1. 毕业设计（论文）的内容和要求
一、论文内容： 几丁质是一种天然的含氮多糖类生物高分子，在自然界中其含量仅次于纤维素，是一种丰富的可再生资源，广泛存在于节肢动物、软体动物、环节动物、腔肠动物、海藻、真菌和动物关节中。
几丁质酶可以将几丁质降解为N-乙酰氨基葡萄糖和几丁寡糖。
而氨基寡糖是一类由Ｄ－氨基葡萄糖或Ｎ－乙酰氨基葡萄糖之间通过糖苷键连接而成一种低聚糖（及其盐），聚合度（Degree of polymerization）般分布在2-10。
2. 参考文献
[1] Ahmed A B A, Taha R M, Mohajer S, et al. Preparation, properties and biological applications of water soluble chitin oligosaccharides from marine organisms [J]. Russian Journal of Marine Biology, 2012, 38(4):351-358.[2] Dutta J, Tripathi S, Dutta P K. Progress in antimicrobial activities of chitin, chitosan and its oligosaccharides: a systematic study needs for food applications [J]. Journal of Thoracic Cardiovascular Surgery, 2012, 18(1):3-34. [3] Gooday G W. The Ecology of Chitin Degradation [J]. Advances in Microbial Ecology, 1990, 11:387-430.[4] Jeong Y I, Shim Y H, Choi C Y, et al. Surfactant-free nanoparticles of poly(DL-lactide-co-glycolide) prepared with poly(L-lactide)/poly (ethylene glycol) [J]. Journal of Applied Polymer Science, 2010, 89(4):1116-1123.[5] Souza C P, Almeida B C, Colwell R R, et al. The Importance of Chitin in the Marine Environment [J]. Marine Biotechnology, 2011, 13(5): 823-30.[6] Stankiewicz B A, Mastalerz M, Hof C H J, et al. Biodegradation of the chitin-protein complex in crustacean cuticle [J]. Organic Geochemistry, 1998, 28(1-2):67-76.[7] Mulisch M. Chitin in protistan organisms: Distribution, synthesis and deposition [J]. European Journal of Protistology, 1993, 29(1): 1-18.[8] Feng F, Liu Y, Hu K. Influence of alkali-freezing treatment on the solid state structure of chitin [J]. Carbohydrate Research, 2004, 339(13): 2321-4.[9] Minke R, Blackwell J. The structure of α-chitin [J]. Journal of Molecular Biology, 1978, 120(2): 167-81.[10] Raabe D, Romano P, Sachs C, et al. Microstructure and crystallographic texture of the chitin-protein network in the biological composite material of the exoskeleton of the lobster Homarus americanus [J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, 2006, 421(1-2): 143-53.[11] Wang S L, Liu C P, Liang T W. Fermented and enzymatic production of chitin/chitosan oligosaccharides by extracellular chitinases from Bacillus cereus TKU027 [J]. Carbohydrate Polymers, 2012, 90(3): 1305-13.[12] Gaill F, Persson J, Sugiyama J, et al. The chitin system in the tubes of deep sea hydrothermal vent worms [J]. Journal of Structural Biology,1992, 109(2): 116-28.
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