Please use this identifier to cite or link to this item: http://dspace.univ-bouira.dz:8080/jspui/handle/123456789/16154
Title: Conventional and Microwave-Assisted Extraction of Mucilage from Opuntia ficus-indica Cladodes: Physico-Chemical and Rheological Properties
Authors: Remini, Hocine
Madani, Khodir
Mamou-Belhabib, Kahina
Felkai-Haddache, Lamia
Rihouey, Christophe
Picton, Luc
Keywords: Opuntia ficus-indica
SEC/MALS/VD/DRI
Mucilage
Rheological properties
Conventional extraction
Microwave-assisted extraction
Issue Date: 14-Nov-2015
Publisher: Université Akli Mohend Oulhadj Bouira
Citation: Université Akli Mohend Oulhadj Bouira
Abstract: Cactus pear cladodes processing has potential value for mainstream industries and is equally important for marginal rural communities in arid regions. This work is focused on physico-chemical and rheological properties of Opuntia ficusindica (OFI) peeled cladodes extracted by conventional method BCE^ and using microwave-assisted extraction BMAE.^ MAE gave the highest yield extraction (8.13 %, w/w) within the lowest extraction time (500 W/7 min) and provided more protein (×1.03) and carbohydrates (×1.51) than CE. The monosaccharides detected by gas chromatography were arabinose, galactose, rhamnose, xylose, and galacturonic acid. The dialyzed mucilage solution characterized by SEC/MALS/VD/ DRI (size-exclusion chromatography coupled with online multi-angle light scattering, viscometer detectors, and differential refractive index) revealed fractions with molecular weight (Mw) ranging from 15.3–15.7×106 g mol−1 for the CE extracts and about 16.7–17.5×106 g mol−1 for the MAE extracts. Dynamic oscillatory testing has been used to study the rheological properties of mucilage solution within the concentration of 0.50–3.00 % (w/v) at 25 °C. The rheological profiles of CE and MAE showed similar behavior. At low frequency and low mucilage concentration (<2.00 %), the viscous component (G") predominated over the elastic component (G'), while for higher frequencies, the behavior is reversed (G'>G"). If safely controlled, alternative energies like microwaves could extract soluble polymers with comparable properties to commercial ones, conventionally extracted.
URI: http://dspace.univ-bouira.dz:8080/jspui/handle/123456789/16154
Appears in Collections:Articles

Files in This Item:
File Description SizeFormat 
Conventional_and_Microwave_Assisted_Extr.pdf698,59 kBUnknownView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.