In vitro Investigation of Antioxidant Properties of Turnip (Brassica Rapa Subsp. Rapa)

Abstract

Turnip (Brassica rapa subsp. Rapa), which grows in many regions of Western Asia and Europe, is a seasonal and herbaceous plant belonging to the cruciferous family. As a result of the studies, it has been revealed that the turnip juice has antioxidant properties. However, no previous study has been carried out on the antioxidant activity of turnip root as a source. In this study, the activities of turnip, which were subjected to Soxhlet extraction with solvents with different polarities, were compared with standards known to have antioxidant properties and thus, antioxidant activity of the extracts was tried to be determined. The radical scavenging effects, total antioxidant activities, reducing power, metal chelating capacity, β-carotene bleaching power of water, ethanol and ethyl acetate extracts in different concentrations were studied. In addition, proline determination, total phenolic compound amount, total anthocyanin and total carotenoid amounts were measured in all extracts. As a result of the studies, it was found that the antioxidant activity of the turnip plant studied in the form of root was higher than the standard antioxidants in some parameters studied, and the activity values were interpreted by comparing with other plants in the same species.

Keywords

• Turnip
• Antioxidant activity
• free radicals
• Soxhlet extraction
• Brassica
• natural product

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