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All Journal Jurnal Ilmu Pertanian Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Pengabdian Magister Pendidikan IPA jurnal Ilmu Pertanian (Agricultural Science) Acta Chimica Asiana Jurnal Ilmu-Ilmu Pertanian Jurnal Ilmiah Abdi Mas TPB Unram Jurnal Warta Desa (JWD) Jurnal Pendidikan dan Pengabdian Masyarakat Jurnal Pengabdian Inovasi Masyarakat Indonesia Molekul: Jurnal Ilmiah Kimia
Tri Dharmayani, Ni Komang
Universitas Mataram
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences Other

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Journal : Acta Chimica Asiana

 1 
Antibacterial Test and Isolation of Xanthones from Pericarps Mangosteen (Garcinia mangostana L.) using Calcium Oxide (CaO) as a Vacuum Liquid Chromatography (VLC) Stationary Phase Ni Komang Tri Dharmayani; Inggit Garnasih; Emmy Yuanita; Maria Ulfa; Sudirman Sudirman; Made Ganesh Darmayanti; Maulida Septiyana
Acta Chimica Asiana Vol. 5 No. 1 (2022)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v5i1.117

Abstract

Xanthones are one of the biggest classes of compounds in natural product chemistry. Xanthones have been isolated from pericarp mangosteen (Garcinia mangostana L.) and then purified with VLC using calcium oxide (CaO) as the stationary phase and eluted using n-hexane: EtOAc of increasing polarity. Extraction of the pericarp mangosteen using the maceration method with acetone as the solvent. The isolation of xanthones was carried out through various chromatography techniques, such as vacuum liquid chromatography (VLC), gravitational column chromatography (GCC), and thin layer chromatography (TLC). The molecular structure of the compound was identified based on spectroscopy data, including IR, 1D NMR (1H and 13C), and 2D NMR (HSQC and HMBC). Based on the analysis of spectrum data, the isolated compound is ɑ-mangostin. The acetone extract and ɑ-mangostin were also examined for antibacterial activity against Gram positive (+) Staphylococcus aureus (S. aureus) ATCC 25923 and Gram negative (-) Escherichia coli (E. coli) ATCC 25922. The largest inhibition zone was shown by ɑ-mangostin against S. aureus (12.16 mm) more than E. coli (12 mm).
Highly photocatalytic performance of TiO2 nanowires in the conversion of benzaldehydes to benzoic acid Sudirman Sudirman; Lalu Dimas Pratama Atmaja; Ari Jamhari Pratama; Emmy Yuanita; Ni Komang Tri Dharmayani; Maria Ulfa; Romel Hidayat
Acta Chimica Asiana Vol. 6 No. 2 (2023)
Publisher : The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v6i2.160

Abstract

The synthesis of environmentally friendly-based chemicals such as solvent-free continues to be developed. A critical precursor in chemical synthesis is benzoic acid. This research developed a synthesis method by utilizing TiO2 nanomaterials with different morphologies as photocatalysts, namely nanoparticles (NPs) and nanowires (NWs). Titanium (IV) oxide with nanowires morphology was synthesized by hydrothermal method under alkaline conditions. SEM, XRD, and FT-IR images confirmed the morphologies of TiO2 NPs and TiO2 NWs. Photocatalytic performance in converting benzaldehyde to benzoic acid showed a significant difference of up to 38% using TiO2 NPs and 94% using TiO2 NWs.
Co-Authors Ari Jamhari Pratama Baiq Nila Sariningsih Baiq Nurmayana Devy Febriana Dewi Fitri Nur’afuddin Dhoni Hermanto Emmy Yuani Emmy Yuanita Emmy Yuanita Emmy Yuanita Emmy Yuanita Emmy Yuanita Ernidasari Rohmati Erwin Jayadi Putra I MADE SUDARMA Inda Noviani Inggit Garnasih Ira Agustina Isnaini Iwan Sumarlan Kadek Yefta Christian Lalu Dimas Pratama Atmaja Made Ganesh Darmayanti Maria Ulfa Maria Ulfa Maria Ulfa Maria Ulfa Maria Ulfa Maulida Septiyana Muhammad Suprodi Suprodi Ni Ketut Santi Rahayu Nur Indrianingsih M.G Indrianingsih Nurlely Shabna Syundari Ridho Abdi Saputra Rina Kurnianingsih Romel Hidayat Saprizal Hadisaputra Sarkono Siti Raudhatul Kamali Sudirman Sudirman Sudirman Sudirman Sudirman Sudirman Sudirman Sudirman Sudirman Sudirman Surya Hadi Surya Hadi Surya Hadi Syahri, Jufrizal