UPM Institutional Repository

Physicochemical properties of pectin extracted from jackfruit and chempedak fruit rinds using various acids


Citation

Leong, C. M. and Mohd Adzahan, Noranizan and Syed Muhammad, Sharifah Kharidah and Choo, Wee Sim (2016) Physicochemical properties of pectin extracted from jackfruit and chempedak fruit rinds using various acids. International Food Research Journal, 23 (3). pp. 973-978. ISSN 1985-4668; ESSN: 2231-7546

Abstract

This study investigated the effect of citric, nitric and sulfuric acid on the yield and physicochemical properties of pectin extracted from jackfruit and chempedak fruit rinds. Yield and physicochemical properties such as uronic acid content, degree of esterification, degree of acetylation and colour of pectin solution were determined and compared. Yield of pectin from jackfruit and chempedak fruit rinds with nitric acid as extractant were 14.81 ± 1.02% and 17.62 ± 0.69%, respectively, which were the lowest. The uronic acid content of all extracted pectin was more than 65%. All jackfruit and chempedak fruit rind pectins in this study were high methoxyl pectin with degree of esterification ranging from 72-75% for jackfruit rind pectin and 66-69% for chempedak rind pectin. The degree of acetylation of all extracted pectin was lower than 1%. For both jackfruit and chempedak fruit rind pectins, the citric acid-extracted pectin produced darker, more reddish and yellowish solution and thus is least preferable. Among the acids studied, sulfuric acid was the best extractant due to the high yield of pectin and the solution of this pectin was brighter, less reddish and yellowish.


Download File

Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
Publisher: Faculty of Food Science and Technology, Universiti Putra Malaysia
Keywords: Acids; Chempedak; Fruit rind; Jackfruit; Pectin
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 03 Aug 2016 02:50
Last Modified: 03 Aug 2016 02:50
URI: http://psasir.upm.edu.my/id/eprint/29320
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item