Drawing on over five years of experience with drying projects for functional foods and health supplements, I'd like to share a real-world case study.
In January 2025, a project went live at the "Oriental Beauty Valley" in Shanghai's Fengxian District. It featured four KOSIX 15P top-discharge, closed-loop dehumidification heat pump dryers (dew-point dehumidification model) paired with four modular drying chambers (each measuring 6900 × 1200 × 2800 mm). The system is used to dry functional gummies-specifically Vitamin C, probiotic, and collagen gummies-with a daily processing capacity of 6 tons.
Key specifications: The drying temperature is set at **26–35°C** with precise control to within ±1°C. The drying chambers feature interiors fully lined with 304 stainless steel. The project helped the client secure multiple international quality system certifications.
Let's break down the technical logic behind this temperature range.
First, the 26–35°C range isn't an arbitrary figure; it represents the "lowest common denominator" for three types of active ingredients.
In a moist environment, Vitamin C begins to degrade slowly above 30°C; degradation accelerates at 40°C and plummets drastically at 50°C. Above 70°C, it is essentially destroyed. Subjecting Vitamin C gummies to a standard 40–50°C drying process effectively deactivates the Vitamin C before the product even reaches the consumer-so how could they still be called "functional" gummies?
The thermal death temperature for live probiotic bacteria is typically 40–45°C. *Bifidobacterium* strains are even more sensitive than *Lactobacillus*; their reproduction and metabolism begin to malfunction above 35°C. Collagen peptides undergo irreversible denaturation at 45°C.
Therefore, the 26–35°C range isn't merely a "convenient choice"; it is a mandatory "safety zone" defined by the shared limitations of these three heat-sensitive substances.
Details
Customizable:color, label, packaging, quantity
packaging :Bottle,Box
Season:all
Specification：60 gummies/bottel
Place of origin:shaanxi china
Applicable People:women ,men
MOQ:1 bottle
Storage Method：cool dry place
Effectiveness：Height gummys
Delivery time：about 5-7 days
Price:8-12usd/bottle
Second, while standard heat pumps struggle in this temperature range, "closed-loop dew-point dehumidification" technology handles it effectively.
Most heat pumps are designed for drying operations in the 40–80°C range. When the temperature drops to 26–35°C, the temperature difference between the compressor's condensation and evaporation stages is drastically compressed, causing both the Coefficient of Performance (COP) and dehumidification capacity to decline. The traditional "hot air circulation plus window-opening for dehumidification" approach is particularly awkward under these conditions: Shanghai summers frequently see outdoor temperatures of 30–35°C and humidity levels exceeding 80%. Opening a window to vent moisture? The air outside is more humid than the air inside, making the effort entirely futile.
Kexin's closed-loop dew-point system operates not by "heating to evaporate and then venting," but by leveraging the condensation effect on the cooling side: recirculated air passes over the evaporator's cold surface (5–10°C), causing water vapor to condense into liquid water and drain away. As long as the recirculated air temperature remains above the dew point, condensation occurs on the cold surface-even if the air is only 26°C. Because the evaporator temperature can be maintained at 5–10°C, the dew-point differential remains sufficient. This represents a "dimensional strike" in terms of physical principles-an overwhelming technological advantage.
Third, the use of 304 stainless steel is not merely for aesthetics; it is a mandatory requirement for certification.
Anyone experienced in exporting health products knows that drying rooms are a critical inspection point for FDA dietary supplement GMP or EU certifications. Issues such as rust spots on sheet-metal walls, grime accumulation in weld seams, or the inability to perform Clean-in-Place (CIP) procedures result in point deductions or even outright rejection. An interior lined with 304 stainless steel and a smooth, crevice-free design constitute the baseline hardware requirements to ensure certification success. The Oriental Beauty Valley project achieved zero point deductions in the drying phase-a "zero" that, in the context of certification, is far more valuable than the cost savings gained by choosing cheaper materials over stainless steel.
Fourth, the architectural logic of combining four independent units.
The export of functional foods is typically characterized by "diverse product varieties, small batch sizes, and flexible production scheduling." One day, Vitamin C gummies might require a temperature of 30°C, while the next day's order for collagen gummies requires 35°C. If a single large central unit were used to serve a massive drying room, the entire line would have to be shut down and readjusted for every product switch. Using four independent units paired with four separate drying rooms allows for simultaneous operation at different temperature profiles; a malfunction in one unit does not jeopardize the delivery schedules of the other lines.
In summary, the core challenge in drying functional gummies is not simply "whether they can be dried," but "how to achieve dehydration without deactivating the active ingredients." A modular, independent architecture featuring a 26–35°C operating range, closed-loop dew-point dehumidification, and a 304 stainless steel clean drying chamber represents the most mature engineering solution currently available for this type of product.
Shaanxi Lv Ke Chun Yuan Biotechnology Co., Ltd
Our address
Huaxia Yue World, Weibin District, Baoji City, Shaanxi Province
Phone Number
+86-13571783771
sales01@lucynatural.com
