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Journal : Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)

APLIKASI UV SPECTROSCOPY DAN METODE SIMCA UNTUK KLASIFIKASI KOPI LIBERIKA TUNGKAL JAMBI DAN KOPI LIBERIKA PROBOLINGGO Sapto Kuncoro; Meinilwita Yulia; Diding Suhandy
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 10, No 1 (2021): Maret
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v10i1.49-56

Abstract

Tungkal Composite Jambi Liberika Coffee is one of the top qualities of Indonesian coffees that has received a geographic indication certificate (IGs). With its limited production and high prices, currently Tungkal Jambi Liberika coffee is one of the coffees that is prone to being counterfeited. The counterfeiting of Tungkal Jambi Liberika coffee is increasingly difficult to identify, especially in the form of ground roasted coffee. This study evaluated the potential application of UV spectroscopy technology to classify Tungkal Jambi Liberika coffee (with geographic indications) and normal Probolinggo Liberika coffee (non- geographic indications). A total of 120 samples for each Liberika coffee were prepared weighing 1 gram for each sample. Spectra measurements were carried out in the form of a coffee solution. Spectral data were taken using a UV-visible spectrometer with a wavelength interval of 200-400 nm (Genesys™ 10S UV-Vis, Thermo Scientific, USA). By using the average transformed spectra in the 250-350 nm interval, the differences between the two types of Liberika coffee can be clearly seen, especially at some wavelength peaks, namely 270 nm, 300 nm, 315 nm and 346 nm. The classification accuracy obtained for the SIMCA classification is 100% for both Tungkal Jambi Liberika and Probolinggo Liberika coffee. Keywords:   authentication, classification accuracy, Tungkal Jambi Liberika coffee, SIMCA, UV Spectroscopy 
Drying Vanilla Using A Hybrid Dryer Warji Warji; Tamrin Tamrin; Sapto Kuncoro; Budianto Lanya; Hani Muzaqi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.212-222

Abstract

Vanilla (Vanilla planifolia Andrew) is a plant that has high economic value; the plant is oriented for export. Postharvest handling is necessary to produce good quality vanilla; One of them is the drying process. This study aims to measure the drying time of vanilla, measure the decrease in moisture content, and analyze the efficiency of drying wet vanilla using a rack-type hybrid dryer. The research was conducted with three treatments, namely: drying using solar energy, drying using electrical energy, and drying using solar energy and electrical energy (hybrid). Based on the results of the study, it was found that drying using solar energy, drying using electrical energy, and drying using solar energy and electrical energy (hybrid) took 15 days, 17 days, and 13 days, respectively. The initial moisture content of drying is about 91.25% which decreases to about 32.44% at the end of drying. The efficiency of the three treatments was 6.39%, 1.58%, and 0.92%, respectively. Keywords: Drying, Hybrid postharvest, Vanilla