Abstract: Phytonutrients or other active materials can be extracted from plant material using a particular process which requires extracting juice from the plant material, followed by breaking open the plant cells to release the phytonutrients by subjecting the juice to high shear conditions, followed by concentrating the juice using a membrane which is preferably a nanofiltration membrane, and collecting the concentrated extract which can then be spray dried info a powder and used as a nutritional supplement, or which can be further extracted using supercritical carbon dioxide to provide an even more concentrated product. The process is designed to maintain a high levels of phytonutrients in the active condition and to reduce plant and equipment costs especially in the use of supercritical carbon dioxide.