I wouldn't microwave my juices (personal choice). I take the caps off a few times a day so I can squeeze the bottle a few times to let out the air and let new air in. I do this daily for 1-2 weeks. Then the bottle goes back into the cupboard.
Steeping is a must...
A freshly mixed juice is nothing compared to a weeds steeped juice, its a whole new juice. The raw edges are gone, and pleasent flavours arise in you juice...
is this something you would do with every bottle of Juice or just the ones that are ruff around the edges?