Jellies
PHvalue of jellies in between 3.1 to 3.5
Grapes
PHvalue of grapes is around 5.5 to 6.5
Banana
PHvalue of banana is in between 5.5 to 7
Mangosteen
The strength of mangosteen color was pH dependent, the strongest yellow being observed at the lowest pH. This visually evident color was in accord with the b value, which increased with decreasing pH.
Malic acid is an organic compound with the molecular formula C4H6O5. Malic acid is also used to make some medicines, add flavor to food, and serve as a natural exfoliating ingredient in many products used to improve skin tone.