Characterisation and determination of in vitro antioxidant potential of betalains from talinum triangulare (Jacq.) willd.

TitleCharacterisation and determination of in vitro antioxidant potential of betalains from talinum triangulare (Jacq.) willd.
Publication TypeJournal Article
Year of Publication2013
AuthorsSwarna, J, Lokeswari, TS, Smita, M, Ravindhran, R
JournalFood Chemistry
Volume141
Issue4
Pagination4382-4390
Date PublishedDEC
ISSN0308-8146
KeywordsAntioxidant, Betalains, HPLC-MS, Portulacaceae, Waterleaf
Abstract

Talinum triangulare (Jacq.) Willd is an erect, succulent, perennial herb belonging to the family Portulacaceae. Under extreme environmental conditions, the plant produces betalain pigments which get accumulated in the stem region. Hence, in the present study, the betaxanthin and betacyanin patterns from different samples of T. triangulare have been investigated by applying high-performance liquid chromatography photo-diode array detection (HPLC-PDA) coupled with positive ion electro-spray mass spectrometry. Two betacyanins and two betaxanthins were identified in aqueous methanolic extract of flower, stem and leaf. Betanin, isobetanin, immonium conjugates of betalamic acid with dopamine and tyrosine were elucidated. The total betalain content was estimated by photometric analysis. In vitro antioxidant activity for the betalain extract determined by various methods revealed potent scavenging ability. The current work may possibly be considered beneficial in utilisation of the plant T. triangulare as a natural colourant in food and beverage industries. (C) 2013 Elsevier Ltd. All rights reserved.

DOI10.1016/j.foodchem.2013.06.108
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)3.259
Divison category: 
Polymer Science & Engineering