while oxygen bleach contains hydrogen peroxide or some compounds that release peroxides, such as sodium perborate or sodium percarbonate The composition of bleaching powder is usually calcium hypochlorite Bleaching is also the initial step in the dyeing process Bleaching agent consumes oxygen in food through chemical action such as reduction, destroys and suppresses the activity of food oxidase and the color factors of food, so as to make food browning pigment fade or avoid browning, at the same time, it also has a certain antiseptic effect There are seven kinds of bleaching agents allowed in China, including sulfur dioxide, sodium sulfite and sulfur, among which sulfur is only limited to the fumigation of preserves, dried fruits, dried vegetables, vermicelli and sugar Many foods use bleach, so is it safe to bleach? In fact, if it is used according to the national regulations, it will not be dangerous Now the state has a food safety detector, which can quantitatively detect 50 parameters in the food on the spot So that we can eat more safe food, more food safety knowledge in the hundred safety net Editor in charge: he xianrob