Max Gerson wrote about how to juice using the Norwalk juicer.
The key in the book was that the cell walls cannot be broken to help eliminate toxins from the system.
Potassium Asparatate acidifies, so does AMLA, Rubidium, Laetril B17, Ascorbic Acid and acidic foods. The bowels must be acidic to aid in eliminating toxins.. http://www.ncbi.nlm.nih.gov/pubmed/11150438