| Autor: |
Hasmida, M. N., Liza, M. S., Nur Syukriah, A. R., Harisun, Y., Mohd Azizi, C. Y., Fadzilah Adibah, A. M. |
| Předmět: |
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| Zdroj: |
Pertanika Journal of Science & Technology; Jul2015, Vol. 23 Issue 2, p287-295, 9p |
| Abstrakt: |
diseases. The bioactive compounds from the galls can be extracted using various extraction methods. In this study, supercritical carbon dioxide (SC-C02) extraction was used to study the effects of C02 flow rate on the yield, total phenolic content and antioxidant activity of Q. infectoria extract by fixing the pressure and temperature at the highest density (P: 30 MPa, T: 40°C). The results were compared with those acquired from the Soxhlet extraction method. The results showed that the Soxhlet extraction had a higher percentage of extraction yield than SC-CO, extraction. The selectivity of Q. infectoria extracts using SC-C02 extraction was better than the Soxhlet extraction method. Meanwhile, the extraction efficiency using the SC-C02 extraction ranged from 46% to 53%. The SC-C02 extraction also yielded higher total phenolic content than using the Soxhlet extraction method when 2 mL/min of C02 flow rate was applied (203.53 mg GA/g sample). This study also revealed that the extracts from the SC-C02 extraction showed a better radical scavenging activity compared to the Soxhlet extraction when analysed using DPPH (2,2-diphenyl-1-picryl hydrazyl) radical scavenging activity assays. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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