Judul: Business Analysis and Development of Chitosan-Based Coating Products at CV. Bio Chitosan Indonesia
Abstrak: CV. Bio Chitosan Indonesia merupakan perusahaan yang mengolah cangkang udang dan kepiting salju menjadi kitin dan kitosan. Salah satu permasalahan yang terdapat pada perusahaan ini adalah produk yang dihasilkan masih berupa produk setengah jadi, sehingga konsumen dari perusahaan sangatlah terbatas dan hanya dapat diterima oleh industri di luar negeri seperti Korea dan Jepang. Hal ini sangat disayangkan karena peluang untuk pengembangan produk berbahan dasar kitosan dapat menjadi pemasukan tambahan bagi perusahaan. Maka pada penelitian ini dilakukan pengembangan produk coating untuk memperpanjang umur simpan produk. Komposisi bahan yang digunakan adalah kombinasi antara kitosan (1%) dan gliserol (2%) dalam larutan asam sitrat (2%). Produk coating diujikan pada dua komoditas berupa apel dan paprika dengan menggunakan metode extended storage studies. Kedua produk mengalami peningkatan umur simpan hingga dua kali lipat dari penyimpanan kontrol tanpa menggunakan larutan kitosan. Larutan kitosan ini memiliki sifat asam yakni pH di angka 2,93, viskositas pada 20 cP, dan berat jenis sebesar 1,02 g/cm3. Pada penelitian ini dilakukan pemodelan bisnis menggunakan metode Business Model Canvas (BMC) yang mencakup kelebihan produk, segmentasi konsumen, mitra, rancangan keuangan, dan kegiatan operasional. Hasil analisis biaya proses produksi membutuhkan modal sebesar Rp61.000.000. Harga akhir untuk produk coating kitosan ini adalah Rp26.326 untuk penjualan dalam kemasan 1 L, Rp100.880 untuk kemasan jerigen 5 L, dan Rp53.777 untuk kemasan konsentrat 1 L., CV. Bio Chitosan Indonesia is a company that processes shrimp and snow crab shells into chitin and chitosan. One of the problems with this company is that the products it produces are semi-finished products, so the company's consumers are very limited and can only be accepted by overseas industries such as Korea and Japan. This is very unfortunate because the opportunity to develop chitosan-based products can be an additional source of income for the company. So in this research, the development of coating products was carried out to extend the shelf life of the product. The composition of the material used was a combination of chitosan (1%) and glycerin (2%) in a citric acid solution (2%). Coating products were tested on two commodities, namely apples and peppers. Both of these products experienced an increase in shelf life of up to two times that of control storage without using a chitosan solution. This chitosan solution had acidic properties, namely a pH of 2.93, a viscosity of 20 cP, and a specific gravity of 1.02 g/cm3. Business modeling was also carried out for this product using the Business Model Canvas (BMC) method, which includes product advantages, consumer segmentation, partners, financial plans, and operational activities. The results of the analysis of the cost of the production process require a capital investment of Rp61.000.000. The final price for this chitosan coating product using cost plus pricing method is Rp26.326 for sales in 1 L packaging, Rp100.880 for 5 L jerry cans, and Rp53.777 for 1 L concentrate packaging.
Keyword: Business Model Canvas, Chitosan, Coating, Pricing, Shelf-life

Judul: The Chitin Production Process from Shell of Crab Legs at CV. Bio Chitosan Indonesia
Abstrak: CV. Bio Chitosan Indonesia merupakan perusahaan yang mengolah cangkang udang dan kepiting salju (snow crab) menjadi kitin dan kitosan yang berkualitas tinggi. Penelitian ini dilakukan untuk menganalisis pengaruh konsentrasi HCl, waktu proses, dan suhu proses demineralisasi pada produksi kitin dari cangkang kaki rajungan di CV. Bio Chitosan Indonesia. Percobaan dilakukan melalui dua tahapan proses produksi kitin pada skala laboratorium menggunakan Rancangan Acak Lengkap Faktorial (RALF) dan Rancangan Acak Lengkap Single Factor (RALSF). Analisis ragam menunjukkan konsentrasi HCl, waktu proses demineralisasi, dan interaksi keduanya tidak berpengaruh nyata terhadap rendemen dan mutu kitin dari cangkang kaki rajungan, namun suhu proses demineralisasi berpengaruh nyata terhadap rendemen dan mutu kitin dari cangkang kaki rajungan. Perlakuan terbaik diperoleh dari kondisi proses produksi kitin dari cangkang kaki rajungan menggunakan larutan HCl 8%, waktu proses 3 jam, dan suhu ruang (30oC) dengan rendemen, kadar air, dan kadar abu masing – masing sebesar 20,44%, 3,36%, 0,33%. Kitin yang diperoleh sudah memenuhi standar mutu yang ditetapkan pembeli CV. Bio Chitosan Indonesia dan SNI., CV. Bio Chitosan Indonesia is a company engaged in processing shrimp and snow crab shells into high-quality chitin and chitosan. This research was conducted to analyze the influence of HCl concentration, process time, and demineralization process temperature on chitin production from shell of crab legs at CV. Bio Chitosan Indonesia. The experiment was carried out in two stages of chitin production at the laboratory scale using a Full Factorial Randomized Complete Design (FFRCD) and a Single Factor Randomized Complete Design (SFRCD). Analysis of variance showed that the concentration of HCl, demineralization process time, and their interaction did not significantly affect the yield and quality of chitin from the shell of crab legs. However, the demineralization process temperature significantly affected the yield and quality of chitin from the shell of crab legs. The best treatment was obtained from the chitin production process conditions from shell of crab legs using an 8% HCl solution, a process time of 3 hours, and room temperature (30°C), resulting in yields, moisture content, and ash content of 20.44%, 3.36%, and 0.33%, respectively. The obtained chitin meets the quality standards set by the buyers of CV. Bio Chitosan Indonesia and SNI.
Keyword: crab leg shell, demineralization, chitin

Judul: Konstruksi Hukum Grup Kurva Eliptik Atas F3m
Abstrak: Elliptic curves upon F3m can be divided in two cases, i.e. supersingular and nonsupersingular case. Based on group laws on elliptic curves, a new arithmetic upon F3m can be formulated as an addition process of two random points on the curve. This addition process can then be applied to the ElGamal algorithm.
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