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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

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Abstract

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.

Item Type:Article
Keyword:Red pitaya seed; Antioxidant activity; Free radical scavenging assay; Linoleic acid model system; Ferric thiocyanate method.
Faculty or Institute:Faculty of Food Science and Technology
Publisher:Taylor & Francis
DOI Number:10.1080/10942911003592787
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/10942911003592787
ID Code:24169
Deposited By: Nur Farahin Ramli
Deposited On:10 Oct 2013 17:20
Last Modified:05 Oct 2015 16:12

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