The combination of the patented multi-stage roasting process and the patented steam pasteurization technology, which achieves a greater than 5-log reduction of harmful microorganisms such as salmonella, provide increased flexibility. The Solano S complies with the latest standards for modern pasteurization technology and can be adjusted to meet a wide range of requirements.

Any combination of roasting time, temperature and the option of direct steam injection for safe pasteurization is possible in batch operation. Using fluid-bed technology ensures that energy is distributed evenly between each individual nut, thus making it possible to achieve homogeneous and optimal aroma and taste for the entire batch.

The multi-stage roasting process, developed and patented by Bühler, largely preserves the microstructure of the nuts and thus achieves an unparalleled shelf life. The speed at which nuts oxidize can be reduced by a factor of between two and ten when compared to conventional roasting processes.

Safe pasteurization and high product quality are achieved through controlled condensation of saturated steam on the surface of the product. This is achieved by directing steam into the roasting chamber for a defined period of time and at multiple locations after a defined pre-heating phase. Pathogenic microorganisms such as Salmonella are consistently reduced by more than 5 log.