The Food category adds a total of 5 juices. The Apple, Carrot, Melon, Pumkin and Golden Apple juice. The first 4 juices give you a bit of hunger back and saturation.
If you are looking for more Juices, check out the Slimefun Addon ExoticGarden
Golden Apple Juice
When consuming a Golden Apple Juice, it will give you Absorption for 20 seconds.