The main points for using preservatives include the following:
Ensuring Complete Product Sterilization
Before adding preservatives, the first step is to ensure the product has undergone thorough sterilization and is free of microorganisms. This is because the primary function of preservatives is to inhibit the growth and reproduction of microorganisms, not to kill them. If the microbial content in the product is too high, the addition of preservatives will not achieve the desired preservative effect.
Understanding the Toxicity and Usage Range of Preservatives
When using preservatives, it is essential to understand their toxicity and safe dosage. Each type of preservative has its specific usage range and safe dosage; exceeding this range may harm human health. Therefore, it is crucial to strictly adhere to the prescribed dosage to ensure food safety.
Consider the Applicable Environment of Preservatives
Acidic preservatives, such as potassium sorbate and sodium benzoate, only function effectively in acidic environments. If used in neutral or slightly alkaline environments, their preservative effect will be significantly reduced. Therefore, the pH value of the product must be considered when selecting and using preservatives.
Selecting Preservatives Based on Microbial Species
Different preservatives have varying inhibitory effects on different types of microorganisms. Some preservatives are effective against molds, while others are effective against yeasts. Therefore, when selecting preservatives, it is necessary to understand the most likely types of microorganisms present in the product in order to target the appropriate preservative and improve its effectiveness.
Comprehensive Consideration of Preservative Price and Solubility
When using preservatives, it is also necessary to consider their price, solubility, and impact on food flavor. By comprehensively considering these factors and combining them with the characteristics of the food processing technology, preservatives can be flexibly selected and used to achieve the best preservation effect and economic benefits.
