NDLI: Total Phenolic Content, Total Flavonoid Content and Radical Scavenging Activity from Zingiber zerumbet Rhizome using Subcritical Water Extraction

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Total Phenolic Content, Total Flavonoid Content and Radical Scavenging Activity from Zingiber zerumbet Rhizome using Subcritical Water Extraction

Content Provider	Semantic Scholar
Author	Mokhtar, Nurizzati Nordin, Mariam Firdhaus Mad Morad, Noor Azian
Copyright Year	2018
Abstract	Subcritical water extraction (SWE) is an alternative technique that implement water as a solvent. The objective of this work was to compare the efficiency of SWE in temperature range from 100oC to 180oC at extraction times ranging from 5 to 25 minutes with an ethanolic soxhlet extraction in terms of total phenolic content (TPC), total flavonoid content (TFC) and radical scavenging activity (RSA) from Zingiber zerumbet. Results showed the highest TPC were obtained at 180oC and 25 min (19.88 mg GAE/g dry sample). The TFC is observed to be slightly fluctuated with time at the respective temperature. The RSA reached the maximum of 83.9 % inhibition at 180oC and 10 minutes of SWE. A direct linear correlation shows the strong correlation were observed between TPC and RSA(R2=0.910) compared to moderate correlation (R2=0.785) perceived in TFC. It shows that using SWE, phenolic content in Zingiber zerumbet more contributed to its radical scavenging activity compared to its flavonoid content. In comparison to soxhlet extraction, SWE process for Zingiber zerumbet extract is favorable for TPC and antioxidant properties. However the values for TFC in general is lower compared to soxhlet extraction. SWE is a potential alternative extraction process that should be further explored.
Starting Page	1421
Ending Page	1429
Page Count	9
File Format	PDF HTM / HTML
DOI	10.5829/ije.2018.31.08b.34
Volume Number	31
Alternate Webpage(s)	http://www.ije.ir/article_73263_a2c983d8d7e9dd24f79c6eb632e9a19e.pdf
Alternate Webpage(s)	https://doi.org/10.5829/ije.2018.31.08b.34
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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