Yes. Citrus fruits contain citric acid. The notion of them having an alkaline effect on the body is nonsense.
the acid
Acidic Fruit
Citrus fruits are acidic (oranges, lemons, etc.)
lemon
All citrus fruit is acidic, not basic.
Most citrus fruit such as oranges and lemons are fairly acidic.
Amanatsu is a citrus fruit that is grown in Japan.
Normally fruit essence is a food for bacteria. Acidic fruit, such as citrus, or vinegars, can kill some bacteria.
The acid in the fruit
No it does not, you need something acidic like citrus fruit to stop it from setting.
No, passion fruit is not a citrus fruit.
Acidic
Mangoes are not a citrus fruit. No they are not. Mango is not a citrus fruit as it doesn't contains vitamin c.