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Extraction of dietary fiber from Citrus junos peel with subcritical water

Paper ID Volume ID Publish Year Pages File Format Full-Text
19324 43059 2012 7 PDF Available
Title
Extraction of dietary fiber from Citrus junos peel with subcritical water
Abstract

The juice processing by-product of Citrus junos is a high potential source of valuable compounds such as essential oils and a high amount of dietary fiber, consisting of pectin, hemicellulose, and cellulose. The residues obtained from supercritical CO2 extraction of C. junos peel was used as a starting material for hydrothermal treatment to separate pectin and hemicellulose. The experimental apparatus used was a semi-continuous flow extractor. Treatment conditions were in the temperature range of 160–320 °C and water flow rates of 2.1, 3.5, and 7.0 mL/min under a pressure of 20 MPa. Approximately 78% of the pectin was contained in the fraction collected at 160 °C at each flow rate. Most of the hemicellulose was separated from cellulose up until the fraction obtained at 200 °C. The proportion of cellulose in the residue obtained after hydrothermal treatment at 200 °C reached about 80%. Moreover, the characteristics of recovered cellulose were expected to exhibit greater crystallinity and lower impurity than that of the raw material based on the results of scanning electron microscopy (SEM), attenuated total reflectance Fourier transmission infrared (ATR-FTIR), and thermogravimetric-differential thermal analyses (TG-DTA).

► Environmentally friendly separation technique for citrus juice processing residue. ► Sequential separation of pectin, hemi-cellulose and cellulose using subcritical water. ► Effective recovery method for pectic polysaccharide from plant cell wall. ► Refined cellulose recovery technique from natural plant tissue.

Keywords
Citrus junos; Pectin; Hemicellulose; Cellulose; Hydrothermal
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Extraction of dietary fiber from Citrus junos peel with subcritical water
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 90, Issue 2, April 2012, Pages 180–186
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us