The Classification of Ground Roasted Decaffeinated Coffee Using UV-VIS Spectroscopy and SIMCA Method

2nd International Conference on Agricultural Engineering for Sustainable Agricultural Production

Yulia, M.^1 ; Asnaning, A.R.^1 ; Suhandy, D.^2

Department of Agricultural Technology, Lampung State Polytechnic, Indonesia^1

Department of Agricultural Engineering, University of Lampung, Indonesia^2

关键词: GENESYS;    Multi variate analysis;    Roasted coffee;    Sensitivity and specificity;    SIMCA models;    Soft independent modeling of class analogies;    UV-vis spectrometer;    UV-vis spectroscopy;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/147/1/012010/pdf
DOI  :  10.1088/1755-1315/147/1/012010

来源: IOP

【 摘 要 】

In this work, an investigation on the classification between decaffeinated and non- decaffeinated coffee samples using UV-VIS spectroscopy and SIMCA method was investigated. Total 200 samples of ground roasted coffee were used (100 samples for decaffeinated coffee and 100 samples for non-decaffeinated coffee). After extraction and dilution, the spectra of coffee samples solution were acquired using a UV-VIS spectrometer (Genesys™ 10S UV-VIS, Thermo Scientific, USA) in the range of 190-1100 nm. The multivariate analyses of the spectra were performed using principal component analysis (PCA) and soft independent modeling of class analogy (SIMCA). The SIMCA model showed that the classification between decaffeinated and non-decaffeinated coffee samples was detected with 100% sensitivity and specificity.