Microwave Drying - Black Soldier Fly (BSF) Processing

It is used for efficient processing, heating, drying or material transformation.

High efficiency, process reliability and complete customization.

Yes, Kerone offers fully customized engineering solutions.

Food, chemical, pharma, biomass, rubber, textile and more.

Kerone ensures high product quality through strict engineering standards, advanced testing procedures, and precision-controlled manufacturing systems.

Kerone's systems are designed to handle BSF biomass with initial moisture content ranging from 60% to 80%, achieving final moisture levels below 10% as required for safe storage.

Yes, Kerone offers continuous tunnel microwave dryers with conveyor belt systems that allow uninterrupted high-volume production for commercial insect farms.

The systems include microwave leakage detectors, interlocked access doors, emergency stop mechanisms, overtemperature protection, and compliance with IEC safety standards.

Fresh BSF larvae and prepupae carry high moisture content alongside an active enzymatic and microbial load, meaning the biomass begins to degrade through autolysis and microbial growth almost immediately after harvest if not stabilized quickly. Slow drying methods extend the window during which these degradation processes continue, risking protein quality loss, off-odor development, and microbial proliferation before the moisture content drops low enough to halt spoilage. Microwave drying addresses this by rapidly removing moisture throughout the biomass simultaneously rather than relying on surface evaporation, shortening the vulnerable window and helping preserve protein integrity and the nutritional value that makes BSF biomass valuable as an animal feed ingredient.

Conventional oven drying relies on hot air convection over an extended period, during which prolonged heat exposure can degrade heat-sensitive proteins and oxidize the lipid fraction, which is particularly significant for BSF larvae given their naturally high fat content. Microwave drying's shorter processing time and more uniform internal heating reduce the cumulative thermal exposure the biomass experiences, which generally supports better retention of protein digestibility and reduces lipid oxidation compared to extended conventional drying. The degree of improvement depends on the specific drying parameters and initial moisture content, so processors evaluating the switch typically run comparative nutritional analysis on dried product from both methods using their own larvae before finalizing a production process.

Fresh BSF larvae and prepupae typically arrive at the dryer with moisture content in the 60 to 80 percent range depending on harvest timing, feed substrate, and larval growth stage at collection. This high initial moisture content actually works in favor of microwave processing, since water is the primary medium through which microwave energy is absorbed, meaning wetter biomass couples efficiently with the microwave field from the start of the drying cycle. Kerone's systems are designed to handle this typical moisture range and bring final moisture content down below 10 percent, which is the threshold generally required for safe long-term storage without risk of mould growth or further microbial activity.

Insect farming facilities need to manage biosecurity risks from both the incoming organic waste feedstocks used to raise larvae and the potential for cross-contamination between batches on shared processing equipment. Kerone's BSF drying systems use food-grade stainless steel construction with hygienic conveyor belt designs that allow thorough cleaning between batches, reducing the risk of microbial carryover. Because the drying process itself achieves significant microbial reduction through the heat generated, the drying step also contributes to the facility's overall biosecurity strategy, though it should be considered one control point within a broader hygiene program rather than a substitute for proper feedstock sourcing and facility sanitation practices.

Energy cost per kilogram of dried product is a critical economic factor in insect protein production, where margins are often tighter than in more established protein industries. Microwave drying's direct energy coupling with the moisture in the biomass, rather than heating a large volume of surrounding air as conventional dryers do, generally results in lower energy consumption per kilogram of water removed, which directly supports the economics of commercial-scale operations. The exact energy efficiency achieved depends on dryer loading density, target final moisture content, and how well the system's power settings are matched to the biomass's actual moisture removal curve, making process optimization during commissioning an important step for controlling long-term operating costs.

Yes, continuous tunnel microwave dryers are specifically designed to integrate into automated production workflows where freshly harvested larvae move directly from separation equipment onto the dryer conveyor without manual intermediate handling. This direct integration is particularly valuable for BSF processing given how quickly fresh biomass begins to degrade, since minimizing the time between harvest and moisture stabilization directly supports final product quality. Real-time moisture sensing with closed-loop control allows the system to automatically adjust to natural batch-to-batch variation in incoming larvae moisture content without requiring manual recalibration, supporting the kind of consistent, low-labor operation that automated insect farming facilities are designed around.