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Open AccessArticle

Antioxidant Content, Antioxidant Activity, and Antibacterial Activity of Five Plants from the Commelinaceae Family

School of Science, Monash University Sunway Campus, Bandar Sunway 46150, Malaysia
Author to whom correspondence should be addressed.
Antioxidants 2014, 3(4), 758-769;
Received: 11 September 2014 / Revised: 27 October 2014 / Accepted: 3 November 2014 / Published: 17 November 2014
(This article belongs to the Special Issue Natural Products as Antioxidants)
Commelinaceae is a family of herbaceous flowering plants with many species used in ethnobotany, particularly in South America. However, thus far reports of their bioactivity are few and far between. The primary aim of this study was to quantify the antioxidant and antibacterial activity of five Commelinaceae methanolic leaf extracts. The antioxidant content was evaluated by the total phenolic content (TPC), total tannin content (TTC), and total flavonoid content (TFC) assays. The antioxidant activities measured were DPPH free radical scavenging (FRS), ferric reducing power (FRP), and ferrous ion chelating (FIC); of the five plants, the methanolic leaf extract of Tradescantia zebrina showed the highest antioxidant content and activity, and exhibited antibacterial activity against six species of Gram-positive and two species of Gram-negative bacteria in a range of 5–10 mg/mL based on the broth microdilution method. View Full-Text
Keywords: Commelinaceae; antioxidant; antibacterial; methanolic extracts Commelinaceae; antioxidant; antibacterial; methanolic extracts
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Tan, J.B.L.; Yap, W.J.; Tan, S.Y.; Lim, Y.Y.; Lee, S.M. Antioxidant Content, Antioxidant Activity, and Antibacterial Activity of Five Plants from the Commelinaceae Family. Antioxidants 2014, 3, 758-769.

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