Judul: Literature Study of Biodegradable Film Based-on Canna Starch and Beeswax Composites with Tangerine Essential Oil as Antibacterial
Abstrak: Pati banyak digunakan sebagai bahan dasar film biodegradabel. Pati ganyong berpotensi sebagai bahan dasar film karena kandungan amilosa yang tinggi, dan malam lebah berpotensi sebagai bahan penguat film karena kandungan lipid yang menjadikannya bersifat hidrofobik. Namun, film biodegradabel yang dihasilkan dari polimer alam mudah dirusak bakteri, sehingga dibuat inovasi berupa film antibakteri. Minyak asiri jeruk keprok berpotensi sebagai bahan antibakteri karena kandungan limonena yang tinggi. Penelitian ini bertujuan memperoleh informasi mengenai potensi film biodegradabel berbahan dasar pati ganyong dan malam lebah dengan tambahan minyak asiri dari kulit jeruk keprok melalui kajian pustaka secara sistematis. Film berbasis pati mengalami penambahan ketebalan dan kuat tarik, serta penurunan elongasi dan permeabilitas uap air setelah ditambahi lilin lebah. Film berbasis pati menunjukkan sifat inhibisi terhadap berbagai bakteri patogen makanan dengan tambahan minyak asiri Citrus sp. Berdasarkan studi pustaka, umbi ganyong, lilin lebah, dan minyak asiri jeruk keprok berpotensi dijadikan sebagai bahan dasar film biodegradabel., Starch is widely used as a base material for biodegradable films. Canna starch has potential as a film base material due to its high amylose content, and beeswax has potential as a film strengthening agent per its lipid contents, making it hydrophobic. However, bacteria can easily damage the natural polymer-based films, so innovations such as antibacterial films are made. The tangerine essential oil can be an antibacterial agent for its high limonene content. This study aims to obtain information on the potential of biodegradable films based on canna starch and beeswax with added essential oil from the tangerine peel through a systematic literature review. Starch-based films increased in thickness and tensile strength and decreased elongation and water vapor permeability with the addition of beeswax. Furthermore, starch-based films showed inhibitory properties against food pathogenic bacteria with the addition of Citrus sp. essential oils. Therefore, based on the literature, canna tubers, beeswax, and tangerine essential oils can be used as biodegradable film basic materials.
Keyword: antibacterial, beeswax, biodegradable film, canna starch, tangerine essential oils

Judul: Study of Mechanical and Antimicrobial Properties of Edible Film based on Starch and Chitosan with Plasticizer
Abstrak: Pengemasan menggunakan edible film merupakah salah satu cara pengurangan penggunaan plastik komersil. Penelitian tentang edible film telah banyak dilakukan dan terbukti aman dan potensial sebagai pengemas pangan. Pati merupakan polimer jenis polisakarida yang tersusun atas amilosa dan amilopektin. Hasil analisis pada penelitian ini menunjukkan pati dengan penambahan kitosan dan plasticizer meningkatkan sifat mekanik dari edible film. selain itu, kitosan memiliki sifat antimikroba sehingga dapat meningkatkan daya tahan dan masa simpan. Penelitian ini dilakukan untuk mengkaji pengaruh konsentrasi pati, kitosan dan plasticizer terhadap sifat mekanik edible film dengan menggunakan regresi linier sederhana. Kitosan menunjukkan aktivitas antimikroba yang tinggi terhadap berbagai jenis mikroorganisme patogen dan pembusuk seperti jamur, bakteri gram-positif dan gram-negatif. Sebagai antimikroba kitosan memiliki sifat mekanisme penghambat pertumbuhan mikroorganisme sehingga berpotensi sebagai kemasan bahan dan pengawetan kualitas makanan.
Keyword: antimikroba, kitosan, pati, plasticizer

Judul: Perbandingan Answer Set Programming dan Iterative Deepening Search dalam Menyelesaikan Game N-puzzle
Abstrak: N-puzzle is one of the known NP-complete problems in the field of puzzles and games. The purpose of N-puzzle is to arrange numbers from 1 to (n2-1) in an n x n grid, with one grid contains a blank square. The research aims to compare the use of Answer Set Programming (ASP), as one of the currently used formalism to express and solve hard computational problems, with the traditional Iterative Deepening Search (IDS) in solving the N-puzzle. An encoding of N-puzzle problem and solver was devised and executed using the DLV system, while IDS is implemented as an ad-hoc program solving the N-puzzle problem. The result of experiment shows that the ASP using DLV is more effective in finding solutions, because it requires no depth parameters to find solutions, while IDS does. On the other hand, the IDS implementation was more efficient in terms of execution time.
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