Food preservatives are substances added to food products to prevent spoilage caused by microorganisms, oxidation, and chemical reactions. They help in extending the shelf life of food items while maintaining their quality and safety.

Product Data
Common food preservatives include sodium benzoate, potassium sorbate, and sulfur dioxide. These preservatives can be found in various forms such as powders, liquids, or granules. The effectiveness of a preservative is influenced by factors such as concentration, pH level, and temperature during storage.

Reference Price
The price of food preservatives varies based on the type and quantity purchased. For example, sodium benzoate may cost around 3 to 5 USD per kilogram when bought in bulk, while potassium sorbate may range from 5 to 10 USD per kilogram.

Product Classification
Food preservatives can be classified into two categories: natural and synthetic. Natural preservatives include substances like vinegar and salt, while synthetic preservatives are chemically manufactured compounds.

Product Features
Food preservatives offer several key features. They effectively inhibit the growth of bacteria, molds, and yeasts, prevent oxidation that leads to rancidity, and maintain the flavor, color, and texture of food products. They are also easy to use and can be incorporated into various food formulations.

Product Uses
Food preservatives are widely used in the food industry for a variety of applications. They are commonly added to baked goods, dairy products, beverages, and canned foods to prolong freshness and ensure product safety during storage and distribution.

Precautions
When using food preservatives, it is essential to follow recommended usage levels to avoid potential adverse effects on health. Some individuals may have sensitivities or allergies to specific preservatives, so it is crucial to label products accurately. Adhering to food safety regulations and guidelines is also important to ensure consumer safety. Tag: Previous_one：Laboratory Equipment
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