Preprint / Version 1

Antioxidant activities of traditional plants in Sri Lanka by DPPH free radical-scavenging assay

Authors

  • Kotaro Hara aALBION Co. Ltd., 1-7-10 Ginza, Chuo-ku, Tokyo 104-0061, Japan
  • Takao Someya aALBION Co. Ltd., 1-7-10 Ginza, Chuo-ku, Tokyo 104-0061, Japan
  • Katsura Sano aALBION Co. Ltd., 1-7-10 Ginza, Chuo-ku, Tokyo 104-0061, Japan
  • Yoshimasa Sagane bDepartment of food and Cosmetic Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri, Hokkaido 099-2493, Japan
  • Toshihiro Watanabe bDepartment of food and Cosmetic Science, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri, Hokkaido 099-2493, Japan
  • RGS Wijesekara cDepartment of Aquaculture and Fisheries, Faculty of Livestock, Fisheries and Nutrition, Wayamba University of Sri Lanka, Makandura, Gonawila 60170, Sri Lanka

Keywords:

Antioxidative activity, DPPH radical-scavenging assay, Traditional plant, Medical herb

Abstract

This article describes free radical-scavenging activities of extracts of several plants harvested in Sri Lanka through the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. These plants have traditionally been used in the indigenous systems of medicine in Sri Lanka, such as Ayurveda, as described below. (English name, “local name in Sri Lanka,” (scientific name)). bougainvillea plant, “bouganvilla,” (Bougainvillea grabla), purple fruited pea eggplant,”welthibbatu,” (Solanum trilobatum) [1], country borage plant, “kapparawalliya,” (Plectranthus amboinicus) [2], malabar nut plant, “adhatoda,” (Justicia adhatoda) [3], long pepper plant,”thippili,” (Piper longum) [4], holy basil plant, “maduruthala,” (Ocimum tenuiflorum) [5], air plant, “akkapana,” (Kalanchoe pinnata) [6], plumed cockscomb plant, “kiri-henda,” (Celosia argentea) [7], neem plant,”kohomba,” (Azadirachta indica) [8], balipoovu plant, “polpala,” (Aerva lanata) [9], balloon-vine plant, “wel penera,” (Cardiospermum halicacabum) [10], emblic myrobalan plant, “nelli,” (Phyllanthus emblica) [11], indian copperleaf plant, “kuppameniya,” (Acalypha indica) [12], spreading hogweed plant, “pita sudu sarana,” (Boerhavia diffusa) [13], curry leaf plant, “karapincha,” (Murraya koenigii) [14], indian pennywort plant, “gotukola,” (Centera asiatica) [15], jewish plum plant, “ambarella,”(Spondias dulcis) [16]. Keywords: Antioxidative activity, DPPH radical-scavenging assay, Traditional plant, Medical herb

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