TYPE - Centrifugal, Low Speed and High Speed Masticating and Hydraulic Press Juicers. Centrifugal juicers introduce oxygen into the juice, creating oxidation. Oxidation degrades nutrients not immediately but over time. To maximize the nutrients of the juice, we recommend you drink the juice as soon as you make it. Low speed masticating juicers produce a higher quality juice because they don't produce as much oxidation.
High speed masticating juicers can be problematic if heat is generated.
Heat will destroy nutrients on contact, unlike oxidation which occurs over time. Hydraulic Press juicers produce very little oxidation, and therefore produce the highest nutrient juice. Different juice extraction processes produce varying quality juice in terms of nutrients. They are usually guaranteed with warranties of 5 to 10 years. An inexpensive juicer lacks reliability, and is typically warranted 90 days to 1 year.