My son worked at a reknowned fruit juice producer. The stuff started as a barrel of concentrate, and whenever they were in the room with the product they had to wear hazmat suits and breathing protection at all times. Once, when a barrel came off a forklift and split open, they had to evacuate the whole factory for a few days until it was neutralized.
The conc syrup was diluted, and then had to be kept in a huge vat for 40 hours to let the mixture become safe enough to consume, then it could be bottled. On one occasion they bottled one batch earlier than this and shipped it to a local school. A large number of pupils were sent to hospital with burns to the mouth and throat and being sick after drinking it in their break,
I would never touch a fruit juice myself knowing that it starts life as a highly toxic syrup.