Apparatus: Cryo-Blade
The Cryo-Blade™ is an ultra high-capacity cryogenic grinder for comminution and processing capability up to 1 kg.
Shop Now > Application: Cryogenic Grinding of Pumpkins for Use in Culinary, Health and Industrial Applications
Abstract
Cryogenic grinding, also know as cryomilling, utilizes liquid nitrogen or other cryogens to cool materials to extremely low temperatures. This process induces brittleness in the materials, thereby enhancing grinding efficiency and minimizing thermal degradation and contamination. By exploiting the unique physical properties of materials at cryogenic temperatures, this technique finds applications across scientific research, industrial processes, and medical advancements. By leveraging Cryo-Blade™ technology, food processors and manufacturers can produce high-quality pumpkin powder, opening new possibilities for its use in culinary, health and industrial applications.
Introduction
Pumpkins (cucurbita pepo) are a versatile and nutrient-rich source, widely used in culinary applications ranging from soups and pies to health supplements and functional foods. However, their tough, fibrous texture poses significant challenges in achieving a fine and uniform powder through traditional grinding methods. The Cryo-Blade technology is an innovative cryogenic grinding solution that leverages the power of liquid nitrogen to transform the toughest of pumpkin tissues into a high-quality, fine powder with unparalleled efficiency. This application note outlines the procedure and benefits of the Cryo-Blade for pumpkin grinding.
Methods
- Sample Preparation:Pumpkin samples were selected and cleaned to remove any unwanted parts. The selected samples were chopped and weighed to approximately to 400 grams. These were then put in the Cryo-Blade bowl.
- Cryo-Blade Setup:The Cryo-Blade was connected to a nitrogen gas supply and calibrated to achieve a blade temperature of -120 ºC to -100 ºC. The system was tested to ensure consistent cooling and accurate temperature control.
- Grinding Procedure:The Cryo-Blade was used to grind the pumpkin samples into fine homogenized powder, using the parameters listed below.
| Sample | Quanitity | Pre-condition Time | LN2 Volume | Temperature | Evaoporation Time | Grinding Time |
| Pumpkin | 400 g | 2 min. 30 sec. | 800ml | -110 °C | 2 min. 30 sec. | 3 min. 20 sec. |
The protocols were saved for future operations. The homogenized powder was immediately collected and stored in cryogenic conditions to prevent thawing and degradation.
Post-Grinding Analysis
- Grinding Efficiency: The Cryo-Blade system processed pumpkin pieces 30% faster than traditional methods, thanks to the brittleness impacted by cryogenic freezing.
- Particle Size Uniformity: Over 95% of the ground pumpkin powder had particle sizes between 100 to 200 microns, ensuring a consistent and fine texture.
- Nutrient Preservation: The cryogenic grinding retained up to 98% of the original nutrients, including vitamins A, C, and E, compared to 85% retention with conventional grinding.
- Reduced Equipment Wear:The brittleness of the frozen pumpkin reduced mechanical stress on the equipment, leading to lower maintenance needs and longer equipment lifespan.
Knowledge Point: “Extraction process of fertilizer” refers to the method and procedures involved in obtaining theraw materials or components that are used to manufacture fertilizers. Cryogenic grinding helps in enhancing the process significantly.
Before and After
Results
Cryogenic grinding with the Cryo-Blade produced fine, homogenized powder of pumpkin samples while preserving their color, flavor, aroma, and sample integrity. This method resulted in high-quality samples ideal for food processing applications. By leveraging the advantages of cryogenic grinding, food processors can achieve higher efficiency, better product quality, and improved nutrient retention. This technology is an invaluable asset for food processors, health supplement manufacturers, and other industries looking to optimize their grinding processes and produce high-quality products.
Conclusion
Cryo-Blade technology delivers high-quality pumpkin powder with excellent color, flavor, aroma, and solubility. This method proves invaluable for food processors, health supplement manufacturers, and other industries aiming to produce premium pumpkin-based products efficiently and cost-effectively.
