banana that you are using there. You need to check if its ripe or unripe because unripe ones are little more acidic than the other. To be specific unripe bananas have a pH of around 5.6 and ripe one has a pH of 6.5

Please check this for complete reference on the same: Are Bananas Acidic?

This depends on the banana that you are using there. You need to check if its ripe or unripe because unripe ones are little more acidic than the other. To be specific unripe bananas have a pH of around 5.6 and ripe one has a pH of 6.5