What is preservative

Introduction: many people don't know much about preservatives, so what are preservatives? Through the safety net of Baibai for detailed understanding We often see a lot of sealed food in the supermarket, including meat, sausage and canned products Actually, preservatives are added in the processing of these food Otherwise, these food can not be kept fresh for a long time Many people want to know what preservatives are Next, we will introduce these food safety knowledge in detail through the safety net of Baibai Preservative is a kind of important food additive This paper introduces the research progress of common organic acids, organic small molecules and peptide preservatives, and explains the reason of microbial adaptability The food is rich in nutrition and easy to be polluted by microorganism In order to ensure the safety of food, people use many methods to preserve food, such as salting, canning, refrigeration and so on However, under certain conditions, the use of preservatives as an auxiliary means of preservation has a significant effect on preventing food corruption Therefore, preservatives are widely used in the food industry as one of the important food additives According to the main properties of antiseptic, it can be roughly divided into bactericide with bactericidal effect and bacteriostatic only with bacteriostatic effect Sterilization or bacteriostasis, there is no absolute limit, often difficult to distinguish For the same substance, when the concentration is high, it can be sterilized, while when the concentration is low, it can only be bacteriostatic, when the action time is long, it can be sterilized, and when the action time is short, it can only be bacteriostatic In addition, due to the different properties of various microorganisms, the same substance has bactericidal effect on one microorganism, while it may only have bacteriostatic effect on another microorganism So it's necessary to know more about preservatives After all, we all need to eat these foods in our life If you want to know about the hazards of food preservatives and other related problems, you can go to Baibai safety net to find out the answer There is also an instrument called food safety detector to measure the excessive preservatives Editor in charge: he xianrob