Food drying microwave technology
Drying Process
The agri-food industry requires drying solutions that are fast, energy-efficient, and capable of preserving the organoleptic and nutritional qualities of both raw ingredients and finished products, across a wide range of applications — from herbs and spices to fruits, insects, cheese chips, and snacks.
High-Efficiency Drying Solutions
Thanks to volumetric heating, energy is instantly and fully absorbed by the product itself — eliminating any warm-up time and ensuring consistent moisture reduction. Whether used as a standalone process or as a final drying step, these systems also contribute to product decontamination and overall process optimization.
Key advantages of microwave and radio frequency tempering
Instant process
No warm-up, flexible production with instant start capability
Drying efficiency
Moisture residual value < 10%
Preservation of food quality
Preservation of the visual aspect and the nutritional properties
Flexibility and optimization
Dry fully with our solution, on its own or as a final step
Selective heating
No risk of surfae overcooking
Food safety
Potential decontamination during processing
Fiability
Consistent and repeatable results
Fast treatment
Compared to hot-air drying: Microwave drying is 10-15 times faster in typical conditions
Products that can be processed
Food drying microwave technology enables fast, uniform, and energy-efficient processing across a wide range of agri-food products, from herbs and spices to insects and snacks, while preserving quality and meeting food safety requirements.
Spice drying
Preserving color, aroma, and active compounds is essential to the spice industry. Drying solutions must therefore ensure precise moisture control while protecting the delicate qualities of each product.
Herb drying
Dried herbs are used across the food, pharmaceutical, and medical industries, where preserving color, active ingredients, and flavors is critical.
Insect drying
With several machines already sold and deployed, drying solutions for insects must deliver fast, homogeneous, and repeatable results while preserving taste and appearance — with no bitterness, no crumbling, and guaranteed microbiological safety.
Cheese drying
Drying cheese-based products requires fast, uniform processing that preserves texture and flavor while avoiding any risk of surface overcooking. Solutions must be adaptable — from industrial-scale continuous lines to smaller batch volumes — and deliver consistent, high-quality results in just a few minutes
NUTRIDRYER RANGE
Discover Sairem’s drying systems
Our industrial microwave food dryer, NutriDryer, is a drying solution with volumetric heating for food industry professionals processing both raw ingredients and finished products.
With instant start-up and no warm-up time, our microwave systems maximize throughput, reduce energy consumption, and preserve food quality — whether used as a standalone process or as a final drying step.
Here’s a questions-and-answers section about our microwave drying solutions.
Yes. Microwave drying can be used as a standalone process or as a final drying step, seamlessly integrating into existing lines to reduce overall processing time and energy consumption.
Thanks to volumetric heating, energy is absorbed directly by the product — ensuring homogeneous drying without surface overcooking.
Microwave drying can contribute to decontamination during processing, depending on the product. For insects, results show no Clostridium perfringens and less than 10 cfu/g of enterobacteria after treatment.
Yes. Microwave drying is a proven technology for insect processing, with multiple successful installations and repeat customers. It preserves the natural shape, taste, and appearance of the product, while ensuring microbiological safety — with no Clostridium perfringens and less than 10 cfu/g of enterobacteria after treatment.
Yes. With a proven capacity of 2,250 chips per hour, microwave technology ensures uniform drying without any risk of burning, achieving moisture residual values below 2% in full compliance with customer specifications.
Case studies
Volumetric heating: fast and uniform energy transfer
Volumetric heating uses microwave energy to generate heat directly inside the product, enabling faster, more uniform and energy-efficient industrial processing.
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What are the different industrial drying technologies?
Discover the main industrial drying methods, from hot air and freeze-drying to microwave or RF drying, and find the best method for your process.
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Microwave drying of insects and meal worms
Microwave drying applies controlled energy to rapidly reduce moisture in insects and mealworms, enabling uniform dehydration and shorter processing times.
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