Judul: Optimasi Proses Pengeringan Simplisia Kayu Secang (Sappan Lignum) dan Aplikasinya pada Produk Minuman
Abstrak: Secangs plant (Caesalpinia sappan Linn.) or locally known as sappanwood, have long been used in a favorite beverage such as bir pletok from Betawi. In the progress of their utilization, sappanwood is used as simplicia in the pharmaceutical field. Simplicia is a natural material that presented in the dry form. Utilization of post-harvest handling technologies such as drying is an alternative technology to create a standard in producing simplicia of sappanwood (Sappan Lignum). The aims of study were to identify the practices of harvest and post harvest of sappanwood, to optimize the drying process of Sappan Lignum, to identify the availability of brazilin content, and to assess the level of consumer’s acceptance of sappan drink. This study consists of three phases. Phase I was to know the optimum brazilin content in samples from lowland (Takalar Regency) and highland (Gowa Regency) in South Sulawesi with three different cutting types. Phase II was to optimize the drying process by using Design Expert 8.0® with drying variables i.e. temperature (40°-60°C), air velocity (0,78-0,95m/s), and relative humidity (30-60%). The responses were analyzed i.e. dried shrinkage, brazilin content, colors (L and oHue), and drying time. Phase III was to produce sappan drink followed by organoleptic test (hedonic test). The results showed that the stem of plants with a big size is optimum to be harvested. The spines, the outer layer, and cambium of harvested sappanwood are removed to get wood core. Sappan Lignum from highlands (Lonjo'boko Village, Gowa Regency) have stick form contained the highest brazilin (79,87mg/g). The selected solution for optimum drying process of simplicia were drying temperature (60°C), air velocity (0,78m/s), and relative humidity (30%), with desirability value (0,709). Sappan drink produced from dried Sappan Lignum and fresh sappanwood showed the same acceptance level of the panelists in taste, aroma, and color.
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Judul: Sifat Dasar dan Sifat Pengeringan Tiga Jenis Kayu Kurang Dikenal Asal Hutan Alam Papua
Abstrak: One of serious problems which is commonly complained in wood industries is wood drying process because of long time and frequent deformation and checks. So, wood drying is an imperative process in wood industries. Indonesia has about 4 000 wood species, but only a few of these woods are well known in their properties and uses. Wood drying property is influenced by physical and anatomy properties of different woods. The objective of this research was to reveal the physical properties, anatomy and drying properties of three lesser known wood species from natural forests in Papua, namely briya hatam (Rhustaitensis guild) pala hutan (Gymnacranthera paniculata), and ketapang (Terminalia complanata) with respective families comprising Myristicaceae, Anacardiaceae and Combretaceae. These basic properties and drying property were beneficial direction on determining their uses. The physical properties of woods included moisture content, specific gravity and shrinkage. The anatomy of wood was observed based on their structures while wood drying test included drying rate, defects evaluation, and drying schedule. The results of research showed that specific gravity and the anatomy of wood structure influenced the wood drying property. All the three wood species were difficult to be dried. Briya hatam with the higher specific gravity (0.52) had more drying defects than pala hutan and ketapang whose specific gravity 0.47 and 0.38 respectively. According to the drying test and basic properties of woods, the proper drying schedule (temperature and humidity) for briya hitam, pala hutan and ketapang were 4580 0C and 9028%; 5080 0C and 8530%; 5080 0C and 90 – 28% respectively.
Keyword: lesser known species, wood anatomy, wood drying properties, physical properties, wood

Judul: Karakterisasi Urutan Nukleotida DNA Mitokondria Penyandi trna Valin (trnaval) Pada Reptilia
Abstrak: Urutan nukleotida beberapa gen tRNAVal diekstrak dari genom lengkap mitokondria reptilia yang diambil dari GenBank serta dua genom parsial mitokondria milik Laboratorium Zoologi, Institut Pertanian Bogor. Urutan nukleotida gen tRNAVal yang diperoleh kemudian dijajarkan berdasarkan struktur sekundernya. Gen ini terletak tepat di antara gen 12S rRNA dan 16S rRNA tanpa adanya penataan ulang posisi maupun pseudogen. Komposisi nukleotida didominasi oleh basa A dan T. Mutasi yang terjadi pada bagian batang kebanyakan adalah substitusi transisi. Gen ini dapat digunakan dalam analisis filogenetik namun menghasilkan struktur pohon yang kurang stabil. Selain urutan nukleotida pada bagian batang tRNA, nukleotida pada bagian lainnya (kecuali bagian simpai D dan T) dapat diikutsertakan di dalam analisis. Pohon filogeni yang dihasilkan mendukung formasi burung dan crocodilia dalam klad Archosauria, dan juga kecenderungan kurakura terhadap diapsida terutama Archosauria.
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