What are the main differences between cold and hot pressing technologies?
The cold pressing of oily seeds does not require any pre conditioning of the input material. The only requirement is that the input seed is 98% clean and free of metal and stone particles. The oil yield achievable through cold pressing is typically between 34,5-35,9% of the total weight of the input material (in case of 42% oil content). In case of hot pressing, the 98% clean, stone and metal free input material is also required, and the material is conditioned for pressing in two more steps. First the seeds go through a masher which breaks up the seeds, and the mashed material is then heated to 100-120 degrees (Celsius) in a so-called cooker. From the cooker the hot material is loaded directly into the press. The oil yield in case of hot pressing technologies is normally between 35,7-37,8% of the total weight of the input material (in case of 42% oil content). When choosing between cold and hot pressing technologies, one must always consider the intended use of the produced vegetable
