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All Journal VALENSI Jurnal Natur Indonesia Jurnal Matematika & Sains Bulletin of Chemical Reaction Engineering & Catalysis Journal of Mathematical and Fundamental Sciences Jurnal Industri Hasil Perkebunan Jurnal Penelitian Sains Jurnal Sains Teh dan Kina ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry PHARMACY: Jurnal Farmasi Indonesia (Pharmaceutical Journal of Indonesia) Molekul: Jurnal Ilmiah Kimia Journal of Microbial Systematics and Biotechnology Molekul: Jurnal Ilmiah Kimia al Kimiya : Jurnal Ilmu Kimia dan Terapan
Yana Maolana Syah
Biochemistry Research Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Energy Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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Discrimination of Metabolite Profiles of Gayo Roasted Arabica and Robusta Coffees Nizar Happyana; Yana Maolana Syah; Euis Holisotan Hakim
Molekul Vol 17 No 1 (2022)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2022.17.1.5603

Abstract

Gayo (Aceh) coffee is one of the best coffees from Indonesia. In this work, metabolites in the Gayo roasted arabica and robusta coffees were identified with 1H NMR spectroscopy analysis. Accumulatively 28 compounds were successfully detected, including the major and minor metabolites of the roasted coffee. Multivariate data analysis was applied to evaluate the dataset extracted from 1H NMR spectra of the coffee samples, result in the disclosure of the differences in the chemical profiles between the Gayo roasted coffees of arabica and robusta. Score plots obtained from the models of principal component analysis (PCA) and orthogonal projections to latent structures discriminant analysis (OPLSDA), classified the roasted coffee samples based on their species. Loading plot and S-plot revealed the discriminant compounds for each coffee. Gayo roasted arabica coffee was characterized with acetic acid and trigonelline, while the robusta coffee was discriminated with fatty acids. This report revealed the chemical differences of both coffees and confirmed the diversity of Gayo coffees.
Synthesis of quinine N-oxide and an NMR tutorial in its structure determination Aisyah Aisyah; Nila Berghuis Tamaela; Joko Santoso; Yana Maolana Syah; Didin Mujahidin
Jurnal Penelitian Teh dan Kina Vol 17 No 1 (2014)
Publisher : Research Institute for Tea and Cinchona

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/pptk.jur.jptk.v17i1.45

Abstract

Cinchona alkaloids are one of abundant natural chiral pool for organocatalysts. The application of an N-oxide group containing molecule in asymmetric reaction is currently wide developed. The structure of quinine consist two amine groups that could be oxidized to the N-oxide groups at N-1’ of quinoline and at N-1 of quinuclidine moieties. The oxidation reaction took place selectively at quinuclidine moiety by controlling the concentration of oxidizing agents. In this study we showed that N-1-oxide quinine could be occurred chemo­selectively by using a low concentration of ozone thana palladium catalyzed oxidation. The structure of products N1-oxide quinine was elucidated by spectroscopy data including 1H-NMR, 13C-NMR, 2D-NMR, infra-red and mass spectrometry. The developed method is a chemoselectively and eco-friendly method for synthesis N1-oxide quinine.
Sifat Antibakteri dari Daun Tephrosia vogelii Terhadap Vibriosis Eri Bachtiar; Yana Maolana Syah; Lia Dewi Juliawaty
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 6, No 1 (2019): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v6i1.4506

Abstract

Sektor kelautan dan perikanan merupakan salah satu sumber andalan dalam produksi pembangunan perikanan di Indonesia. Udang merupakan salah satu komoditas unggulan utama dalam menunjang produksi pendapatan devisa non migas. Untuk mencapai target produksi sesuai dengan yang diharapkan, berbagai permasalahan menghambat upaya peningkatan produksi tersebut, antara lain kegagalan produksi akibat penyakit oleh bakteri Vibrio, sehingga penyakit ini dikenal sebagai ‘vibriosis’. Salah satu pencarian senyawa yang bersifat antibakteri adalah dengan cara melakukan penapisan terhadap senyawa-senyawa alam. Salah satu sumber senyawa alam adalah dari tumbuhan Tephrosia vogelii. Penelitian ini bertujuan untuk mengidentifikasi dan mengisolasi senyawa dari tumbuhan T. vogelii sebagai sumber senyawa antibakteri terhadap dua bakteri Vibrio yaitu Vibrio alginolitycus dan Vibrio harveyi. Bahan ekstrak dibuat dengan metode maserasi menggunakan pelarut aseton, sementara uji antibakteri dilakukan dengan metode difusi agar secara in vitro. Deguelin dan tefrosin kemudian diisolasi dari ekstrak aseton daun T. vogelii. dengan metode difusi agar senyawa deguelin memberikan nilai inhibisi 6,3 mm terhadap V. harveyi dan 6,2 mm terhadap V alginolitycus. Sedangkan  tefrosin memberikan nilai inhibisi 6,3 mm terhadap V. harveyi dan 6,6 mm terhadap V alginolitycus. Ini adalah evaluasi antibakteri pertama dari deguelin dan tefrosin terhadap dua bakteri yang diuji.
A Pyrone and Flavonoid Derivatives from Cryptocarya crassinervia and their Inhibitory Properties against Receptor Tyrosine Kinases Dian Nugraheni; Elvira Hermawati; Hendra Helmanto; Dikhi Firmansyah; Yana Maolana Syah; Lia Dewi Juliawaty
Journal of Mathematical and Fundamental Sciences Vol. 55 No. 3 (2024)
Publisher : Directorate for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2024.55.3.5

Abstract

A new a-pyrone, i.e., cryptocrassinervione (1), and a new flavone glycoside, i.e., kaempferol-3-O-rhamnosyl-2-O-apiofuranoside (4), were isolated from EtOAc extract of Cryptocarya crassinervia leaves. Along with these compounds, two known flavone glycosides, namely afzelin (2) and quercitrin (3), were also isolated. The structures of the new compounds were determined based on NMR and mass spectral data. Compounds 1–4 were examined against eight receptor tyrosine kinases (RTKs) (EGFR, HER2, HER4, IGF1R, InsR, KDR, PDGFRα, and PDGFRβ), which showed that these compounds were moderately active against EGFR, with inhibition percentages of 55, 49, 41, and 44%, respectively. They were weakly active against HER2, with inhibitions of 17, 20, 18, and 16%, respectively. However, they were not active against the rest of the RTKs. Nevertheless, compounds 1–4 have potency as inhibitors of EGFR.
Co-Authors A.A. Ketut Agung Cahyawan W Achmad Saifuddin Noer Affrida Affrida Aisyah Aisyah Aisyah Aisyah Alan Jefferson Aliefman Hakim Asep Aripin Asep Kadarohman Azzania Fibriani Bambang Ariwahjoedi Buchari Buchari Buchari Buchari Bunbun Bundjali Deana Wahyuningrum Debbie Soefie Soefie Dessy Natalia Devitri Amisa Dian Nugraheni Didin - Mujahidin Didin Mujahidin Didin Mujahidin Didin Mujahidin Didin Mujahidin Didin Mujahidin Didin Mujahidin Didin Mujahidin Dikhi Firmansyah Eliza Eliza Elvira Hermawati Elvira Hermawati Emilia L Ghisalberti Emilia L. Ghisalberti Emilio L Ghisalberti Endang Rosdiana Eri Bachtiar Eri Bakhtiar Euis Holishotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotasn Hakim Feraliana Feraliana Ferlinahayati Ferlinahayati Firdaus, Firdaus Hanapi Usman Hartiwi Diastuti Hartiwi Diastuti Hartiwi Diastuti Haryoto Haryoto Hendra Helmanto Hernandi Sujono Hiromitsu Takayama Hiromitsu Takayama I Dewa Agung Panji Dwipayana I Nyoman Adi Winata Ihsanawati Ihsanawati Ikram M. Said Ilim Ilim Ilimu, Edi Iqbal M. Choudhary Jalifah Latip Jalifah Latip Joko Santoso Kholifatu Rosyidah Laily Bin Din Lia Dewi Juliawati Lia Dewi Juliawati Lia Dewi Juliawaty Lia Dewi Juliawaty Lia Dewi Juliawaty Liliasari Liliasari Lukman Makmur Lukman Makmur Lukman Makmur Lukman Makmur Lukman Makmur Lukman Makmur M I Choudhary Marc Jeannin Mariko Katajima Mariko Kitajima Mariko Kitajima Marlia Singgih Marlia Singgih Marlia Singgih Masatake Niwa Melina Melina Muhamad Abdulkadir Martoprawiro Muhammad N. Jalaluddin Muhtadi Muhtadi Nanik Siti Aminah Nia Sri Hardianti Nila Berghuis Tamaela Nila Berghuis Tamaela, Nila Berghuis Nizar Happyana Nizar Happyana Nordin Hj Lajis Norio Aimi Norio Aimi Norio Aimi Noviany Noviany Nunuk H Soekamto Nunuk Hariani Soekamto Purkan Purkan Reza Aditama Rusjdi Tamin Sadijah Achmad Sahidin . Sahidin Sahidin Senadi Budiman Siti Nurbayti Siti Zubaidah Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Soerya Dewi Marliyana Sri Atun Suci Zulaikha Hildayani Sukrido Sukrido Suwandri Suwandri Suwandri Suwandri Tia Setiawati Tjodi Harlim Tri Cahyanto Valentina Adimurti Valentina Adimurti Kusumaningtyas Wasinton Simanjuntak Windayani, Neneng Yaya Rukayadi Yuliana, Trisna Zakaria Zakaria