Abstract
Cymbopogon citratus, better known as lemongrass, is a plant commonly used for culinary purposes. It is known to contain the compound citronellal, which is responsible for the lemon-scent of many of the plants of the genus Cymbopogon. A chloroform extract of Cymbopogon citratus was screened to determine its free radical scavenging activities. Three different methods were used to test the antioxidant activity of the extract, including FRAP assay (Ferric reducing antioxidant potential), DPPH radical scavenging assay (1,1-diphenyl-2-picryl hydrazyl radical reducing power methods), and β-carotene bleaching assay. Cymbopogon citratus showed low radical scavenging activities compared to ascorbic acid, gallic acid and quercetin. The results obtained suggest that Cymbopogon citratus is best appreciated for its refreshing aroma and delicate taste, but has little to offer as a source of antioxidants.
Highlights
Plants of the genus Cymbopogon are commonly used in Asian cooking and the essential oils are valued for their aromatic properties
The present study aims to determine the antioxidant activity of citronellal and a crude extract of Cymbopogon citratus using in vitro techniques which have been developed to
The FRAP assay was employed to estimate the antioxidant capacity of the samples in vitro
Summary
Plants of the genus Cymbopogon are commonly used in Asian cooking and the essential oils are valued for their aromatic properties. Citronellal is one of the compounds responsible for the aroma associated with Cymbopogon and is known for its ability to repel insects [1]. The present study aims to determine the antioxidant activity of citronellal and a crude extract of Cymbopogon citratus using in vitro techniques which have been developed to. (2014) Antioxidant Activity Determination of Citronellal and Crude Extracts of Cymbopogon citratus by 3 Different Methods. Several methods are performed to accurately estimate the antioxidant potential of a sample as it should cover the mechanisms of different reactions [2]. Citronellal and an extract of Cymbopogon citratus were analysed using three different assays to accommodate different antioxidant mechanisms
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