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Optimization of ultrasound-assisted extraction of polyphenols from spruce wood bark.
Journal article

Optimization of ultrasound-assisted extraction of polyphenols from spruce wood bark.

  • Ghitescu RE "Gheorghe Asachi" Technical University, Faculty of Chemical Engineering and Environmental Protection, 71 A Mangeron Blvd., 700050 Iasi, Romania; Laboratory for Protection and Physiology, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, St. Gallen 9014, Switzerland. Electronic address: ghitescu.roxana@yahoo.com.
  • Volf I "Gheorghe Asachi" Technical University, Faculty of Chemical Engineering and Environmental Protection, 71 A Mangeron Blvd., 700050 Iasi, Romania.
  • Carausu C "Gheorghe Asachi" Technical University, Department of Machine Manufacturing Technology, 71 A Mangeron Blvd., 700050 Iasi, Romania.
  • Bühlmann AM Laboratory for Protection and Physiology, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, St. Gallen 9014, Switzerland.
  • Gilca IA "Gheorghe Asachi" Technical University, Faculty of Chemical Engineering and Environmental Protection, 71 A Mangeron Blvd., 700050 Iasi, Romania.
  • Popa VI "Gheorghe Asachi" Technical University, Faculty of Chemical Engineering and Environmental Protection, 71 A Mangeron Blvd., 700050 Iasi, Romania.
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  • 2014-08-19
Published in:
  • Ultrasonics sonochemistry. - 2015
ANOVA
Phenolic compounds
Spruce bark
Ultrasound extraction
Chemical Fractionation
Ethanol
Models, Theoretical
Picea
Polyphenols
Solvents
Temperature
Time Factors
Ultrasonics
Wood
English Here we describe the ultrasound-assisted extraction of the phenolic compounds from spruce wood bark and present a straight-forward experimental planning method, allowing the optimisation of the process. The effect of ethanol concentration, temperature and extraction time were evaluated through a 3(2)·2 experimental planning. The efficiency of the extraction process was appreciated based on factorial ANOVA results. The maximum extraction yield of total polyphenols (13.232mg gallic acid equivalents (GAE)/g of spruce bark tested) was obtained using a process time of 60min, an extraction temperature of 54°C and a concentration of ethanol of 70% respectively. These results indicate that an important quantity of bioactive compounds can be extracted from spruce wood bark by ultrasound assisted extraction technology.
Language
  • English
Open access status
hybrid
Identifiers
Persistent URL
https://folia.unifr.ch/global/documents/292017
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