Preserving Fresh Juice

Adding lemon:
Adding a few drops of lemon juice per ounce to your juice will help preserve the life span of your juice.
Storing in a refrigerator:
Fruit and vegetable juices can be preserved in the refrigerator. However, keep in mind the type of juicer you have. Most juice starts the oxidation process within 24 hours of being juiced.
Juices from a Centrifugal juicer will not keep as long as a Single or Twin Gear juicer. Here is a timeline:

• Centrifugal Juicers: Juice will keep for approximately 2-6 hrs. or 24 hrs. with lemon
• Single-gear Juicers: approximately 24 hrs. or 1-2 days with lemon
• Twin-gear Juicers: approximately 48 hrs. or 2-3 days with lemon

Storing in the freezer:
Fruit juices freeze better than vegetable juices. When you are done juicing your fruits you can add a few drops of lemon juice per ounce. Then place the juice in a sealable container, this will eliminate freezer burn. Frozen fruit juices will keep for several weeks. However, if you keep them any longer they will begin to go bad even while frozen.

Freezing vegetable juices is different from Fruit juices. The liquid separates during the freezing process, but this can be used in cooking. A lot of people try blanching the vegetable juice before freezing. (this is done to stop the enzyme activity). However there are many studies that do not recommend blanching because it does significantly diminish vitamins that are stored in the food.