Karya
Judul/Title Utilization of UV-visible and FTIR spectroscopy coupled with chemometrics for differentiation of Indonesian tea: an exploratory study
Penulis/Author MITSALINA FILDZAH ARIFAH (1); Dr. apt. Agustina Ari Murti Budi Hastuti, S.Farm., M.Sc. (2); Prof. Dr. Abdul Rohman, S.F., M.Si., Apt. (3)
Tanggal/Date 29 2022
Kata Kunci/Keyword
Abstrak/Abstract Ultraviolet (UV)-visible and Fourier-transformed infrared (FTIR) spectroscopy are two of the most popular and readily available laboratory instruments. Fingerprinting analysis of the UV-visible and FTIR spectra has been applied for food classification and authentication studies. In this study, the UV-visible and FTIR spectra of brewed tea, and their data fusion data sets, were used to build models for the classification of tea based on tea types and origins. The study included black and green tea samples from several provinces in Sumatra and Java Islands (Indonesia). Chemometric models of principal component analysis (PCA), k-nearest neighbor (kNN), and logistic regression were developed for classification purposes. All PCA models were able to well-separate the tea groups. kNN and logistic regression models based on UV-visible spectra successfully classified green and black tea with >0.8 classification accuracy. The kNN model of FTIR spectra had good accuracy (0.903) for classifying tea based on its origin. ReliefF algorithm was employed to select the best features among the data fusion data sets of UV-visible and FTIR spectra. The data fusion data sets of UV-visible and FTIR spectra demonstrated good separation of tea types and origins with a high area under the ROC curve (>0.8) and moderate accuracy (0.548). Therefore, UV-visible and FTIR spectroscopy may provide complementary information for tea classification based on tea types and origins.
Rumpun Ilmu Hidrometeorologi Departemen Geografi Pembangunan
Bahasa Asli/Original Language English
Level Internasional
Status
Dokumen Karya
No Judul Tipe Dokumen Aksi
1Utilization of UV-visible and FTIR spectroscopy coupled with chemometrics for differentiation of Indonesian tea - an exploratory study.pdf[PAK] Full Dokumen
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3Scopus ranking - Indonesian Journal of Pharmacy.pdfDokumen Pendukung Karya Ilmiah (Hibah, Publikasi, Penelitian, Pengabdian)