Acidic juices are too acidic for direct consumption. They are usually mixed with other products to reduce the levels of acidity. Citric acid can be replaced with acidic juices as acidifiers.
Almost all types of juice contain organic acids. Be it apple, orange, vegetable or grape juice. Different fruits and vegetables have variances in their acid combination. Although some fruit juices contain more acid than others, a lot of acidic juices share the same acid levels. The lowest quantity of acid is found in vegetable juices.
Fruit and vegetables always have more than two or three kinds of acid. The most common are malic and citric acid. Juices made from natural fruits contain same amounts of acid as the fruits. Some juices have more acid than the natural fruits. Extra acid has been added to bring out the sour taste and fruit flavors. Malic acid is more in apples, grapes, bananas, pears and peaches. You can find citric acid in citrus fruits like lemon and lime. It should be noted that malic acids are far less acidic than citric acids.
Acidity levels are measured using the pH scale. The range of measurement is from zero to 14. Zero means it is highly acidic while 14 means it is least acidic. pH of 7 means neutral.
Lemon, limes and cranberry juices have the highest acid levels. Their pH rates between 2 and 2.8. Apple, pineapple, blueberry, strawberry, orange and pear juice usually have a pH scale of 3.3 to 4.6. Banana has low acid levels. If you mix banana in your juice, the acid level will reduce to 4.5 to 5.2.
Vegetable juices are less acidic than fruit juices. Green vegetable juices have pH levels of 5.5 to 6.8. Tomatoes have pH levels of 4.1 to 4.9. Technically, tomatoes are fruits that’s why it is more acidic than the other vegetables.