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Industrial jam processing and pasteurization with microwave technology
Industrial jam processing involves several critical steps including fruit preparation, cooking, and pasteurization. Among these steps, pasteurization plays a key role in ensuring microbiological safety and extending the shelf life of fruit preserves.
However, conventional thermal methods used in jam processing lines often lead to overheating of the product, which can negatively affect fruit texture, flavor, and color.
Microwave technology offers a more efficient solution for industrial jam processing, enabling rapid and homogeneous heating while preserving the natural qualities of the fruit.
This case study presents how SAIREM helped a premium fruit preserves manufacturer optimize its jam processing line using microwave pasteurization.
Customer needs for jam processing
In the production of fruit preserves and jams, pasteurization is essential to eliminate unwanted microorganisms and ensure product safety.
Traditional jam processing methods rely on prolonged heating at high temperatures, which can damage the sensory qualities of the fruit ingredients.
Our client, a producer of premium fruit preserves, wanted to improve its jam processing line by introducing a solution capable of ensuring effective pasteurization while preserving the quality of the fruit.
The objective was to maintain food safety while avoiding excessive cooking temperatures that could affect the final product.
Challenges in industrial jam processing
During conventional jam processing, the product must reach temperatures close to 90 °C before filling to guarantee proper pasteurization.
However, heat losses occur throughout the production line, especially along pipes and equipment. To compensate for these losses, manufacturers often need to increase the cooking temperature during earlier stages of the process.
This overheating can negatively impact:
- fruit flavor
- product color
- texture of fruit pieces
- overall product quality
The challenge was therefore to ensure reliable jam pasteurization without degrading the characteristics of the fruit preserves.
Microwave solution for jam processing
SAIREM engineers developed a continuous-flow microwave reactor designed to integrate directly into the jam processing line.
This system rapidly heats large quantities of jam just before filling, bringing the product temperature to 90 °C within seconds.
With this microwave solution:
- the cooking temperature can be reduced by approximately 20 °C
- pasteurization occurs immediately before packaging
- overheating of the fruit preserves is avoided
The reactor is capable of processing industrial production capacities, ranging from several hundred kilograms per hour to more than 15 tons per hour.
By integrating microwave technology into the jam processing system, our client significantly improved production efficiency while maintaining the premium quality of its fruit products.
Benefits for fruit preserves manufacturers
Microwave technology represents an innovative solution for improving industrial jam processing and pasteurization.
Because microwave heating occurs volumetrically and extremely rapidly, the required pasteurization temperature can be reached without damaging the fruit components.
Key advantages include:
- Rapid and homogeneous heating
- Improved jam pasteurization efficiency
- Preservation of fruit flavor and color
- Protection of fruit pieces and texture
- Optimized production efficiency
The system can be easily integrated into existing jam processing lines, replacing only a short section of the pipeline.
Why choose microwave technology for jam processing?
Microwave technology offers a powerful solution for optimizing industrial jam processing and pasteurization.
By combining rapid heating with precise temperature control, manufacturers of fruit preserves can ensure food safety while preserving the natural qualities of their products.
For producers seeking higher efficiency and better product quality, microwave processing provides a clear technological advantage.
Improve your jam processing line
Contact SAIREM to discover how microwave technology can optimize your jam processing and pasteurization while preserving fruit quality.
SAIREM’s microwave equipment for food pasteurization
To meet your production needs for the pasteurization of ready-to-eat meals, SAIREM has developed a flexible modular industrial pasteurizer that scales from 200 kg/h to 2 t/h.
Our microwave pasteurization systems require minimal maintenance and feature easy-clean design, reducing operation costs and downtime.
SAIREM’s range delivers the flexibility and efficiency needed to process diverse products – ready-to-eat meals, fruit jars and prepared foods – according to your specific requirements.
Jam pasteurization is a thermal process used to eliminate microorganisms and extend the shelf life of fruit jams and marmalades.
Microwave heating allows rapid and uniform temperature increase, reducing overheating and preserving fruit quality.
Yes. SAIREM microwave reactors can easily replace a short section of the production pipeline.