Judul: Biotransformasi Eugenol Menjadi Vanillin oleh Bakteri Asal Rizosfer Tanaman Cengkeh (Syzygium aromaticum)
Abstrak: Vanillin merupakan salah satu senyawa yang penting secara komersial karena banyak digunakan dalam industri seperti makanan, penyedap rasa, wewangian, dan obat – obatan. Karena luasnya aplikasi vanilin sebagai senyawa serta diikuti meningkatnya perhatian konsumen terhadap proses produksinya yang alami dan ramah lingkungan, maka penelitian ini difokuskan pada seleksi bakteri penghasil vanillin dengan menggunakan biotransformasi eugenol. Dua puluh delapan isolat bakteri dari rizosfer cengkeh diamati kemampuan pertumbuhannya pada media yang mengandung eugenol. Isolat bakteri dengan kode BKL 4 dan BKL 15 dipilih sebagai galur potensial untuk produksi vanilin dan diidentifikasi masing – masing sebagai Pseudomonas monteilii dan Lysinibacillus xylanilyticus menggunakan analisis filogenetik molekuler dari urutan gen 16S rDNA. Konfirmasi produk didasarkan pada analisis menggunakan High Performance Liquid Chromatography (HPLC) dan Gas Chromatography-Mass Spectrometry (GCMS). Hasil molar vanillin adalah 10,43% (2,31 g/L) pada isolat BKL 4 dan 4,99% (1,11 g/L) pada isolat BKL 15 selama 144 jam biotransformasi pada kondisi kultur berikut: konsentrasi eugenol 24 g/L dan media konsentrasi 5 g/L untuk isolat BKL 4 dan 20 g/L untuk isolat BKL 15. Penelitian ini memberikan informasi berharga mengenai potensi bakteri dalam biotransformasi eugenol menjadi produk yang lebih bernilai seperti vanilin.
Keyword: Biotransformation, clove, eugenol, vanillin, rhizosphere bacteria

Judul: Process design in the production of isoeugenol and vanillin from eugenol of clove leaf oil
Abstrak: Clove leaf oil contains a high amount of eugenol (70-95%) and hence it has been considered as a potential raw material for production of isoeugenol and vanillin, which have high economic value. This study was aimed at designing production of isoeugenol and vanillin from eugenol of clove leaf oil and analyzing the potential product development financially.The specific objectives of this research work are 1) Identify the isoeugenol and vanillin, 2) Model simulation of process design of isoeugenol and vanillin, 3) Study on financial feasibility and added value. This research is expected to provide maximum economic potential of eugenol to enhance the added value of clove leaf oil. The results showed that the FTIR and NMR products confirmed that isoeugenol and vanillin present in the synthesized product were identical to the reference standards. Model simulation of process design suggested that isomerization reaction of eugenol to produce isoeugenol occurred at temperatures of 25-200oC and 1 atm pressure, with the average conversion and isoeugenol of 90% and product purity of 89,6%. Meanwhile, oxydation of isoeugenol which then produced vanillin took place at temperatures of 19.22-150oC and 1 atm pressure resulting in the average conversion of 90% and product purity of 98%. Financial analysis on isoeugenol and vanillin industries showed feasible at production capacities of 1,157,280 kg/year and 853,929 kg/year respectively, with total investment of Rp. 3,795,050,000 and 3,795,050,000 as well as working capital of Rp. 127,487,726,119 and Rp. 154,794,595,559 respectively. At an interest rate of 12% and 10 years project lifetime showed the NPV of Rp. 645,341,441,970 and Rp. 779,561,530,094 respectively. Furthermore, the IRR were 47,40% and 47,43%; net B/C ratio 3.90 and 3.91; BEP 8,178 and 5,063 products unit; PBP 1.27 and 1.25 years. Value added of eugenol to isoeugenol and vanillin industry were Rp. 145,193 and Rp 175,651/kg respectively, while labor incomes were Rp. 447.0 and Rp. 2.190/kg, processor profits Rp. 144.476 and Rp. 173.461/kg. It is concluded that designing industrial production of isoeugenol and vanillin from eugenol of clove leaf oil is financially feasible.
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Judul: Modeling Multi-Agent in Futsal Sport Using Finite State Machine.
Abstrak: Building agents for futsal scenario requires methodologies for implementing high-level complex behavior and efficient programming. With that hypothesis in mind, this paper will show that we can develop futsal agents using simple logic and rule-based manner with Finite State Machine (FSM). FSM provides a powerful way to describe dynamic behavior of systems and components. The systems adapt specific behaviors with the main focus on how agents should behave for current situation. This research is designed with State design pattern to implement FSM in object oriented languages. In order to describe procedural aspects of the agents behavior, the state machine represented by state diagram. Because of this, we can revise behavior of agents which is triggered by external events. From this research the system can describe agent’s behavior and specified the state of the current situation. Keywords: Multi-agent, Finite State Machine, object oriented, State design pattern.
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