oranges or their juice are a wholesome food. The orange contains vitamin C, folic acid, vitamin B-6 and potassium in addition to a variety of phytochemicals designed to help the plant thrive in the sun. There is no problem with fresh-frozen orange juice. The goodness in the fresh juice will be waiting to jump into your glass after the juice defrosts.
Freezing is an interesting method of food preservation. Cold slows down reactions associated with spoilage. In addition, water forms crystals when frozen, making it unavailable to bacteria that need water to thrive.
You want to be sure to keep any food well covered, with a minimum of dead space, when freezing. But allow for expansion. Frozen water crystals take up about 9 percent more space than the same amount of water as a liquid.