What is bleach

Bleach is a kind of additive which can destroy or restrain the forming factors of food color, make its color fade or avoid food browning. If the production of preserved China food Ingredient supplier , starch syrup and other products such as bleaching treatment.

There are many kinds of bleaching agents, but in view of the safety of food and its own particularity, there are not many kinds of bleaching agents which are really suitable to be used in food. The prototype bleach and oxidizing bleach are separated according to their action mechanism China food flavour supplier . Reduced bleaching agents are widely used in the processing of fruits and vegetables, mainly through the reduction of sulfur dioxide to decompose or fade the pigment components in fruits and vegetables. Its effect is relatively mild, but once the bleached pigment is oxidized, it may reappear. All the reduced bleaching agents listed in National food standard are mainly sulfite preparations China food flavour wholesale , such as sodium sulfite, low sodium sulfite (insurance powder), sodium pyrosulfite or potassium salt China food flavour wholesale , sodium bisulfite and sulfur, etc. Oxidizing bleaching agent destroys coloring substances or chromogenic groups through its own oxidation, so as to achieve the purpose of bleaching. Except for a few varieties such as azoformamide as flour treatment agent, oxidizing bleach is rarely used in practice.

Whether reduced bleach or oxidizing bleach, in addition to improving the color of food China food Ingredient supplier , some bleaching agents can also passivate the activity of biological enzymes and inhibit the reproduction of microorganisms China food flavour supplier , which can play a role in controlling enzymatic browning and bacteriostasis.