Oligosaccharides: The Golden Ingredient for Functional Foods Amid the Big Health Boom

1. Low sweetness with no health burdens to meet wellness demands
   It delivers only 30%–50% of sucrose’s sweetness with a mild, non-cloying taste. It can partially replace sucrose in low-sugar and low-calorie foods, eliminating health risks brought by traditional high-sugar diets.
2. Anti-cavity oral protection suitable for all age groups
   It cannot be broken down by oral bacteria to produce acid that erodes tooth enamel. Widely used in children’s snacks and elderly food, it addresses the cavity risks of conventional candies and baked goods.
3. High tolerance for broad application coverage
   Most consumers will not suffer bloating or diarrhea after intake. It avoids sharp blood sugar spikes for diabetics and serves as a dairy substitute for lactose-intolerant people, catering to all age brackets.
4. Excellent thermal and acid stability to break process limitations
   It boasts outstanding resistance to heat and acid. Its molecular structure remains intact during high-temperature baking and acidic beverage production at pH 2–12 without losing functional activity. Compatible with baking, sterilization and long-term storage, it offers food manufacturers greater room for formula innovation.

Surging Market Demand for Functional Oligosaccharides

Prominent Industry Pain Points: Four Core Challenges of Conventional Oligosaccharide Spray Dryers

1. Severe tower wall buildup leading to heavy material loss and safety hazards
   High viscosity and surface tension cause atomized syrup droplets to stick to the tower inner wall, forming agglomerated powder deposits. Long-term high-temperature baking darkens and scorches the deposits. Factories must halt production every shift to clean wall buildup, then re-dissolve, concentrate and re-dry recovered materials. This pushes up labor time and energy consumption. Worse, incomplete cleaning may mix burnt particles into finished powder, forming black specks that compromise purity and food safety.
2. Inadequate drying leading to excessive moisture content
   Conventional drying towers often feature insufficient effective volume or underpowered heating systems, failing to fully dry atomized droplets inside the tower. For example, a centrifugal spray dryer designed to produce powder with 95% dry matter often yields products exceeding moisture standards. Extra post-drying procedures cut production efficiency and risk damaging oligosaccharide functionality via secondary heating.
3. Flawed structural design exacerbating process defects
   Many towers suffer oversized cone angles and poorly configured air outlets. Overly large cones shorten material residence time, preventing full contact with hot airflow; ill-designed outlets create turbulent air and uneven droplet distribution, worsening wall adhesion and incomplete drying.
4. Poor atomization resulting in inconsistent particle size
   Unstable atomization and overlong spray distances of traditional centrifugal atomizers produce droplets with drastically varying diameters (some exceeding 200 μm). Tiny droplets are swept away by hot air as dust loss, while oversized droplets retain excess moisture and form wet powder. The final product features uneven particle size and poor flowability, complicating subsequent packaging and application.

Innovation Solves Industrial Difficulties: Technical Breakthroughs of Longxin’s New Pressure Spray Dryer

1. Precision Atomization System: Accurate particle control to resolve incomplete drying

   Customized for high-viscosity oligosaccharide syrup, the multi-channel pressure atomizer comes with interchangeable ceramic or stainless steel inserts (orifice sizes: 0.5–3.0 mm) and precisely adjustable atomization angles for tight control over average droplet size. Unlike centrifugal atomizers plagued by overlong spray distances and uneven particle distribution, this system instantly boosts droplet specific surface area for full contact with hot air and rapid moisture evaporation. It eliminates incomplete drying and excess moisture, stabilizing dry matter content of finished powder above 95% to meet high-purity standards.
2. Optimized Drying Tower Structure: Anti-stick design to cut material loss

   Two structural breakthroughs address tower wall powder buildup:

• Optimized cone angle: Set at 45°, much narrower than the 60°+ cones of traditional equipment, it extends material residence time for thorough drying. The tower body adopts mirror-polished 304 stainless steel to reduce adhesion surfaces and minimize wall deposits.
• Upgraded hot air distributor: A 3D stereoscopic hot air distributor delivers uniform wind speed with minimal deviation, generating stable spiral hot airflow to avoid local overheating and burnt powder. Droplets disperse evenly without direct impact on tower walls, fundamentally reducing adhesion.
  The tower is also equipped with an air-swept anti-stick system and timed air hammers to clear minor deposits in real time, removing the need for frequent production halts and lowering material loss rates.

3. Two-Stage Powder Recovery System: Efficient capture to boost output and purity

   Conventional single-stage bag dust collectors easily suffer blocked filter bags that reduce airflow and limit throughput. Longxin adopts a dual recovery system combining two-stage cyclone separators and pulse back-blow bag dust collectors for superior powder capture efficiency.
4. Intelligent Temperature & Feeding System: Stable production compatible with complex processes

   To preserve oligosaccharide functionality, multi-mode heating (steam, electric, gas optional) is fitted with a Siemens PLC and advanced PID intelligent algorithm for precise, adjustable inlet air temperature control. Accurate temperature regulation prevents local overheating that causes oligosaccharide hydrolysis or denaturation.

   The feeding system uses positive displacement diaphragm pumps with adjustable flow rates of 0.5–20 m³/h, integrated with online viscometers and pressure sensors. It monitors feed viscosity and delivery pressure in real time and automatically adjusts feeding speed to maintain consistent atomization, accommodating oligosaccharide syrups of varying concentrations without repeated parameter tuning.
5. Energy-Saving & Eco-Friendly Design: Cost reduction and sustainable green production

   For energy efficiency, waste heat recovery technology recycles residual heat from exhaust gas to preheat incoming fresh air, cutting overall energy consumption by 10–20% versus traditional dryers. For environmental compliance, an exhaust treatment system combining pulse dust removal and activated carbon adsorption delivers low emission concentrations to meet national environmental standards, supporting manufacturers’ green production targets amid tightening environmental regulations.

    

   

Empowering Industrial Upgrade: Longxin Technology Helps Manufacturers Capture Big Health Market Opportunities

1. Premium product quality
   Spherical powder with uniform particle size, excellent flowability and instant solubility is directly applicable to high-end segments including infant formula and health supplements, lifting product added value.
2. Higher production efficiency
   Single-unit output surpasses traditional equipment, shortening annual production hours and slashing labor costs.
3. Expanded application scope
   The dryer suits drying of various functional ingredients such as FOS, XOS and sugar alcohols. It supports both hot-air drying and cold-air granulation modes to cover beverage, baking, pharmaceutical and other production lines. One machine fulfills multiple production demands and reduces capital expenditure on separate equipment.

Tap Into the Big Health Market Through Technological Innovation