Judul: Kajian Literatur Metode Ekstraksi Kitin secara Biologis
Abstrak: Udang merupakan bahan makanan yang mengandung protein (21%), lemak (0.2%), vitamin A, vitamin B, dan mengandung mineral. Udang dikonsumsi hanya dagingnya saja sehingga menyisakan hasil samping berupa kulit, kepala, dan ekor. Hasil samping udang ini dapat diolah lebih lanjut menjadi kitin dengan metode kimia dan biologis. Tujuan penelitian ini yaitu mengidentifikasi, menganalisis, membandingkan sumber literatur berupa hasil penelitian tentang ekstraksi kitin secara biologis dan menentukan pengaruh organisme yang berbeda terhadap parameter kadar kitin, protein, dan mineral (abu) melalui studi literatur. Ekstraksi kitin secara biologis umumnya menggunakan Lactobacillus plantarum dan Bacillus licheniformis. Metode ekstraksi kitin secara biologis yang dapat menghasilkan rendemen kitin yang lebih dari 90% yaitu dengan bertahap (demineralisasi dilanjutkan dengan deproteinasi) dan menggunakan lebih dari satu mikroorganisme yaitu L. plantarum untuk proses demineralisasi dan dilanjutkan oleh B. licheniformis untuk proses deproteinasi., Shrimp is a food ingredient that contains protein (21%), fat (0.2%), vitamin A, vitamin B, and contains minerals. Shrimp is consumed only its meat and produces by products in the form of skin, head and tail. The by-products of shrimp can be further processed into chitin by chemical and biological methods. The purpose of this study is to identify, analyze, compare literature sources in the form of research results on biological chitin extraction and determine the effect of different organisms on parameters of chitin, protein, and mineral (ash) levels through literature studies. Biological chitin extraction generally uses Lactobacillus plantarum and Bacillus licheniformis. Biological chitin extraction method that can produce chitin yield of more than 90%, namely gradually (demineralization followed by deproteination) and using more than one microorganism, namely L. plantarum for the demineralization process and followed by B. licheniformis for the deproteination process.
Keyword: Bacillus licheniformis, chitin, extraction, Lactobacillus plantarum, shrimp shell

Judul: Process design and scale up of the biological extraction of chitin from shrimp shells
Abstrak: Biologically chitin extraction was conducted by mic robial process for deproteinization and demineralization. Lactobacillus acidophilus FNCC 116 was used for demineralization and Bacillus licheniformis F11.1 for deproteinization. The aim of the experiment was to design the biologi cal extraction process of chitin from shrimp shells and to obtain the best sc aling up criteria for the biological chitin extraction. The result of design of the biologically chitin extraction process from shrimp shells was as follow : The Shrimp shells was ground into pieces of 5 – 10 mm and followed by dem ineralization that was conducted by subsequent batch fermentation., Biologically chitin extraction was conducted by mic robial process for deproteinization and demineralization. Lactobacillus acidophilus FNCC 116 was used for demineralization and Bacillus licheniformis F11.1 for deproteinization. The aim of the experiment was to design the biologi cal extraction process of chitin from shrimp shells and to obtain the best sc aling up criteria for the biological chitin extraction. The result of design of the biologically chitin extraction process from shrimp shells was as follow : The Shrimp shells was ground into pieces of 5 – 10 mm and followed by dem ineralization that was conducted by subsequent batch fermentation.
Keyword: microbial process, deproteinization and demineralization, Lactobacillus acidophilus FNCC 116, chitin content

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh.
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. ,,,
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular.