The majority of fruits are considered to be alkaline producing foods. Anything with a pH greater than 7 is considered to be alkaline and is non-acidic. When it comes to foods, it is not the acid in the food that matters, but rather what occurs in your body once the food is consumed. For example, citrus fruits are acid, but in your body they are alkaline-producing foods. Lemons, limes, avocados and kiwi are categorized as highly alkaline fruits and are therefore non-acidic. Other non-acidic fruits include bananas, cantaloupe, apples, coconut, grapefruit, grapes, oranges and watermelon.