Food Preservation

These involve using heat

These involve using heat, cold, or removal of water to prevent microbial growth. Examples include pasteurization, sterilization, refrigeration, freezi

In this method

In this method, substances like salt, sugar, vinegar, and chemical preservatives (e.g., benzoic acid, sodium nitrite) are added to food. These create

This method uses beneficial microorganisms like

This method uses beneficial microorganisms like bacteria and yeast to ferment food. Fermentation produces acids (like lactic acid) or alcohol that pre

It combines two or more preservation

It combines two or more preservation methods (like low temperature + salt + acidic pH) to create multiple 'hurdles' for microbes, making it harder for