Archive
Drying & Dehydration
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Lyophilization
Lyophilization, or freeze-drying, is a dehydration process in which frozen product is placed under vacuum so that ice sublimes directly into vapour…
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Osmotic Dehydration
Osmotic dehydration partially removes water from fruit by immersing it in a concentrated solution, typically sugar syrup, so water moves out of…
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Rehydration Capacity
Rehydration capacity measures how much water a dried product reabsorbs and how quickly it recovers its original texture when soaked. It is…
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Shade Drying
Shade drying is natural drying of product under cover, protected from direct sunlight, using ambient air circulation. It is traditional for some…
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Solar Drying
Solar drying uses purpose-built solar dryers that concentrate sun heat and manage airflow to dry fruit, vegetables and herbs faster and more…
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Spray Drying
Spray drying atomises a liquid — juice, puree or extract — into fine droplets inside a chamber of hot air, producing a…
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Belt Drying
Belt drying is a continuous convective process in which product moves on a perforated belt through zones of heated air. Temperature and…
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Sun-Dried Product
Sun-dried product is dried outdoors using direct solar heat and natural air movement, a traditional method for apricots, grapes, plums and tomatoes…
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Case Hardening
Case hardening is a drying defect in which the outer layer of the product dries too fast and hardens, trapping moisture inside.…
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Dehydrated Product
Dehydrated product is food from which most of the water has been removed by drying, typically to a moisture content that prevents…