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

The flavones and anthocyanins present in the breathtakingly beautiful passionflower are identified based on the ESI mass spectrum of the methanolic extract in ethyl acetate and aqueous fractions and their UV-Vis absorption spectra. The spectral characteristics of the fluorophores and their fluorescence lifetimes are also reported. AbstractRich 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.

Source: Photochemistry and Photobiology - December 27, 2023 Category: Science Authors: Yogita Silori, Sakshi Chawla, Arijit Kumar De, Rajendra P. Shirke, Jagdeep Grover, S. S. V. Ramasastry, Narayanasami Sathyamurthy Tags: SPECIAL ISSUE RESEARCH ARTICLE Source Type: research