All natural, raw, vegetable and fruit juices are Alkaline-producing. (Fruit juices become more acid-producing when processed and especially when sweetened.)
The Science: Why are acidic lemons alkaline-producing?
The answer is simply that when we digest the Food, it produces alkaline residue. That's why we classify it as an alkaline food. When we digest a food it is chemically oxidized ('burned') to form water, carbon dioxide and an inorganic compound. The alkaline or acidic nature of the inorganic compound formed determines whether the food is alkaline or acid-producing. If it contains more sodium, potassium or calcium, it's classed as an alkaline food. If it contains more sulphur, phosphate or chloride, it's classed as an acid food.
What difference does it make to have toxic blood?
In order for the Body to remain healthy and alive, your body keeps a delicate and precise balance of blood pH at 7.365, which is slightly alkaline. The body does whatever it has to in order to maintain this balance. The problem is that most people have incredibly acid lifestyles. Acid is produced in your body whenever you have stress, upset emotions and when the food you eat is acid-forming.
The typical diet is significantly acidic. So what happens to your body when you're over-acid? Your body will store excess acid in your fat cells (which is why so many people have such trouble losing weight).