Judul: Produksi Biohidrogel Berbasis Pati Karboksimetil-Kitosan dan -Alginat.
Abstrak: Biohidrogel merupakan rantai polimer organik yang memiliki struktur tiga dimensi, bersifat hidrofilik, dan mampu mempertahankan sejumlah air di dalam matriksnya. Biohidrogel diproduksi dari pati karboksimetil (CMS) menggunakan teknik kopolimerisasi grafting dengan asam metakrilat dan inisiator cerric amonium nitrate (CAN). Tujuan penelitian ini adalah untuk mengkaji pengaruh penambahan selulosa karboksimetil (CMC) sebagai penguat matriks biohidrogel dan jenis kopolimer (kitosan atau alginat) terhadap parameter grafting dan karakteristik produk biohidrogel yang dihasilkan. Hasil penelitian menunjukkan bahwa jenis kopolimer tidak mempengaruhi nilai parameter grafting dan karakteristik biohidrogel, sedangkan penambahan CMC meningkatkan nilai fraksi gel. Nilai parameter grafting terbaik diperoleh pada rasio CMS:CMC 10:2 (b/b) dengan grafting yield 2.12%, grafting efficiency 78.57%, dan konversi monomer 12.28% untuk biohidrogel berbasis CMS-kitosan, serta grafting yield 2.70%, grafting efficiency 73.89%, dan konversi monomer 16.67% untuk biohidrogel berbasis CMS-alginat. Karakteristik biohidrogel berbasis CMS-kitosan terbaik diperoleh pada rasio CMS:CMC 11:1 (b/b) dengan fraksi gel 75.47%, kelarutan 24.53%, swelling power 89.15 kali (b/b), daya serap air 9015.23%, dan daya serap minyak 104.50%. Karakteristik terbaik produk biohidrogel berbasis CMS-alginat diperoleh pada rasio CMS:CMC 10:2 (b/b) yaitu fraksi gel 78.27% dan kelarutan 21.73%; Swelling power 79.00 kali (b/b), daya serap air 7999.66%, dan daya serap minyak 106.58% diperoleh pada rasio CMS:CMC 12:0 (b/b).
Keyword: alginat, biohidrogel, kitosan, kopolimerisasi grafting, pati karboksimetil, selulosa karboksimetil

Judul: Produksi Biohidrogel Berbasis Carboxymethyl Starch - Kitosan.
Abstrak: Hydrogel is a three dimensional polymeric structure which has an ability to absorb and retain water within its structure. Hydrogel can be derived from natural and synthetic polymers. The natural polymers are usually biocampatible and biodegradable thus they do not produce adverse effects. The objective of this research is to analyze the effect of methacrylic acid concentration towards grafting parameter and biohydrogel properties which derived from carboxymethyl starch. Sago and tapioca were used as the raw material of carboxymethyl starch. The grafting process of methacrylic acid onto backbone polymer occured as a consequence of generating radical functional gruops, either in backbone polymer or in methacrylic acid itself. The grafting process had successfully occured based on Fourier Transform Infrared spectra analysis. The best grafting yield, grafting efficiency, and monomer conversion achieved with using 0,550 g/g methacrylic acid. Swelling, solubility, and water absorbtion property of biohydrogel are affected by methacrylic acid concentration. Meanwhile, oil absorbtion property is not affected by methacrylic acid concentration.
Keyword: biohydrogel, carboxymethyl starch, chitosan, grafting

Judul: Etno-ornitologi Burung Kancilan Flores (Pachycephala nudigula nudigula Hartert 1897) pada Masyarakat Lio di Taman Nasional Kelimutu
Abstrak: Bare-throathed whistler is one of several wild birds in Kelimutu National Park (TNKL) that is believed to have correlation with Lio Community‟s belief. The estimation of Bare-throated whistler‟s population in Kelimutu National Park was about 186.41-1668.07 individual by the density about 0.0389-0.3481 ind/ha with the sex ratio 6.2:1 that spreaded on area with height of 1100 – 1600 masl. The characteristic of Bare-throated whistler‟s habitat is a natural forest with various canopy level, high plant species diversity and high density. The habitat characteristics related to the availability of food in the form of insects, cover, safety and a nesting site. Generally the most of Lio community knew the existence of Bare-throated whistler directly or from their parents‟ stories. The perceptions of Lio Community to the Bare-throated whistler‟s existence is generally support the conservation efforts. The perceptions construct the Lio Community‟s atitude that tend to be conservative to the existence of Bare-throated whistler. The attitude shown by their behavior that not cathing the Bare-throated whistler from the TNKL‟s area or the outside. The attitude have an important role to the existence of Bare-throated whistler in Kelimutu National Park‟s area.
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