Precautions For Food Additives

(1) The role of food additives
Reasonable use of food additives can prevent food spoilage, maintain or enhance the nutrition of food, and improve or enrich the color, aroma, taste, etc. of food.
(2) The necessity of using food additives
In fact, not using preservatives carries greater danger because spoiled food often causes food poisoning. In addition, preservatives can not only prevent food spoilage, but also kill toxin producing microorganisms such as Aspergillus, which is undoubtedly beneficial to human health.
(3) Safe dosage of food additives
The dosage of food additives that have no toxic effects or adverse effects on health is expressed in milligrams per kilogram of daily intake
GB 2760-2011 National Food Safety Standard for the Use of Food Additives.
(4) Do not use toxic additives
For example, "hanging white block" is formaldehyde sodium bisulfite, also known as hanging white powder hanging white block, with the chemical formula NaHSO2 · CH2O · 2H2O.
Produced by reacting zinc powder with sulfur dioxide to produce low sulfite, etc., and then reacting with formaldehyde, concentrated in a vacuum evaporator and condensed into blocks.
The "hanging white block" appears as a white block or crystalline powder, soluble in water. It is relatively stable at room temperature and can decompose sulfurous acid at high temperatures. It has strong reducibility and therefore has a bleaching effect.