00000cab a22000004a 4500 IPP-00000661621 IPP 20250324154759.0 250324s2011 xx d | ||r |||||eng|| eng Tang, Pek-Yee Yield and some chemical properties of pectin extracted from the peels of dragon fruit [Hylocereus polyrhizus (Weber) britton and rose] 2011 graphs ; tables ; references Dragon fruit [Hylocereus polyrizus (Weber) Britton and Rose] peels, a by-product of food processing, were investigated as an alternative source of pectin. Dried dragon fruit peels were extracted at pH 5 using citric acid and sulphuric acid, and the resulting pectin extracts were analyzed for yield and some chemical parameters. Results showed that extraction with 0.1 M sulphuric acid gave higher degree of amidation (12.90 %) but lower degree of esterification (15.92 %). The two extraction conditions did not show impact on the measurement of yield, galacturonic acid, degree of acetylation, moisture content and ash content. The results indicate the commercial significance of dragon fruit pectin. Pectins Chemical properties Kek, Thiam-Seng Gan, Cheng-Zu Hee, Chiu-Yen Chong, Cheng-Hin Woo, Kwan-Kit Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) Vol. 94, no. 3 (Sep. 2011), 307-311 Article FI