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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/74148

    Title: 幾丁聚醣及其酵素水解物對細菌及果蠅幼蟲之抑制活性
    Other Titles: Inhibitory activities of chitosan and its enzymatic hydrolysates against bacteria and Drosophila larval
    Authors: 林政毅;Lin, Cheng-Yi
    Contributors: 淡江大學化學學系碩士班
    王三郎;Wang, San-Lang
    Keywords: 幾丁聚醣;幾丁質酶;幾丁聚醣酶;酵素水解物;抗菌;果蠅幼蟲;Chitosan;chitinase;chitosanase;enzymatic hydrolysate;antibacterial;Drosophila larval
    Date: 2011
    Issue Date: 2011-12-28 18:10:11 (UTC+8)
    Abstract: 本研究係以Bacillus cereus TKU006、Serratia ureilytica TKU013、Pseudomonas sp.TKU015三株幾丁質酶/幾丁聚醣酶生產菌發酵製備出粗酵素液。以酵素法水解懸浮態幾丁質、水溶性幾丁聚醣,製備不同水解時間之酵素水解物並以其進行抗菌及抗果蠅實驗,探討酵素水解物之對E.coli、B.subtilis及果蠅幼蟲之抑制活性。
    Preparation of crude enzyme solutions from three chitinase/chito- sanase-produced strains, Bacillus cereus TKU006, Serratia ureilytica TKU013, and Pseudomonas sp.TKU015 to hydrolyze prepared from colloidal chitin(CC) and water soluable chitosan(WSC).
    Hydrolysates were collected at several points in time. The bio- activity of these hydrolysates against bacteria, Drosophila larval were studied.
    The inhibitory activity has a significant difference between against E.coli and B.subtilis treating with different hydrolysates. WSC hydrolysates prepared using TKU013 enzyme at hydrolysis time of 1h which had better antibacterial activity against E.coli, IC50=0.1%. WSC/015/12h had better antibacterial activity against B.subtilis, IC50<0.07%.
    CC/015/0h used in anti-Drosophila activity tests shows best insecticidal effect(morality=87.5%).
    Appears in Collections:[Graduate Institute & Department of Chemistry] Thesis

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