Spectroscopic Study of Green Tea (Camellia sinensis) Leaves Extraction

This paper reports the analysis of UV-VIS-NIR absorption spectra of different concentrations of green tea (Camellia sinensis) leaf extract in two different solvent systems (chloroform and ethyl acetate). In those solvents, two different peaks characterizing green tea are observed at different wavele...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 193; no. 1; pp. 12049 - 12052
Main Authors Marzuki, A, Suryanti, V, Virgynia, A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2017
Subjects
Absorption spectra
Chloroform
Electromagnetic absorption
Ethyl acetate
Green tea
Solvents
Tea
Wavelengths
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Summary:This paper reports the analysis of UV-VIS-NIR absorption spectra of different concentrations of green tea (Camellia sinensis) leaf extract in two different solvent systems (chloroform and ethyl acetate). In those solvents, two different peaks characterizing green tea are observed at different wavelengths, namely 296 nm and 329 nm (extracted in chloroform) and 391 nm and 534 nm (extracted in ethyl acetate). We then investigated the absorption spectra change as function of green tea concentration in both solvents. We found that light absorption increases linearly with the increase of green tea concentration. Different wavelengths, however, respond this change differently. However, the way it changes is wavelength dependence.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/193/1/012049