Laitram Machinery's CoolSteam® Blue Pasteurization system for pasteurization of Almonds, Pistachios, Walnuts, Cashews, Macadamias, and Pecans
Laitram Machinery's CoolSteam® Blue Pasteurization system for pasteurization of Almonds, Pistachios, Walnuts, Cashews, Macadamias, and PecansPhoto - Laitram Machinery

Laitram Machinery CoolSteam® Blue: Continuous steam nut pasteurization system

Laitram Machinery, a global US-based company founded by J.M. Lapeyre in 1943, specializes in food processing equipment. The company is renowned for introducing groundbreaking products to the seafood industry, including the world's first automatic shrimp peeler and the patented CoolSteam® cooking Technology. Recently, the company expanded into nut processing equipment and developed the CoolSteam Pasteurization System "CoolSteam® Blue", revolutionizing the tree nut industry's way of pasteurizing nuts.   

Laitram Machinery's CoolSteam® Blue Pasteurization system is an innovative and proven system for processors to ensure raw dry nuts' safety while maintaining their natural characteristics. CoolSteam® Blue uses the principles of CoolSteam technology, which involves using low-temperature steam and forced convection to create a mixture of air and steam at temperatures below 212°F (100°C). This method quickly exposes the nuts to steam, resulting in a 5-Log Reduction in harmful microorganisms. Additionally, air's presence allows for condensational heating and evaporation on the product's surface.  

Laitram Machinery's nut pasteurization system is a continuous flow, 4-step, a low-temperature steam process that organically pasteurizes tree nuts for a 5log+ reduction of pathogens.  

Laitram CoolSteam® Blue Nuts processing equipment has an independently operated Pre-Heater, Pasteurizer, Dryer, and Cooler Zone. The Coolsteam 4-Step Process, Continuous Flow, First-In, First-Out:   

  • Preheat: Preconditioning step to reduce condensation  

  • Pasteurize: Kill Step, 5-log Reduction   

  • Dry: Convection Drying to flash off surface moisture and stabilize the texture

  • Cool: Bring Product Below 80˚F  

The process virtually mitigates all moisture uptake and skin lift to eliminate disturbing each nut's raw form and quality. CoolSteam® Blue produces exceptionally consistent product quality while operating at minimal cost with extraordinary flexibility and offering a Ready to Pack product. CoolSteam® Blue provides a gentle treatment, no vacuums, and a continuous process with no product handling to avoid damage to fragile products such as cashews, almonds, macadamias, or walnuts. The product comes out ready to pack; no storing to equalize the temperature before packing.  

As the demand for safe and high-quality tree nuts grows, countries such as India, Vietnam, Australia, Europe, and the USA require effective pasteurization methods for internal consumption and export businesses. Strict regulations are followed by each country, making it crucial to have reliable and efficient solutions. The CoolSteam® Blue Nut Pasteurization System has been proven with over 40+ lines worldwide with validations for Almonds, Pistachios, Walnuts, Cashews, Macadamias, and Pecans. This system offers gentle treatment, ease of operation, and proven effectiveness, making it an asset for nut processors worldwide. Minimal labor is required for operation, and the easy-access build prioritizes food safety and cleanability.   

Laitram Machinery has 265+ CoolSteam Systems installed worldwide, compromising 40+ Nuts CoolSteam Blue system. Some of its customers include Llopis in Spain, Olam in Vietnam and the US, Wonderful Pistachios & Almonds, Select Harvest, and more. Laitram Machinery is a leader in Steam Pasteurization for nuts in the USA.   

Our valued partner
Our valued partner

Looking for dependable and cutting-edge equipment for processing nuts? Partner with Laitram Machinery! They're dedicated to enhancing their customers' operations and providing top-quality service.  

Learn more about Laitram Nuts Pasteurization system

Laitram Nut Pasteurization Principle

Take a pick into the CoolSteam Blue

Why Forced Convection, what makes CoolSteam unique

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