Spectral characteristics of the flavones and anthocyanins present in passionflower (Passiflora incarnata)

Yogita Silori; Sakshi Chawla; Arijit Kumar De; Rajendra P Shirke; Jagdeep Grover; S S V Ramasastry; Narayanasami Sathyamurthy

doi:10.1111/php.13893

Spectral characteristics of the flavones and anthocyanins present in passionflower (Passiflora incarnata)

Photochem Photobiol. 2023 Dec 26. doi: 10.1111/php.13893. Online ahead of print.

Authors

Yogita Silori¹, Sakshi Chawla¹, Arijit Kumar De¹, Rajendra P Shirke¹, Jagdeep Grover¹, S S V Ramasastry¹, Narayanasami Sathyamurthy¹

Affiliation

¹ Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, SAS Nagar, Punjab, India.

PMID: 38148662
DOI: 10.1111/php.13893

Abstract

Rich in antioxidants with a variety of flavones and anthocyanins, passionflower/fruit has been extensively used in food, beverage, medicinal, and natural dyes industries. The individual components present in passionflower are identified by extracting them in methanol, partitioning them between ethyl acetate and aqueous layers, and recording their ESI mass spectrometric data. The steady-state absorption and fluorescence spectra of the extract in methanol and dimethyl sulfoxide are recorded and the lifetime of the fluorescing species is reported. The pH dependence of the absorption spectrum confirms the presence of the anthocyanins.

Keywords: Passiflora incarnata; J-/H-aggregates; absorption spectra; anthocyanins; cyanidin-3-glucoside; flavones; fluorescence spectra; inner filter effect; orientin; passionflower.