Abstract

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.

Details

Title
Spectroscopic Study of Green Tea (Camellia sinensis) Leaves Extraction
Author
Marzuki, A 1 ; Suryanti, V 2 ; Virgynia, A 1 

1  Department of Physics, Sebelas Maret University, Surakarta 57126, Indonesia 
2  Department of Chemistry, Sebelas Maret University, Surakarta 57126, Indonesia 
Publication year
2017
Publication date
May 2017
Publisher
IOP Publishing
ISSN
17578981
e-ISSN
1757899X
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/1757-899X/193/1/012049
ProQuest document ID
2564603433
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.