Judul: Senyawa Kimia Penciri Jernang untuk Pembaruan Parameter Standar Nasional Indonesia
Abstrak: Dragon’s blood, a resin exudated from rattan (Daemonorops draco) fruits has many benefits so that prices and demand are always high. The National Standardization Agency has issued Indonesia National Standard (SNI) for dragon’s blood based on physical characteristics and visual parameters. Three qualities of this commodity from the highest to the low quality are “super” , A , and B. However, these parameters are prone to be manipulated by traders to add weight and purity of the resin. In this study, it was discovered that all SNI parameters are not always correlated in determining the classification of dragon’s blood. Analysis by ultraviolet-visible spectrophotometer at a wavelength of 473.5 nm showed that the classification according to SNI was positively correlated with the resin content and the absorbance. A quantitative analytical method proposed for SNI revision is extraction through maceration using acetone. Compound identification using gas chromatography-mass spectrometer showed the presence of dracorhodin compounds in all resins samples was. Therefore, dracorhodin can be used as a marker in dragon’s blood commodity.
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Judul: Upaya Isolasi Drakorodin dari Resin Daemonorops draco
Abstrak: Dragon’s blood is a secretion of rattan fruits. The commonly used rattan species is Daemonorops draco that contain the highest dracorhodin, but the content has not been determined quantitatively. Dracorhodin is a natural flavylium compound, anthocyanin derivative, and provides the natural color of dragon’s blood. This compound is potential as drug materials and natural dye. Dracorhodin isolated from dragon’s blood crude extract were analyzed using ultraviolet-visible (UV-Vis) spectrophotometric and high performance liquid chromatography (HPLC) with C18 column (5 μm, 250 × 4.6 mm id, Dikma). The samples were treated in acidic (60% HClO4) and non-acidic medium. UV-Vis spectra showed that dracorhodin was also detected at 400—490 nm. Dracorhodin was detected in HPLC chromatogram at retention time of 5 minutes, using ethyl acetate 1% in methanol as eluent, 0.5 mL/min flow rate, and detection wavelength at 475 nm. Dracorhodin content obtained from non-acidic medium crude methanol extract was 55.6%, which was higher than that in the acidic medium, namely 37.4% from the starting materials that was refluxed for about 1 hour. The isolates can be used as standard for quantifying dracorhodin in commercial dragon’s blood.
Keyword: high performance liquid chromatography, flavylium, dragon’s blood, dracorhodin, Daemonorops draco

Judul: Pengembangan Fitur Konsultasi Psikolog pada Aplikasi SocioEmpathy Menggunakan Metode Lean UX
Abstrak: SocioEmpathy adalah aplikasi mobile yang menghubungkan individu yang mengalami stres atau depresi untuk berkonsultasi dengan psikolog secara online. Stres adalah reaksi normal pikiran karena tuntutan lingkungan, sedangkan depresi adalah gangguan mental yang ditandai dengan perasaan sedih dan cemas. Pada penelitian ini, aplikasi SocioEmpathy dikembangkan dengan menggunakan Lean UX dan diuji menggunakan metode five act interview untuk mengetahui efektivitasnya kepada pengguna. Wawancara dilakukan kepada 4 responden, yaitu 3 klien dan 1 psikolog. Hasil penelitian ini, berdasarkan umpan balik dari para responden masih terdapat beberapa masalah, seperti: 1) Sulit menggunakan aplikasi karena tidak ada tutorial, 2) Belum dicantumkan syarat dan ketentuan untuk pengguna, 3) Pembatasan jumlah klien yang dapat berkonsultasi dengan psikolog di waktu yang sama, 4) Penambahan fitur pengingat waktu sebelum konsultasi berakhir. Kesimpulan dari penelitian ini adalah aplikasi SocioEmpathy sudah dapat membantu klien yang ingin konsultasi dengan psikolog. Namun, fiturnya masih harus ditingkatkan. Di sisi lain, psikolog dapat memperluas cakupan klien tanpa dibatasi oleh jarak.
Keyword: depresi, five act interview, lean ux, psikologi, stres