Suhandy, Diding and Yulia, Meinilwita (2018) The Current Status of Authentication of Indonesian Specialty Coffees Using UV-Visible Spectroscopy and Chemometrics. In: IC-GU 12 UGSAS-GU, 3-4 Desember 2018, Fakultas Pertanian Universitas Lampung.

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Abstract

Along with the increasing popularity and appreciation of Indonesian specialty coffee and the availability of a very limited supply of specialty coffee has made specialty coffee an expensive commodity compared to commercial or regular coffee. Adulteration of specialty coffee cannot be avoided due to limited production of specialty coffee and increasing of price of specialty coffee. For this reason, it is highly needed to develop technological innovation that is able to ensure the authenticity of specialty coffee and be able to distinguish specialty coffee from regular coffee. In this paper, we summarized the application of UV visible spectroscopy and several chemometrics methods for determination geographic origin of Indonesian specialty coffees. In this research, several specialty coffees from different origin (Gayo,Kintamani, Wamena etc.) were used. All coffee samples were ground using a home-coffee-grinder. We sieved all coffee samples through a nest of U. S. standard sieves (mesh number of 40) on a Meinzer II sieve shaker for 10 minutes to obtain a particle size of 420 µm. The experiments were carried out at room temperature (around 27-29°C). All samples were extracted with distilled water and then filtered. For each samples, 3 mL of extracted aqueous sample then was pipetted into 10 mm cuvettes for spectral data acquisition. The spectral data were acquired using a Genesys 10s UV-visible spectrometer in the range 190-1100 nm. The results demonstrate that UV visible spectroscopy coupled with several chemometrics methods provides sensitive and accurate analytical method to distinguish Indonesian specialty ground roasted coffee.

Item Type: Conference or Workshop Item (Paper)
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Teknik Pertanian
Depositing User: Dr. Diding Suhandy
Date Deposited: 23 May 2019 07:18
Last Modified: 23 May 2019 07:18
URI: http://repository.lppm.unila.ac.id/id/eprint/13118

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