Subcritical water extraction of low methoxyl pectin from pomelo ( Citrus grandis (L.) Osbeck) peels
Document Type
Article
Publication Date
1-1-2018
Abstract
Low methoxyl (LM) pectin was extracted from pomelo peels using subcritical water in a dynamic mode. The effects of pressure and temperature were analyzed through a face-centred central composite design. Extraction yield and the rate of extraction were found to be predominantly influenced by temperature. Optimization of the subcritical water extraction (SWE) yielded an optimized operating condition of 120 °C and 30 bar with a predicted pectin yield of 18.8%. The corresponding experimental yield was 19.6%, which is in close agreement with the predicted data. The pectin obtained from the optimized condition was further analyzed for its physicochemical properties. The kinetics of the SWE was also evaluated whereby the one-site kinetic desorption model was found to be in good agreement with experimental data (R2 > 0.94).
Keywords
Low methoxyl (LM) pectin, Dynamic mode subcritical water extraction, Kinetic and physicochemical properties
Divisions
fac_eng
Funders
University of Malaya Research Grant [ PG182-2015B and RP002D-13AET ]
Publication Title
International Journal of Biological Macromolecules
Volume
116
Publisher
Elsevier