NDLI: Desorption of Fructose from a Packed Column to an Oleic Acid/Fructose Oleate Mixture for Employment in a Bioreactor System

Content Provider	Springer Nature Link
Author	Pyo, Sang Hyun Hayes, Douglas G.
Copyright Year	2008
Abstract	Adsorption isotherms for a packed column consisting of fructose and silica gel in contact with a liquid phase consisting of oleic acid and fructose mono- and di-oleate at 65 °C were determined to assist the column’s utilization in a bioreactor system for the solvent-free lipase-catalyzed synthesis of saccharide ester biosurfactants. The liquid-phase fructose content was very low, ranging from 0.005 to 0.1% (w/w), with the higher values obtained for a higher fructose concentration in the column and a higher ester content in the liquid phase. The desorption behavior of fructose followed the Freundlich isotherm. An increase in the liquid phase space velocity increased the initial rate of fructose desorption linearly. Dynamic light scattering measurements demonstrate solutions obtained by mechanical stirring of crystalline fructose and oleic acid/fructose oleate contained 50–250 μm sized aggregates, even after centrifugation at 12,000 rpm, but that the aggregates were absent from the desorption column effluent stream. Therefore, employment of a desorption column will lead to a low saccharide concentration in the liquid phase, but will reduce suspension-induced fouling of lipase in a bioreactor downstream of the column, which could improve the retention of lipase activity.
Starting Page	1033
Ending Page	1040
Page Count	8
File Format	PDF
ISSN	0003021X
Journal	Journal of the American Oil Chemists' Society
Volume Number	85
Issue Number	11
e-ISSN	15589331
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-10-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biocatalysis Bioreactor Biosurfactant Desorption Freundlich isotherm Lipase Saccharide–fatty acid esters Solventless bioreactor system Biotechnology Food Science Agriculture Biomaterials Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Chemical Engineering

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