Title of article :
Effect of different extraction techniques on total phenolic content and antioxidant activity of Quercus infectoria galls
Author/Authors :
Hasmida, M. N. Universiti Teknologi Malaysia - Centre of Lipid Engineering and Applied Research, Faculty of Chemical Engineering, Malaysia , Nur Syukriah, A. R. Universiti Teknologi Malaysia - Faculty of Chemical Engineering - Department of Bioprocess Engineering, Malaysia , Liza, M. S. Universiti Teknologi Malaysia - Centre of Lipid Engineering and Applied Research, Faculty of Chemical Engineering - Department of Bioprocess Engineering, Malaysia , Mohd Azizi, C. Y. Universiti Teknologi Malaysia - Centre of Lipid Engineering and Applied Research, Faculty of Chemical Engineering, Malaysia
Abstract :
In this work, the bioactive compounds which was obtained by extracting Quercus infectoria via two extraction methods; Soxhlet and supercritical carbon dioxide (SC-CO2) extraction, were analyzed using total phenolic content and DPPH (2,2-diphenyl-1-picryl hydrazyl) free radical scavenging activity analysis. The aim of this study is to compare the total phenolic content and antioxidant activity of Quercus infectoria extract acquired from SC-CO2 extraction with those from Soxhlet extraction method. The results showed the used of SC-CO2 extraction give the lowest extraction yield as compared to Soxhlet extraction. The selectivity of Q. infectoria extracts using SC-CO2 extraction was better which in contrast with Soxhlet extraction method since it shows higher total phenolic content (143.75 ± 1.06 mg GAE/g sample). This study also revealed that the extracts from both extraction methods can posses’ antioxidant activity and comparable to those obtained from commercial antioxidant.
Keywords :
Q. infectoria , SC , CO2 , Soxhlet , Total phenolic content , Antioxidant activity , Extraction method
Journal title :
International Food Research Journal
Journal title :
International Food Research Journal
