Oil Press Raw Materials Guide

Introduction

Selecting the right raw materials is critical for successful oil production. Different seeds and nuts have varying oil content, processing requirements, and market values.

Understanding Raw Material Properties

Key Characteristics

1. Oil Content: Higher oil content = higher yield per kg
2. Moisture Content: Critical for optimal extraction (too dry = reduced yield, too wet = emulsification)
3. Seed Size and Shape: Affects crushing efficiency
4. Hardness: Determines pressing pressure needed
5. Market Value: Premium oils = higher profit margin

Common Oil-Bearing Materials

1. Sesame Seeds

• Oil Content: 45-55%
• Optimal Moisture: 5-6% hot press, 7-8% cold press
• Dehulling: 98%+ removal recommended
• Roasting: 160-180掳C for 25-30 minutes
• Yield: Hot 48-54%, Cold 42-48%
• Recommended Models: HN325, HN355, HN426

2. Peanuts (Groundnuts)

• Oil Content: 45-50%
• Optimal Moisture: 5-7% hot press
• Dehulling: 95%+ removal recommended
• Roasting: 165-185掳C for 30-35 minutes
• Yield: Hot 45-50%, Cold 38-42%
• Recommended Models: HN325, HN355, HN480

3. Rapeseed (Canola)

• Oil Content: 40-45%
• Optimal Moisture: 6-8% hot press
• Dehulling: 85-90% removal
• Roasting: 150-170掳C for 20-25 minutes
• Yield: Hot 38-42%, Cold 32-36%
• Recommended Models: HN325, HN355, HN500

4. Walnuts

• Oil Content: 60-70%
• Optimal Moisture: 7-9% cold press
• Dehulling: Remove shells completely
• No roasting (cold press only)
• Yield: Cold 45-50%
• Recommended Models: HN426, HN480, HN500

5. Almonds

• Oil Content: 50-60%
• Optimal Moisture: 7-9% cold press
• Dehulling: Remove shells completely
• No roasting (cold press only)
• Yield: Cold 42-48%
• Recommended Models: HN426, HN480, HN500

6. Coconut

• Oil Content: 60-70%
• Optimal Moisture: 6-8%
• Dehulling: Remove outer shell and husk
• Grating: 1-2 mm particles
• Yield: Hot 60-65%, Cold (VCO) 55-60%
• Recommended Models: HN426, HN480, HN500

7. Soybeans

• Oil Content: 18-22%
• Optimal Moisture: 7-9% hot press
• Dehulling: 90%+ removal
• Roasting: 140-160掳C for 25-30 minutes
• Yield: Hot 18-22%, Cold 15-18%
• Recommended Models: HN480, HN500

8. Tea Seeds

• Oil Content: 30-40%
• Optimal Moisture: 5-7% hot press
• Dehulling: Remove shells
• Roasting: 150-170掳C for 25-30 minutes
• Yield: Hot 28-35%
• Recommended Models: HN325, HN355, HN426

Material Preparation Best Practices

Seed Cleaning

• Remove impurities (stones, metal, dirt)
• Separate damaged and broken seeds
• Target: < 0.5% impurities

Moisture Conditioning

• Too dry: Add moisture with spray humidifier
• Too wet: Dry with hot air dryer or sun drying

Roasting (Hot Pressing Only)

• Sesame: 160-180掳C, 25-30 min
• Peanut: 165-185掳C, 30-35 min
• Rapeseed: 150-170掳C, 20-25 min

Crushing

• Optimal particle size: 2-4 mm for most materials
• 3-5 mm for nuts

Storage and Handling

Storage Conditions

• Temperature: 15-25掳C
• Humidity: < 65% relative humidity
• Duration: < 6 months for best quality

Pest Control

• Use rodent-proof containers
• Regular inspection
• Appropriate pest control measures

Conclusion

Selecting the right raw materials is essential for successful oil production. For personalized recommendations on which materials to process and how to optimize your production, contact Haonuo’s technical team.