Judul: Mempelajari Penyimpanan Wortel (Daucus carota L.) dengan "Modified Atmosphere"
Abstrak: Produksi sayur-sayuran dan buah-buahan segar setiap tahun terus meningkat, dimana pada tahun 1985 jumlahnya sebesar 4.5 juta ton meningkat menjadi 7.7 ton pada tahun 1990 (Deptan, 1991) . Peningkatan produksi tersebut membutuhkan teknologi penanganan pasca panen yang tepat untuk mempertahankan mutu buah dan sayur, serta menurunkan kehilangan (losses) pasca panen. Teknologi penyimpanan yang sedang berkembang saat ini adalah penyimpanan dengan udara termodifikasi (modified atmosphere) yang dikombinasikan dengan penyimpanan pada suhu rendah.
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Judul: Kajian Penyimpanan Rajangan Wortel Segar Terolah Minimal Dalam Kemasan Atmosfer Termodifikasi
Abstrak: Wortel (Daucus carota) terolah minimal dapat dijadikan alternatif penyajian sebagai sayuran segar. Masalah yang terjadi pada pascapanen wortel adalah produk mudah mengalami kerusakan akibat masih berlangsungnya proses fisiologis. Teknologi pascapanen untuk memperpanjang masa simpan sayuran segar dapat dilakukan antara lain penyimpanan dengan atmosfer termodifikasi yang dikombinasikan dengan penyimpanan suhu rendah sehingga konsumen dapat mengetahui secara langsung mutu wortel yang akan dikonsumsinya. Tujuan penelitian secara umum untuk mengkaji kondisi kemasan atmosfer termodifikasi yang sesuai untuk memperpanjang masa simpan rajangan wortel segar/wortel terolah minimal dengan mutu yang masih dapat diterima konsumen, sedangkan tujuan khusus adalah 1) mempelajari laju respirasi rajangan wortel segar pada berbagai tingkat suhu penyimpanan, 2) menentukan komposisi O2 dan CO2 optimum untuk penyimpanan rajangan wortel segar, 3) menentukan jenis film kemasan yang sesuai dan berat optimum untuk penyimpanan rajangan wortel segar, 4) validasi penyimpanan rajangan wortel segar dalam kemasan atmosfer termodifikasi menggunakan film kemasan terpilih, 5) membandingkan rajangan wortel segar dalam kemasan atmosfer termodifikasi dengan kemasan tanpa udara (vakum) dan (6) penentuan parameter mutu kritis dan umur simpan rajangan wortel segar dalam kemasan terpilih.
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Judul: Phylogeography and Species Limits in the Papuan White Snake (Micropechis ikaheka) (Reptilia: Serpentes: Elapidae)
Abstrak: Papua white snake, Micropechis ikaheka, has been distingushed into two subspecies M.i. ikaheka and M.i. fasciatus. However, due to lack of data on their morphology, distribution and ecology, both subspecies often ignored in scintific discussions and refers only byas , Micropechis ikaheka. This study was designed to document the differences between M.i. ikaheka and M.i fasciatus by using scales characteristics and reproductive organ or hemipenes. The study also examine, zoogeography, habitat, diet and cannibalism of both subspecies to better understanding the the ecology of one of the most venomous snakes in the world. This study consists of three topics with method and also different in the size samples, respectively. The first study is the histology and microtopography of the skin were studied using paraffin method and Scanning Electron Microscope (SEM). The second is the hemipenis were examined by following Myers and Cadle (2003), and Zaher and Prudente (2003). The third is the abdominal surgery was carried out to document diet type and the investigate phenomenon of cannibalism in the snake. Specimens for this study came from the collection from Museum Zoologicum Bogoriense (MZB) and Universitas Negeri Papua’s Laboratory (LZU). The research result also indicated that the markers of skin and hemipenis described the same structure and microornamentation in all M. ikaheka groups being compared. Based specimens examined morphological descriptions do not s support the further differentiation in Micropechis. In short, two markers that used in this study could not sufficiently indicate the differences in the level of species and subspecies of M. ikaheka. The study, however, were able to delineate zoogeography and skin color patterns, which fall into four groups: M. i. ikaheka; M. i. fasciatus. M. i. ssp. “intermediate”; and M. i. ssp “black”. This study also revealed that color variations did not overlap in their geographic distribution. It is therefore, it suggested that environmental factors may contribute to the skin color variations. It also assumed that habitat discontinuous and biogeography factors may also cause the loss of the connection between the original populations (vicarians) or follow colonization events (dispersal). The examined of 22 stomach contents of M. ikaheka shows this species is carnivorous, and prey on vertebrates such as amphibians, fish, reptiles, and Mammals. These snakes are opportunistic predators since they prey on all that can be captured, but mainly reptiles (61.5%), followed by mammals and fish (both 15.4%), and amphibians (7.7%). Although categorized as terrestrial animal, the diet study showed that M. ikaheka snakes often go into the water to hunt for fish (the sample from Yapen island), including eel (the sample from Aru island). Based on prey items indentified, there is evidence that M. ikaheka is cannibal. At this time, there still no record on reason for cannibalism, but it is assumed that cannibalism was due to competition between populations and means to control population.
Keyword: geographic variation, white snake, papua