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Antioxidant activity of different extracts of red pitaya (Hylocereus polyrhizus) seeds.


Adnan, Liana and Osman, Azizah and Abdul Hamid , Azizah (2011) Antioxidant activity of different extracts of red pitaya (Hylocereus polyrhizus) seeds. International Journal of Food Properties, 14 (6). pp. 1171-1181. ISSN 1094-2912; ESSN:1532-2386

Abstract / Synopsis

Antioxidant activity of three different extracts (ethanolic, chloroformic, and hexanic) of red flesh pitaya (Hylocereus polyrhizus) seed using free radical scavenging assay, linoleic acid model system, and ferric thiocyanate (FTC) method was determined. Ethanolic extract inhibit 74.76% of free radicals at 1000 μg/mL, while chloroformic extract gave the highest inhibition using linoleic acid model system (98.90% at 100 μg/mL) and FTC (96.34%) method. Total phenolic and ascorbic acid contents of the seed were 13.56 ± 2.04 and 0.36 ± 0.01 mg/g, respectively, while catechin was the major flavonoid detected. In conclusion, the study showed that both polar and non-polar compounds contribute to the antioxidative activity measured.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
DOI Number: 10.1080/10942911003592787
Publisher: Taylor & Francis
Keywords: Red pitaya seed; Antioxidant activity; Free radical scavenging assay; Linoleic acid model system; Ferric thiocyanate method.
Depositing User: Nur Farahin Ramli
Date Deposited: 10 Oct 2013 17:20
Last Modified: 05 Oct 2015 16:12
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