Optimization Study of Citrus Wastes Saccharification by Dilute-acid Hydrolysis

Content Provider	Semantic Scholar
Author	Talebnia, Farid Pourbafrani, Mohammad Lundin, Magnus Taherzadeh, Mohammad J.
Copyright Year	2008
Abstract	The effects of time, acid concentration, temperature and solid concentration on dilute-acid hydrolysis of orange peels were investigated. A central composite rotatable experimental design (CCRD) was applied to study the individual effects of these hydrolysis factors and also their interdependence effects. The enzymatic hydrolysis of the peels by cellulase, β-glucosidase, and pectinase enzymes resulted in 72% dissolution of the peels, including 18.7% galacturonic acid and 53.3% of a total of glucose, fructose, galactose, and arabinose. Dilute-acid hydrolysis up to 210°C was not able to hydrolyze pectin to galacturonic acid. However, the sugar polymers were hydrolyzed at relatively low temperature. The optimum results were obtained at 116°C, 0.5% sulfuric acid concentration, 6% solid fraction, and 12.9 min retention time. Under these conditions, the total sugars obtained at 41.8% dry peels and 2.6% of total hexose sugars were further degraded to hydroxymethylfurfural (HMF). No furfural was detected through these experiments from decomposition of pentoses.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://bioresources.cnr.ncsu.edu//BioRes_03/BioRes_03_1_0108_Talebnia_PLT_CitrusWastesSaccharif_Acid.pdf
Language	English
Access Restriction	Open
Subject Keyword	5-hydroxymethylfurfural Arabinose CELLULASE Cold Temperature Design of experiments Experiment Fructose Furaldehyde Galactose Glucose Hexoses Interdependence Maxima and minima Neuritis, Autoimmune, Experimental Pentoses Polygalacturonase Sugars Sulfuric acid Thioctic Acid galacturonic acid pectin
Content Type	Text
Resource Type	Article