Lane 3, control denatured pulp; Lane 4, control denatured peel; Lane 5, eluate pH 2.2 of native pulp; Lane 6, eluate pH 7.2 of native pulp; Lane 7,
eluate pH 2.2 of native peel; Lane 8, eluate pH 7.2 of native peel; Lane 9, eluate pH 2.2 of denatured pulp; Lane 10, eluate pH 7.2 of denatured pulp; Lane 11, eluate pH 2.2 of
denatured peel; Lane 12, eluate pH 7.2 of denatured peel; Mr denotes molecular mass standards.