Red to blue as it has boelomin which is acidic but alkalanic(basic)in nature.
Explanation:
Pineapple contains bromelain. This naturally occurring substance is most concentrated in fresh pineapple.
Bromelain has anti-inflammatory and anticancer properties. Although it’s acidic, some experts believe that it has an alkalizing effect as you digest it. This may be beneficial to people with acid reflux. People believe the bromelain enzyme reduces swelling, bruising, and other injury-related pains.