which might be caused by the high organic acid content in
citrus peel and made the extraction process approached acid-like
process. Meanwhile, the galactose of APP was higher than CPP’s
while the arabinose was lower, which indicated that arabinogalactan
side chains of APP and CPP were different. Since the value of
Rha/Gal A (1.5e2.0) and (Gal þ Ara)/Rha (8.75e16.56) of APP were
slightly higher than CPP’s, APP possibly had more proportion of
hairy regions and side chains than CPP.