[feed] Atom [feed] RSS 1.0 [feed] RSS 2.0

Antioxidant and radical-scavenging carbazole alkaloids from the oleoresin of curry leaf (Murraya koenigii Spreng.)

Jagan Mohan Rao, L. and Ramalakshmi, K. and Borse, B. B. and Raghavan, B. (2005) Antioxidant and radical-scavenging carbazole alkaloids from the oleoresin of curry leaf (Murraya koenigii Spreng.). Food Chemistry, 100 (2). pp. 742-747. ISSN 0308-8146

[img] PDF
Food_Chemistry_100_(2007)_742-747.pdf
Restricted to Registered users only

Download (137kB)
Official URL: http://www.sciencedirect.com/science/journal/03088...

Abstract

Oleoresin of curry leaves (Murraya koenigii Spreng.), obtained using acetone, was evaluated for its antioxidant activity using a β-carotene–linoleic acid model system along with the other extracts obtained using methanol, water and volatile oil. The oleoresin showed maximum activity of 83.2% at 100 ppm among all other extractives in comparison to a synthetic antioxidant, namely, butylated hydroxy anisole which exhibited 90.2% activity at the same concentration. The methanol and water extracts showed activities of 16.7% and 11.3%, respectively, at the same concentration. The volatile oil showed negligible (<10%) activity at 100 ppm concentration. Therefore, the oleoresin was fractionated on a silica gel column to obtain five compounds. Among the five, two compounds with maximum antioxidant activity were identified by <sup>1</sup>H and <sup>13</sup>C NMR spectra as mahanimbine and koenigine. Koenigine also showed a high degree of radical-scavenging activity.

Item Type: Article
Additional Information: Copyright of this article belongs to Elsevier Ltd.
Uncontrolled Keywords: Curry leaf; Murraya koenigii Spreng; Rutaceae; Oleoresin; Antioxidant activity; Mahanimbine; Koenigine; Radical-scavenging activity
Subjects: 600 Technology > 08 Food technology > 32 Antioxidants
600 Technology > 08 Food technology > 30 Spices/Condiments > 06 Curry Leaf
Divisions: Plantation Products Spices and Flavour Technology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 07 Apr 2007
Last Modified: 28 Dec 2011 09:27
URI: http://ir.cftri.com/id/eprint/543

Actions (login required)

View Item View Item