Explain the principles of food preservation. Classify the foods based on perishability

Food preservation is the process of preventing the spoilage and decay of food for an extended period of time. The principles of food preservation include:

1. Reducing moisture content: Most microorganisms require moisture to grow and reproduce. Reducing the moisture content of food can help prevent spoilage and extend its shelf life. Techniques for reducing moisture content include drying, salting, and smoking.

2. Controlling temperature: Microorganisms grow best at certain temperatures, and controlling the temperature of food can help prevent spoilage. Cold temperatures, such as those used in refrigeration and ____ _______ ________ ____ __________ ________ ____ _________ __________.
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