Journal
INTERNATIONAL JOURNAL OF FOOD PROPERTIES
Volume 17, Issue 8, Pages 1763-1778Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10942912.2012.724756
Keywords
Principal component analysis; Integrated antioxidant activity index; Phenolics; Wild edible plants; Flavonoids
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Funding
- Malaysian Ministry of Higher Education
- Universiti Malaysia Sabah (UMS)
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The aim of this study was to determine the antioxidant activity, total phenolics, and total flavonoid content of six freeze dried wild edible plants, namely Helminthostachys zeylanica, Schismatoglottis ahmadii, Heckeria umbelatum, Lasia spinosa, Gonostegia hirta, and Aniseia martinicense from Sabah, Malaysia. All leaves had higher levels of total phenolics, flavonoids, and antioxidant activity than stems and flowers for all extracts, except the stem of Gonostegia hirta. Integrated antioxidant activity index showed the leaf of Heckeria umbellatum and Aniseia martinicense possessed the highest antioxidant activity for all extracts. Principal component analysis identified that the phenolic group present in the hot water and methanolic extracts was the main factor for higher values observed in oxygen radical absorbance capacity and ferric reducing antioxidant power assays. These wild edible plants are good natural sources of antioxidants to be incorporated as functional ingredients in the food industry.
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