Effects of process conditions on the ultrasonic extraction of phenolics scavenger from Curcuma caesia rhizome
Medicinal properties of Malaysian Curcuma caesia have not been studied extensively, even though it has been used as a traditional remedy. This study examined the effects of various extraction temperatures (30, 40, 50, 60, 70o C) using a high frequency (40 kHz) ultrasonic extraction method, time...
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| Pengarang-pengarang Utama: | , , , , |
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| Format: | Artikel |
| Bahasa: | English |
| Diterbitkan: |
2017
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| Subjek-subjek: | |
| Capaian Atas Talian: | http://irep.iium.edu.my/62449/ http://irep.iium.edu.my/62449/ http://irep.iium.edu.my/62449/1/%2825%29.pdf |
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| Ringkasan: | Medicinal properties of Malaysian Curcuma caesia have not been studied extensively, even
though it has been used as a traditional remedy. This study examined the effects of various
extraction temperatures (30, 40, 50, 60, 70o
C) using a high frequency (40 kHz) ultrasonic
extraction method, time (30,60,90 and 120 minutes), pH (1,2,3,4,5,6,7,8,9,10) on the extraction
yield of total phenolics and DPPH (2,2-diphenyl-1-picrylhydrazyl) scavenging activities from
C. caesia rhizome. Extraction was most efficient at pH 6.0, while the extraction time of 30
minutes and temperature of 60o
C was the best in terms of total phenolics content and DPPH
scavenging activity. This study is important due to its ability to improve extraction of total
phenolics compound using ultrasonic extraction method while maintaining a relatively high
DPPH scavenging activity of the extracts. |
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