Judul: Bioaktivitas Zat Ekstraktif Kayu Manggis (Garcinia mangostana L.) Terhadap Rayap Tanah Coptotermes curvignathus Holmgren
Abstrak: Kebutuhan akan kayu terus meningkat seiring dengan meningkatnya jumlah penduduk, sementara kemampuan hutan alam untuk memproduksi kayu semakin menurun. Sehingga di masa depan penggunaan kayu akan didominasi oleh kayu dari Hutan Tanaman Industri (HTI). Namun demikian kayu-kayu yang dihasilkan umumnya memiliki keawetan alami yang rendah, sehingga mudah diserang oleh organisme perusak kayu Oleh karena itu untuk memperpanjang masa pakai kayu, dilakukan proses pengawetan dengan bahan kimia. Namun demikian, pengawet kayu yang digunakan sebagian besar merupakan bahan kimia sintetis non organik, sehingga memberikan dampak yang kurang menguntungkan bagi lingkungan karena bahan kimia tersebut bersifat non-biodegradable. Untuk mengurangi dampak negatif tersebut, sangat perlu pemanfaatan natural products atau zat ekstraktif yang terdapat di dalam kayu sebagai bahan pengawet alami. Penelitian ini dilakukan untuk mengetahui aktivitas anti rayap zat ekstraktif kayu manggis terhadap rayap tanah Coptotermes curvignathus Holmgren serta mengisolasi dan mengidentifikasi senyawa bioaktifnya dengan menggunakan spektrometri NMR. Penelitian ini dilakukan di Bagian Kimia Hasil Hutan, Fakultas Kehutanan IPB, Laboratorium Kimia Organik Departemen Kimia Fakultas MIPA IPB dan Pusat Penelitian Kimia Lembaga Ilmu Pengetahuan Indonesia (LIPI) Serpong, Tangerang.
Keyword: Garcinia mangostana L., Coptotermes curvignathus Holmgren, Antitermitic, Extractives

Judul: Anti-termite Properties of the Extractive Substance of Magnolia sumatrana (Miq.)) Against Subterranean Termites (Coptotermes curvignathus Holmgren).
Abstrak: Manglid (Magnolia sumatrana Miq.) merupakan salah satu jenis tanaman yang banyak dikembangkan di hutan rakyat Jawa Barat. Jenis ini relatif cepat tumbuh dan termasuk kelas awet II, sehingga memiliki ketahanan alami terhadap organisme perusak kayu. Penelitian ini bertujuan untuk mengetahui kadar ekstraktif kulit kayu manglid serta mengukur bioaktivitas zat ekstraktif tersebut terhadap rayap Coptotermes curvignathus Holmgren dan menganalisis komponen senyawa kimia yang terkandung di dalam fraksi teraktif. Ekstrak aseton yang diperoleh melalui ekstraksi dengan metode maserasi, difraksinasi secara bertingkat dengan pelarut n-heksan, etil eter, etil asetat. Analisis kimia dilakukan terhadap fraksi yang paling aktif dengan alat GC-MS. Fraksi etil asetat memiliki persentase mortalitas rayap rata - rata tertinggi sebesar 55,47 % serta persentase kehilangan berat kertas selulosa rata - rata terendah sebesar 24,89 %. Senyawa yang diduga mengandung bioaktivitas anti-rayap, yaitu (+)spathulenol dan (-)- Caryophyllene oxide., Manglid (Magnolia sumatrana Miq.) is a plant that is widely developed in the community forests of West Java. This species is relatively fast growing and has durable class II, so it has natural resistance to wood destroyers. This study aims to determine the extractive content of the manglid bark and to measure the bioactivity of the extractive substance against the termite Coptotermes curvignathus Holmgren and to analyze the components of chemical compounds contained in the most active fraction. The acetone extract obtained by extraction by maceration method was fractionated in stages with n-hexane, ethyl ether, and ethyl acetate as solvents. Chemical analysis was carried out on the most active fraction by means of GC-MS. The ethyl acetate fraction had the highest average termite mortality percentage of 55.47% and the lowest percentage of cellulose paper weight loss was 24.89%. The compounds suspected to contain anti-termite bioactivity are (+)spathulenol and (-)- Caryophyllene oxide.
Keyword: Ekstrak aseton, Kulit kayu manglid (Magnolia sumatrana Miq.), Rayap tanah (Coptotermes curvignathus), Bioaktivitas anti-rayap, Mortalitas, Kehilangan berat, Acetone extract, Manglid bark (Magnolia sumatrana Miq.), Subterranean termites (Coptotermes curvignathus), Anti-termites’ properties, Mortality, Weight loss

Judul: Studi Kasus Liver Neoplasia pada Anjing Shih Tzu
Abstrak: Liver neoplasia is the excessive and uncontrolled replication of hepatocytes that forms nodules visible in ultrasonography. The purpose of this study is to study and discuss the characteristic, diagnosis and treatment of liver neoplasm through the interpretation of ultrasonography and hematology in a Shih Tzu dog. Ultrasonography is conducted with a Chison Q8 ultrasound machine with a 5 to 7 MHz frequency convex probe on lateral recumbency. The blood cells, liver enzymes and nodules sizes were the main parameters in this study. The results in the period of three years from 2021 to 2023 were interpreted and supported with secondary data sources. The Shih Tzu dog is 14 years old in the year 2023 with a body weight of 5.21kg. No obvious clinical signs were observed during previous examinations. However, lethargy, vomiting and anorexia were recorded in its latest examination. Thrombocytosis, granulocytosis, high liver enzymes and hypoglycemia, which are some of the neoplastic clinical manifestations were also presented by this patient. Besides, liver neoplasm, spleen neoplasm and biliary sludge were the sonogram findings of this patient. The liver and spleen neoplasm was observed stable, while the biliary sludge volume fluctuated. The treatment strategy recorded is Ondansetron, Samylin®, Ornipural and Ursodeoxycholic acid.
Keyword: Blood biochemistry profile, Hematology, Liver Neoplasia, Shih Tzu, Ultrasonography