I’m very happy to see more people in the community embrace juicing. It’s an excellent way to increase your daily servings of healthy fresh fruits and vegetables, as well as reduce the stress on your digestive system. Cheers to you all!
There are, however, some very important things that every juicer should know about juicers, and juicing. This is especially true for people planning a juice fast because juice will be their primary food source.
When plants are juiced they lose the benefit of their surrounding tissue that would normally protect from oxidation (decay). Oxidation destroys active enzymes, reduces the nutritional value, negates many of the benefits of juicing, and can eventually make the juice unsafe to drink. For this reason it is important to make juice in small batches (preferably one glass at a time) and drink it immediately. This is the best way to ensure freshness. When immediate consumption is not reasonably possible juice should be refrigerated in an air tight glass container for no more than 24hrs (depending on the type of juicer you use).
Centrifugal Juicers (the kind with a flat spinning blade and a cone shaped mesh strainer) spins at fast speeds swirling the juice and mixing it with air as the plants are ground. This is why there can be a lot of foam. With this type of juicer oxidation begins immediately, so the juice should be consumed right away. Centrifugal juicers also produce the most pulp, least juice, and need to have the blade replaced every 6-12 months to continue working well.
Masticating Juicers (the kind with a corkscrew shaped auger inside) work at a much lower speed, and actually chew up the plants to produce the juice. For this reason they produce more juice, less pulp, and much less foam. Oxidation still occurs, but refrigerated juice can last up to 24hrs under the right conditions. Masticating juicers are more expensive to buy than centrifugal juicers, but can last for many years (I’ve heard of ones lasting 6+ years, and still going strong).
Twin gear Juicers use inter-meshing stainless steel twin gears to squeeze and press the plants. They operate at less than 200 RPMs so they produce the most juice with the least pulp, and have the highest nutritional value. When refrigerated in a proper container juice from a twin gear juicer can last up to 3 days. Twin gear juicers can juice all fruits and vegetables. They are the best, but most expensive juicers on the market.