Pectin was isolated from apple pomace by acid (HCI), ethylenediaminete
traacetic acid (EDTA) and ammonium oxalate (AO) extraction methods, un
der different conditions (i.e. time, temperature and concentration of
extractant). Maximum yield of pectin obtained was 10.4% with EDTA meth
od (extraction with 0.5% EDTA and 90-degrees-C for 1 hour) followed by
8.4% with HCl method (extraction at pH 2, 90-degrees-C for 4 hours) a
nd 6.8% with AO method (extraction with 0.25% AO at pH 3.5, 90-degrees
-C for 1 hour).