Explain the principle of any two food processing technologies and give their applications in food. Describe any one active packaging.
Food processing technologies play a crucial role in transforming raw ingredients into consumable products while maintaining safety, quality, and extending shelf life. Two prominent food processing technologies are thermal processing (specifically pasteurization) and freezing, each serving distinct purposes in the food industry.
1. Thermal Processing (Pasteurization):
Thermal processing, particularly pasteurization, involves heating food products to a specific temperature for a predetermined time to eliminate harmful microorganisms while preserving the sensory and nutritional qualities of the food. This process is named after Louis Pasteur, who pioneered the technique in the 19th century.
Principle: The principle of pasteurization revolves around using heat to reduce microbial populations in food and beverages without significantly altering their flavor, texture, or nutritional value. The process typically involves heating the food to temperatures ranging from 60°C to 100°C for a specific time, followed by rapid cooling to prevent recontamination.
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