Open AccessExtraction of Dyes from Sunflower Petal and Their Fourier Transform Infrared Characterization
Author(s) -
Oyeleke Gboyega Oluwaseun,
Ishola Abdul Dimeji,
Salam Mudasiru Adebisi,
Ajao Funmilola Dupeola,
Adebisi Ajisola Agnes
Publication year - 2022
Publication title -
organic polymer material research
Language(s) - English
Resource type - Journals
ISSN - 2661-3875
DOI - 10.30564/opmr.v3i1.2586
Subject(s) - fourier transform infrared spectroscopy , extraction (chemistry) , aqueous solution , chemistry , sunflower , helianthus annuus , methanol , petal , solvent , nuclear chemistry , infrared , chromatography , botany , organic chemistry , horticulture , chemical engineering , biology , physics , optics , engineering
Three solvents of different polarities (water, methanol and 1% NaOHsolution) were used to extract dyes that produced different shades fromdried sunflower (Helianthus annuus) petal. The extraction proceduresusing different solvent types were carried out separately. The dye extractswere thereafter subjected to Fourier Transform Infrared Spectrometry(FT-IR) analysis for characterization in terms of functional groups. Theintensities of the extracted dyes on the shade of colours obtained on piecesof cotton material varied from yellow in methanolic extract to light yellowin aqueous and black in 1% NaOH solution extracts. The results obtainedfrom the FT-IR analysis revealed the presence of several useful functionalgroups such as N-H, C=H, O-H and C=O in the extracts.