pectinextractedfrompeels of passionfruit is comparable toMandarin
Orange peels and Coorge Orange peel, which have been shown to
contain pectin of 150–200 grades (Agarwal & Pruthi, 1972; Pruthi
et al., 1961). It is reported that yellow passion fruit (Passiflora edulis
f. flavicarpa Degener) rind consists of 19.1% pectin substances on dry
weight basis. The fractionation of these pectic substances withwater,
ammonium oxalate and dilute nitric acid solutions yielded pectin
fraction with a high anhydrogalacturonic acid content and had a low
degree of methyl esterification (Yapo & Koffi, 2006). Pinheiro et al.
(2008) reported that degree of esterification of pectin increasedwhen
lower citric acid concentration was used for extraction from passion
fruit peel. A citric acid concentration of 0.086% (w/v) for 60min
yielded high ester pectin.