Research Article Open Access

Determination and Evaluation of Antioxidative Activity in Red Dragon Fruit (Hylocereus undatus) and Green Kiwi Fruit (Actinidia deliciosa)

Normala Halimoon1 and Mardhiah Hayati Abdul Hasan2
  • 1 Department of Environmental Sciences, Faculty of Environmental Studies, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
  • 2 Department of Environmental Sciences, Faculty of Biotechnology and Life Sciences, University Industry Selangor, 40000 Shah Alam, Selangor, Malaysia

Abstract

Problem statement: Dragon fruit or pitahaya (Hylocereus undatus), is believed to be a healthy source of vitamins, fiber and antioxidants, especially the red-fleshed varieties which contain lycopene. Approach:Compared to green kiwi fruit (Actinidia deliciosa), which already known contain high antioxidant activity. Results:The antioxidant capacity of Hylocereus undatus (H. undatus) and Actinidia deliciosa (A. deliciosa) in three different solvent extraction; ethanol, methanol and aqueous, was estimated by DPPH free radical scavenging assay. The inhibition of free radical by A. deliciosa is almost 90% compared with H. undatus which only 60-10% in different solvents. Additionally, their total phenolic contents were analyzed by folin-ciocalteau method. The result showed that A. deliciosa (533.70 mg L-1 in ethanol, 460.87 mg L-1 in methanol and 420.652 mg L-1 in distilled water) seemed to be better sources of antioxidant compounds then H. undatus (179.35 mg L-1 in ethanol, 160.87 mg L-1 in methanol and 157.61 in distilled water). Conclusion: When compared between the three different solvent, extract in ethanol shown the most highly antioxidant content followed by methanol and water. The experiment showed the potential of dragon fruit and kiwi extracts high rich in antioxidant which can scavenge free radical in human body. Further study on isolation of individual antioxidant in both extracts can be providing for commercialize the extracts in jus form.

American Journal of Applied Sciences
Volume 7 No. 11, 2010, 1432-1438

DOI: https://doi.org/10.3844/ajassp.2010.1432.1438

Submitted On: 5 October 2010 Published On: 8 November 2010

How to Cite: Halimoon, N. & Hasan, M. H. A. (2010). Determination and Evaluation of Antioxidative Activity in Red Dragon Fruit (Hylocereus undatus) and Green Kiwi Fruit (Actinidia deliciosa). American Journal of Applied Sciences, 7(11), 1432-1438. https://doi.org/10.3844/ajassp.2010.1432.1438

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Keywords

  • Phenolic contents
  • Hylocereus undatus
  • Actinidia deliciosa
  • distilled water
  • radical scavenging
  • gallic acid
  • Acid Equivalent Antioxidant Capacity (AEAC)
  • dragon fruit
  • different solvent
  • gallic acid equivalent
  • Total Antioxidant Capacity (TAC)
  • antioxidative activity
  • Gallic Acid Equivalent (GAE)
  • DPPH
  • Lipid-Soluble Antioxidants (LSAs)