Preservatives can be divided into chemical preservatives and natural preservatives depending on the source. Natural preservatives, also known as natural organic preservatives, are substances that are secreted by organisms or have antibacterial activity in the body, and are artificially extracted or processed to become food preservatives. Chemical preservatives are further divided into organic preservatives and inorganic preservatives.
In practical applications, natural preservatives are more environmentally safe. Such preservative products are generally extracted from animal, plant and microbial metabolites, such as nisin. Moreover, the source of microbial natural preservatives is very wide, and bacteria, anti-bacteria, yeast, and mold can produce antibacterial substances during growth and reproduction.
Of course, there are many chemical preservatives currently on the market, such as benzoic acid and its sodium salt, sorbic acid and its potassium salt, propionic acid and its salts, parabens (parabens), dehydroacetic acid. And its sodium salt, sodium lactate and the like. However, it is believed that in the near future, with the advancement of science and technology, the production cost of natural preservatives will be reduced and widely used.www.china-zhufengchem.com