You may not think twice about how the ingredients for your salad made their way to your refrigerator – but you have an intricate process known as the cold chain, specifically the food cold chain, to thank for that. In short, it’s a system of distribution and transportation that takes food from farm to market – and then to your home – while maintaining safe temperatures and preventing food waste.
Take the journey of a head of lettuce. Farmers can use refrigerant in temperature-controlled greenhouses to grow the lettuce, even in some of the driest climates. Then, processing facilities use refrigerant to keep lettuce cool before preparing it for shipment to supermarkets and other customers.
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