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• Antioxidant Activity and Polyphenoloxidase Inhibitory Activity of Edible Plants in Viet Nam

  Nguyen Xuan Duy, Ho Ba Vuong

  Date Received: 24-04-2013 / Date Accepted: 12-06-2013 / Date Published: 13-06-2025

   Abstract PDF (VIETNAMESE)

  Six edible plants in Vietnam were selected to investigate antioxidant and polyphenoloxidase inhibitory activity, including Camelliasinensis, Piper betle, Psidium guajava, Ipomoea batatas, Piper lolot, and Morinda citrifolia L.. Antioxidative activities were evaluated by DPPH free radical scavenging capacity, reducing power capacity and inhibitory of lipid oxidation in oil-in-water model. In addition, polyphenol content of six edible plants were also determined. Research results indicated that all of plants had antioxidative activity via antioxidant tests and its antioxidant ability depended on species. Polyphenol contents were different from species to species. Their values varied from 11.73 to 188.19 mg GAE/g db. Polyphenoloxidase (PPO) inhibitory activity differed with species. Psidium guajava leaf had the highest activity of PPO inhibitory (64.77%), followed by Piper betle leaf (61.66%), Camelliasinensis leaf (43.87%), Piper lolot leaf (25.59%), Morinda citrifolia L. leaf (21.93%), and Ipomoea batatas leaf (21.42%).

  DOI: https://doi.org/10.31817/tckhnnvn.2013.11.3.