Fruit Chip Belt Dryer in Chile

From the belt dryer table, the DHG-500 (electrically heated) was selected. Why this model?

• Low temperature: 60°C operating range – preserves anthocyanins
• Gentle airflow: No high-velocity air that can damage delicate berries
• 5-layer design: Extended drying time (4-6 hours) for even moisture removal
• Color preservation: Prevents browning of red/blue pigments
• Capacity: 21 m² drying area – enough for 0.3-0.4 tons/hour

Claudia chose the electric model because their facility had no steam boiler. The DHG-500 fruit chip belt dryer in Chile runs on electricity only.

What He's Drying – Mixed Berry Chips

Chile is a major berry exporter. Claudia's company processes:

• Strawberries (sliced, 5mm): 40% of mix – delicate, high moisture (90-92%)
• Blueberries (whole, halved): 35% of mix – small, high in anthocyanins
• Raspberries (whole): 25% of mix – very delicate, hollow structure

Fresh berry moisture: 85-92% (varies by type)

Target final moisture: 8-10% for crispy chips

Challenge: Berries are delicate, easily crushed, and heat-sensitive.

Installation – Gentle Drying for Delicate Fruit

The DHG-500 fruit chip belt dryer arrived at the Port of San Antonio – Chile's largest port on the Pacific coast.

Shipping time from Qingdao to San Antonio is about 35-40 days. The machine was packed in a 20-foot container with:

• DHG-500 dryer main unit (50kW heating + fans)
• 5-layer mesh belt conveyor system (1.0m wide)
• Control panel with PLC and temperature controllers
• Spare belts (one set – fine mesh for small berries)
• Installation manual and electrical diagram in Spanish

Customs clearance in San Antonio took about 6 days. Total landed cost was about 25% higher than the FOB price.

Installation took three weeks. Claudia's team prepared a concrete foundation – the DHG-500 is about 8 meters long. They poured a 200mm reinforced slab.

The electrical hookup required 380V, 50Hz three-phase (Chilean standard). The 50kW heater required a 120-amp breaker.

The first test run was with mixed berries (strawberry slices, blueberry halves, whole raspberries) at 88% average moisture. The berries were spread on the belt (single layer, not touching). Belt speed was set to 55 minutes per layer – total drying time 275 minutes (4.6 hours) across 5 layers. Air temperature: 60°C. Output moisture: 9%. Color: Bright red/blue. Texture: Crispy. Antioxidant retention: 82%. Perfect.

Performance – Color and Antioxidants Preserved

After six months of operation, Claudia documented the following results:

Before (hot air dryer – 75°C, 4 hours):

Drying temperature: 75°C

Color: Dark brown-red (anthocyanin degradation)

Texture: Leathery, chewy

Antioxidant retention (ORAC value): 45-50%

Customer complaints: 5-6 per month about "dark, chewy berries"

After (DHG-500 belt dryer – 60°C, 4.6 hours):

Drying temperature: 60°C

Color: Bright red/blue (excellent)

Texture: Crispy, snappy

Antioxidant retention (ORAC value): 80-85% (65% improvement)

Customer complaints: Zero in six months

Production output:

Input moisture: 85-92%

Output moisture: 8-10%

Throughput: 0.35 tons/hour of dried berries

Daily output (16 hours): 5.6 tons

Annual output: 1,500 tons

Quality improvements (lab tested):

Strawberry color retention: 85% (vs 45% in hot air dryer)

Blueberry anthocyanin retention: 82% (vs 48%)

Raspberry texture: 90% crispy (vs 30%)

ORAC antioxidant value: 8,200 μmol TE/100g (vs 4,500 – 82% improvement)

Customer Feedback – Claudia's Experience

Here's what Claudia said after six months (paraphrased from a conversation, translated from Spanish):

"Berry chips are supposed to be bright and crispy. Our hot air dryer was turning them dark and chewy. The antioxidants were being destroyed. Customers complained.

"The DHG-500 changed that. 60°C is the perfect temperature – hot enough to dry efficiently, cool enough to preserve the anthocyanins. Our berries come out bright red and blue, crispy, with high antioxidant levels.

"The 5-layer belt gives us 4.6 hours of gentle drying. The berries don't move – they just sit on the belt. No crushing, no damage.

"A few operational notes: Strawberries need to be sliced uniformly (5mm). Blueberries should be halved (whole berries trap moisture). Raspberries are delicate – we handle them last. The belts need daily cleaning – berry sugar residue is sticky.

"Would I recommend this machine? Yes. For any berry processor, low-temperature belt drying is essential for preserving color and antioxidants. The DHG-500 paid for itself in ten months."

Why Belt Drying for Mixed Berries

Berries have unique drying requirements. Here's why 60°C and belt drying work:

Anthocyanin preservation: Anthocyanins (red/blue pigments) degrade above 65°C. At 60°C, 80-85% are preserved. At 75°C, only 45-50% remain.

Antioxidant retention (ORAC value): Oxygen Radical Absorbance Capacity measures antioxidant power. Belt drying preserves 80-85% of ORAC value vs 45-50% in hot air dryers.

Texture preservation: Berries are delicate. High-velocity air can crush them. Gentle airflow (belt dryer) preserves structure.

Color retention: Bright color is essential for consumer appeal. Belt drying preserves natural red/blue hues.

Claudia's lab results:

The 5-Layer Design – Gentle and Uniform

The DHG-500's 5-layer design allows extended drying at optimal temperature:

• Layer 1: 62°C – gentle surface drying
• Layer 2: 61°C – continued drying
• Layer 3: 60°C – moisture migration from interior
• Layer 4: 59°C – final moisture removal
• Layer 5: 58°C – finishing to 8-10% moisture

Total drying time: 4.6 hours. The low, consistent temperature preserves color and antioxidants.

Single-Layer Drying – Preventing Overlap

Berries must not overlap during drying. Claudia's procedure:

• Layer thickness: Single berry/slice (3-5mm thick for strawberries, 5-8mm for blueberries)
• Spacing: 5-10mm between pieces
• Reason: Overlapping berries trap moisture and cause uneven drying

The DHG-500's belt width (1.0m) allows Claudia to dry about 15,000 strawberry slices per hour.

Pre-Treatment – Gentle Handling

Berries are delicate. Claudia's pre-treatment:

• Strawberries: Sliced to 5mm thickness (uniform)
• Blueberries: Halved (whole berries trap moisture)
• Raspberries: Left whole but handled last (most delicate)

No chemical pre-treatment – customers want clean-label products.

Shipping – Qingdao to San Antonio

The DHG-500 shipped from Qingdao to Port of San Antonio, Chile.

Shipping time from Qingdao to San Antonio is about 35-40 days. The route goes through the South China Sea, past Singapore, across the Indian Ocean, around the Cape of Good Hope, and across the Atlantic to South America, then through the Panama Canal (or around Cape Horn – depending on routing).

The machine was packed in a 20-foot container. Customs clearance in San Antonio took about 6 days. Total landed cost was about 25% higher than the FOB price.

The truck transport from San Antonio to Maule Region was about 300km – roughly 3.5 hours.

What Claudia Learned – Lessons for Other Berry Processors

After six months of running the DHG-500, Claudia shared several observations:

Lesson 1: 60°C is the optimal drying temperature for berries. Higher destroys anthocyanins and antioxidants. Lower takes too long.

Lesson 2: Slice strawberries uniformly (5mm). Thicker slices trap moisture. Thinner slices burn.

Lesson 3: Halve blueberries. Whole blueberries trap moisture and take much longer to dry.

Lesson 4: Handle raspberries gently. They are the most delicate. Claudia dries them on the top belt (coolest temperature).

Lesson 5: Clean belts daily. Berry sugar residue is sticky and can cause sticking. Claudia's team uses hot water and brushes every evening. Takes 45 minutes.

What RICHI Provided Beyond the Machine

RICHI provided several services that helped Claudia get the DHG-500 operational:

• Spanish documentation: The manual and electrical diagram were provided in Spanish.
• Temperature guidance: RICHI provided recommendations for berry drying temperatures.
• Pre-treatment advice: RICHI recommended slicing and halving for uniform drying.
• Spare parts kit: RICHI recommended a spare parts kit based on Claudia's volume – including belts, heater elements, and sensors.
• Remote support: When Claudia had questions about belt speed adjustment for different berry types, a RICHI technician walked her through it via video call.

Is a Fruit Chip Belt Dryer Right for Your Operation?

For a fruit processor producing premium dried berry chips, low-temperature belt drying is essential.

Consider the DHG-500 if:

• Your target drying temperature is 55-65°C
• Your capacity requirement is 0.3-0.5 tons/hour of dried fruit
• You process delicate berries (strawberries, blueberries, raspberries)
• Color and antioxidant retention are priorities

Consider a larger model (DHG-1000) if:

• Your capacity requirement is 0.6-1.0 tons/hour

For Claudia's berry processing plant, the DHG-500 was the right investment. It preserved color (85% retention), improved antioxidant retention (45% to 82%), achieved crispy texture (90% crispy), and paid for itself in 8-10 months.

Final Thoughts

If you're a berry processor making dried fruit chips for health-conscious consumers, don't compromise on drying method. High-temperature drying destroys anthocyanins and turns berries brown and chewy.

The DHG-500 fruit chip belt dryer operates at 60°C – the optimal temperature for preserving antioxidants and color. The 5-layer design provides 4.6 hours of gentle drying. The result is bright, crispy, nutrient-rich berry chips that customers love.

For premium berry chips, the math is simple: low temperature = higher antioxidants = better color = premium pricing = faster payback.

RICHI offers documentation in Spanish, temperature guidance, pre-treatment advice, and remote support. Contact RICHI Machinery through the website with your fruit type, slice thickness, and capacity for a recommendation. Tell them about your berry application – they can help you select the right dryer and temperature settings for optimal antioxidant retention.