Downstream Processing of Crude Ultrasound-Extracted Pectin From Saba Banana ( x (BBB Group) "Saba") Peel.

Ultrasound-assisted extraction of pectin from Saba banana ( x (BBB Group) "Saba") peels produced crude pectin that requires further purification. Two downstream processes (alcohol washing (AW) and acid demethylation (AD)) were compared. AW involved gelatinous precipitate washing with 85% alcohol and pressing to squeeze out liquids, while AD involved a sequential AW of the dried pectin with 60% acidified alcohol, and 60% and 95% alcohol solutions.