Ultrasound-assisted extraction of xyloglucan from apple pomace

Ultrasound-assisted extraction was evaluated as a simpler and more effective alternative to conventional extraction method for the isolation of xyloglucan from apple pomace. The apple pomace samples were extracted under indirect sonication in an ultrasound cleaning bath. The ultrasound extraction wa...

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Bibliographic Details
Published in:Ultrasonics sonochemistry 2006-09, Vol.13 (6), p.511-516
Main Authors: Fu, Caili, Tian, Haijun, Li, Quanhong, Cai, Tongyi, Du, Wenjuan
Format: Article
Language:English
Subjects:
Apple pomace
Biochemistry - methods
Chemistry
Colorimetry
Exact sciences and technology
Extraction
General and physical chemistry
Glucans - chemistry
Glucans - isolation & purification
Hydroxides - chemistry
Malus - metabolism
Models, Chemical
Models, Statistical
Optimization
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Plant Extracts - chemistry
Potassium Compounds - chemistry
Regression Analysis
Response surface methodology
Surface Properties
Ultrasonic chemistry
Ultrasonics
Ultrasound
Xylans - chemistry
Xylans - isolation & purification
Xyloglucan
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Summary:Ultrasound-assisted extraction was evaluated as a simpler and more effective alternative to conventional extraction method for the isolation of xyloglucan from apple pomace. The apple pomace samples were extracted under indirect sonication in an ultrasound cleaning bath. The ultrasound extraction was compared with the conventional method, on the productions of xyloglucan. It was found that the ultrasound-assisted extraction of xyloglucan was about three times faster than the traditional extraction method. Response surface methodology was employed to study the effect of liquid:solid ratio, KOH concentration and ultrasound-assisted extraction time on the yield of xyloglucan from apple pomace. Regression analysis was performed on the data obtained. The most relevant variable was the quadratic of liquid:solid ratio. The coefficient determination ( R 2) was good for the second-order model. The optimum combination was determined as a liquid:solid ratio of 34.4:1 (v/w), a KOH concentration of 3.3 M and an ultrasound-assisted extraction time of 2.5 h.
ISSN:1350-4177
1873-2828
DOI:10.1016/j.ultsonch.2005.09.007