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Identification of previously unreported pigments among carotenoids and anthocyanins in floral petals of Delonix regia (Hook.) Raf.

Jyothi M, Veigas and Divya, P. and Bhagyalakshmi, N. (2012) Identification of previously unreported pigments among carotenoids and anthocyanins in floral petals of Delonix regia (Hook.) Raf. Food Research International, 47 . pp. 116-123. ISSN 0963-9969

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Abstract

Carotenoids and anthocyanins from floral petals of Delonix regia (Fabaceae) were isolated and characterized. Astaxanthin, a ketocarotenoid and anthocyanins — Peonidin-3-O-glucoside and Petunidin-3-o-acetyl-glucoside were newly identified by HPLC-MS. On 100 g dry weight basis, anthocyanin content was 830 mg in fresh and 580 mg in oven dried petals and 30 mg of β-carotene content in a total of 69 mg of carotenoids. This study has demonstrated that floral petals of D. regia are rich in unusual combination of biologically active carotenoids and anthocyanins, particularly cyanidin-3-O-rutinoside (800 mg/100 g DW), holding a great promise for food and pharmaceutical applications. Since astaxanthin is rarely found in higher plants, D. regia appears interesting for gene discovery for understanding of ketocarotenoid biosynthesis in higher plants.

Item Type: Article
Uncontrolled Keywords: Astaxanthin, β-carotene, Keto-carotenoid Peonidin-3-O-glucoside, Petunidin-3-O-acetyl-glucoside
Subjects: 500 Natural Sciences and Mathematics > 10 Plants > 06 Trees And Shrubs
500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 14 Carotenoid Chemistry
Divisions: Plant Cell Biotechnology
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 23 Apr 2012 08:46
Last Modified: 23 Apr 2012 08:46
URI: http://ir.cftri.com/id/eprint/10675

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