Cold-pressed juice
Making cold-pressed juice is a two-step process. The first stage is to shred the fruits and vegetables into a pulp. Typically the shredding process uses a steel rotating disc. Produce is loaded into a large hopper feeding tube and typically falls into a filter bag. The second process is the hydraulic press; this exposes the shredded produce to extreme pressures between two plates. The pressure causes the juice and water content from the produce to drip into a collection tray below, leaving behind the fibre content in the filter bag. The fibre left behind is generally composted, recycled in food products or discarded.
Cold-pressed juice
There are laws and regulations governing the production and distribution of raw juice that vary widely by region. In the United States, the US Food and Drug Administration prohibits wholesale distribution of raw juice, stating that it may only be sold directly to consumers. In order to sell juice wholesale, the juice must undergo a process that achieves a "5 log reduction in bacterial plate count." The process must reduce the amount of microorganisms by 100,000 times. There are several processes available that can achieve a 5-log reduction, including heat pasteurization and ultraviolet light filtering, but the most common process in the cold-pressed juice industry is HPP.