Judul: Kurva Pertumbuhan Lima Jenis Bambu
Abstrak: Bambu adalah tanaman yang memiliki pertumbuhan cepat dan telah dikenal secara luas. Tujuan dari penelitian ini adalah menemukan kurva pertumbuhan bambu dengan menggunakan model pertumbuhan eksponensial yang dimodifikasi dengan fungsi linier, logaritma, kuadratik dan kuadrat logaritma. Model terbaik yang dipilih berdasarkan pada R2 terbesar di antara 4 (empat) model yang digunakan. Berdasarkan kurva tersebut didapatkan bahwa bambu hitam (Gigantochloa atroviolaceae Widjaja) mencapai tinggi maksimum rata-rata pada umur 2.5 bulan dengan tinggi 1 225 cm. Bambu tali (Gigantochloa apus (JA & JH Schultes) Kurz) mencapai tinggi maksimumrata-rata saat berumur 2.2 bulan dengan tinggi 1 181 cm. Bambu ampel (Bambusa vulgaris vulgaris-Green) mencapai tinggi maksimum rata-rata saat berumur 3.75 bulan, dengan tinggi 1 081 cm. Sementara bambumayan (Gigantochloa robusta Kurz) & bambu betung (Dendrocalamus Asper (Schult.f) Backer ex Heyne) mencapai tinggi maksimum rata-rata saat berumur 5.5 bulan dan 4.1 bulan dengan tinggi 1 450 cm dan 1 400 cm. Kurva pertumbuhan dengan modifikasi kuadratik merupakan pendekatan terbaik untuk bambu hitam dan bambu tali. Modifikasi kuadrat logaritma lebih tepat digunakan untuk bambu tali, mayan dan betung.
Keyword: bambu, kurva pertumbuhan, model pertumbuhan

Judul: Pertumbuhan Tiga Spesies Bambu Dengan Berbagai Media Tanam
Abstrak: Bambu termasuk jenis rerumputan dari famili Poaceae, yang tumbuh menyerupai pohon berkayu dengan batang bulu berongga. Hal tersebut dikhawatirkan penurunan potensi dan keanekaragaman jenis bambu dapat terjadi. Oleh karena itu, perlu dilakukan pemenuhan bibit bambu. Tujuan dari penelitian ini adalah mengetahui media yang paling cocok untuk mendukung percepatan pertumbuhan dan mengetahui dari ketiga spesies bambu mana yang paling cepat tumbuh. Penelitian dilakukan selama 12 minggu, pada bulan April hingga Juli 2023. Jenis data yang digunakan yaitu jumlah cabang, jumlah daun, dan persentase hidup. Analisis data menggunakan uji ANOVA kemudian dilakukan uji lanjut BNT (Beda Nyata Terkecil) dengan metode RAK (Rancangan Acak Kelompok). Hasil dari penelitian menunjukkan bahwa media tanam yang paling baik untuk pertumbuhan yaitu campuran media tanam tanah dengan pupuk kandang. Spesies bambu yang berpengaruh nyata pada pertumbuhan stek cabang bambu adalah bambu buluh (Schizostachyum brachycladum). Persentase hidup keberhasilan pertumbuhan stek cabang bambu dimiliki oleh bambu buluh (Schizostachyum brachycladum) dan bambu ater (Gigantochloa atter), yaitu 58%. Kata kunci: bambu, media tanam, pertumbuhan, stek cabang, Bamboo is a type of grass from the Gramineae family, that grows to resemble a woody tree with hollow bristle stems. It is feared that there may be a decrease in the potential and diversity of bamboo species. Therefore, it is necessary to fulfil bamboo seedlings so that the existence of bamboo species is maintained. The purpose of this study was to determine the most suitable medium to support the acceleration of growth and to determine which of the three species of bamboo is the fastest growing. The study was conducted for 12 weeks, from April to July 2023. The type of data used is the number of branches, the number of leaves, and the percentage of life. Data was analyzed using the ANOVA test, and then further tests were run using the SMD (Smallest Mean Difference) test with the RGD (Random Group Design) method. The results of the research show that the best planting medium for growth is a mixture of soil and manure. The bamboo species that has a significant effect on the growth of bamboo branch cuttings is reed bamboo (Schizostachyum brachycladum). The survival percentage of successful growth of bamboo branch cuttings belongs to reed bamboo (Schizostachyum brachycladum) and ater bamboo (Gigantochloa atter), namely 58%. Keywords: bamboo, branch cuttings, growth, growing medium
Keyword: Bamboo, Branch cuttings, growth

Judul: Pemurnian dan karakterisasi protein inhibitor RNA helikase virus hepatitis C
Abstrak: Hepatitis C virus (HCV) infection is the second most common chronic viral infection in the world with global prevalence. This infection is contribution to chronic hepatitis and liver cirrhosis, often leading to hepatocellular carcinoma. There is no effective drug and vaccine available against HCV. The current standard treatment, a combination of pegylated interferon-α with ribavirin, is limited by its suboptimal response rate in a significant patient population, side effects, and affordability. Therefore, development of effective drug is needed. One approach to find out the candidate of antiviral drug is to discover the inhibitor of enzyme that essential for virus replication, such as RNA helicase. Streptomyces chartreusis 5-095 produce the inhibitor of HCV RNA helicase. The aim of this study was to purify the protein inhibitor which has inhibition activity against ATPase activity of RNA helicase HCV from S. chartreusis 5-095. The supernatant of culture S. chartreusis 5-095 exhibited high inhibiton activity against ATPase activity of RNA helicase HCV (approximately 72%) at 10 days of incubation. The extracellular protein inhibitor was partially purified by procedures of precipitation with ammonium sulfate to 65% saturation and gel filtration (Sephadex G50) using methanol water solution (4:6) as an eluen. The purity of protein inhibitor was monitored by SDS PAGE. The protein inhibitor showed a relative molecular mass were estimated to be 14 kDa and increased the purity 23,08 fold than those of the crude protein. The specific activity and IC50 after purification were 13,1338 U/mg and 0,0767 mg/mL, respectively. The activity of purified protein inhibitor showed its stability over pH range from 5-8 and optimum at pH 7,4. The inhibition activity showed its stability up to 70% at temperature 100 oC. The purified protein inhibitor relatively stable its activity at storage in the range of -20 oC to room temperature for 35 days.
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