The effect of extraction temperature on total phenols and antioxidant activity of Gynura procumbens leaf

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Abstract
Pharmacognosy Magazine,2009,5,17,81-85.
Published:December 2009
Type:Research Article
Authors:
Author(s) affiliations:

GA Akowuah1, A Mariam2, JH Chin1
1School of Pharmacy, University College Sedaya International, 56000 Cheras, Kuala Lumpur, Malaysia
2School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia

Abstract:

The effect of extraction temperature on total phenolic contents and free radical scavenging activity of Gynura procumbens leaf extract was investigated. The content of total phenolic were not significantly different (P > 0.5) at the extraction temperature of 40 °C and 50 °C. However, decrease in total phenolic content was observed from extraction temperature of 60 °C and above. The extracts obtained at lower temperature exhibited significant free radical-scavenging activity compared to extraction at higher temperatures.

Keywords:antioxidant, Extraction temperature, Gynura procumbens, Total phenolics

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Keywords
antioxidant
Antioxidant
Extraction temperature
Gynura procumbens
Total phenolics