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OALib Journal期刊
ISSN: 2333-9721
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微杆菌3-28对萘、菲、蒽、芘的降解
DOI: 10.3724/SP.J.1145.2009.00361, PP. 361-366
Keywords: microbacteriumsp.3-28,pahs,底物浓度,环境因子,降解率
Abstract:
摘要研究了以多环芳烃为唯一碳源富集培养的微杆菌3-28对不同多环芳烃化合物(polycyclicaromatichydrocarbons，pahs)及混合pahs的降解能力，以及在无机基础培养基中生长时pahs浓度与一些主要环境因子如ph值、盐度、温度对细菌降解pahs的影响.结果表明，微杆菌3-28对萘、菲、蒽和芘均有较高的降解能力，112h后萘与菲完全降解，而蒽和芘28d的降解率分别为97.54%、90.2%.初始底物浓度会影响细菌生长速率，底物浓度过高不利于细菌生长.相同培养时间下多底物培养液中的菌群浓度明显高于单底物系统.微杆菌3-28能够在ph6.0~9.0、盐度10~30g/kg，温度40~55℃的环境下生存，并保持较高的降解能力.图8参33
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