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Antioxidant properties of selected non-leafy vegetables


Ismail, Amin and Tiong, Ngee Wen and Tan, Seok Tyug and Azlan, Azrina (2009) Antioxidant properties of selected non-leafy vegetables. Nutrition and Food Science, 39 (2). pp. 176-180. ISSN 0034-6659


Purpose: The purpose of this paper is to determine the antioxidant properties (capacity and component) of four non-leafy vegetables. The correlation between the antioxidant capacity and its components of the studied vegetables was also assessed. Design/methodology/approach: Winged beans, also known as four-angled bean (Psophocarpus tetragonolobus), French bean (Phaseolus vulgaris), string bean (Vigna sinensis) and snow pea (Pisum sativum) were selected as samples from among the common non-leafy vegetables consumed by Malaysians. These fresh vegetables were lyophilised and ground and their ethanolic extracts were prepared for antioxidant capacity assays and total phenolic, β-carotene and ascorbic acid contents. Findings: Among the vegetables, string beans showed the highest antioxidant capacity compared to the other vegetables studied (p < 0.05). The total phenolic, ascorbic acid and -carotene contents of snow peas were significantly higher (p < 0.05) than the other vegetables. There was a significant positive correlation between scavenging activity and antioxidant components studied. On the other hand, a negative correlation was found between antioxidant activity and its components of the studied vegetables. Originality/value: Previous reports have indicated that vegetables contain high levels of antioxidants. However, data on antioxidant capacity of these non-leafy vegetables are still lacking. This research paper shows the non-leafy vegetables studied is a promising source of antioxidants with good antioxidant capacity. Beside that, along with the studied antioxidant components, other compounds in these vegetables could also contribute to their antioxidant capacity.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Medicine and Health Science
DOI Number: https://doi.org/10.1108/00346650910943280
Publisher: Emerald Group Publishing
Keywords: Malaysia; Vegetables
Depositing User: Raja Norazlinda Raja Azenam
Date Deposited: 05 Dec 2014 01:43
Last Modified: 30 Nov 2016 07:01
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1108/00346650910943280
URI: http://psasir.upm.edu.my/id/eprint/13195
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