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生理生化方法在蜡蚧轮枝菌及一些相关菌聚类分析上的应用 被引量:1
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作者 阎峻 《辽宁林业科技》 1994年第3期11-14,共4页
本文对蜡蚧轮枝菌及一些相关菌共66个菌株,运用生理生化方法作为形态学研究的辅助,进行了类平均法的系统聚类分析。结果表明这些生理生化方法在轮枝菌的系统分析上具有重要意义。所有菌株可分成8个类聚组,基本上可以把蜡蚧轮枝菌... 本文对蜡蚧轮枝菌及一些相关菌共66个菌株,运用生理生化方法作为形态学研究的辅助,进行了类平均法的系统聚类分析。结果表明这些生理生化方法在轮枝菌的系统分析上具有重要意义。所有菌株可分成8个类聚组,基本上可以把蜡蚧轮枝菌与其他一些菌株区分开,并能够反映出该菌内各种来源不同的品系之间的差异。 展开更多
关键词 蜡蚧轮枝菌 形态学 生理生化法
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Screening of a Novel Bioflocculant-producing Strain and Research on Its Flocculation 被引量:4
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作者 周爱华 梁生康 单宝田 《Agricultural Science & Technology》 CAS 2012年第9期1997-2000,2005,共5页
[Objective] This study aimed to screen a bacterial strain capable of producing bioflocculant. [Method] A bacterial strain T-11 capable of producing bioflocculant was isolated from activated sludge. Detailed tests on t... [Objective] This study aimed to screen a bacterial strain capable of producing bioflocculant. [Method] A bacterial strain T-11 capable of producing bioflocculant was isolated from activated sludge. Detailed tests on the morphological, physiological and biochemical characteristics were carried out and identification was performed to identify the strain. Finally, the bioflocculant was isolated and purified, and the flocculating activity and chemical characteristics were measured. [Result] It was identified as Serratia plumuthica based on its morphological, physiological and biochemical characteristics. This strain secreted flocculant best in a culture medium which included sucrose and NaNO3. The maximal cell growth was achieved within 10 h and the flocculating activity paralleled to it. It was found to be effective for flocculation of kaolin suspension, when added at a final concentration of 0.7 mg/L, over a range of pHs (2-7), and temperature (approximately 30-80 ℃). Chemical analysis indicated that the bioflocculant was an acidic polysaccharide consisting of glucose, glucuronic acid and galactose, talose and altrose. Infrared spectrum analysis also revealed typical characteristics of polysaccharides. [Conclusion] The biofloccu- lants produced by strain T-11 can greatly improve the ability of activated sludge to settle. 展开更多
关键词 BIOFLOCCULANT Flocculating activity POLYSACCHARIDE Serratia plumuthica
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江苏地区古树健康评价体系构建研究
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作者 郑华英 刘云鹏 +2 位作者 解春霞 徐丽丽 孟子翔 《江苏林业科技》 2023年第5期17-23,52,共8页
通过实地调查评估、生理生化指标测定、树干无损检测等方法,结合文献查阅、专家咨询等途径,筛选出适用于江苏地区的古树健康评价核心指标,构建古树健康评价体系。结果显示,实地调查评估法和树干无损检测法确定的各项指标能够真实反映古... 通过实地调查评估、生理生化指标测定、树干无损检测等方法,结合文献查阅、专家咨询等途径,筛选出适用于江苏地区的古树健康评价核心指标,构建古树健康评价体系。结果显示,实地调查评估法和树干无损检测法确定的各项指标能够真实反映古树健康状况;生理生化指标测定法则建议在古树应急诊断中使用。依据建立的古树健康评价体系对溧阳地区21株古树的健康状况进行评价,应用效果良好。 展开更多
关键词 古树 调查评估 生理生化指标测定 树干无损检测 健康评价体系
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辛醇生产废水处理技术 被引量:2
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作者 张婧 《化工环保》 CAS CSCD 北大核心 1998年第5期273-276,共4页
对国内外辛醇生产废水的处理方法作了介绍,并对其中较先进的酸化萃取法和厌氧生化-好氧生化-炭黑吸附法作了详细分析。
关键词 辛醇 萃取 生化生理 废水处理
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Characterization of tricalcium phosphate solubilization by Stenotrophomonas maltophilia YC isolated from phosphate mines 被引量:1
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作者 肖春桥 池汝安 +1 位作者 何环 张文学 《Journal of Central South University》 SCIE EI CAS 2009年第4期581-587,共7页
The phosphate solubilizing characteristics of a strain YC, which was isolated from phosphate mines (Hubei, China), were studied in National Botanical Research Institute’s phosphate (NBRIP) growth medium containing tr... The phosphate solubilizing characteristics of a strain YC, which was isolated from phosphate mines (Hubei, China), were studied in National Botanical Research Institute’s phosphate (NBRIP) growth medium containing tricalcium phosphate (TCP) as sole phosphorus (P) source. The strain YC is identified as Stenotrophomonas maltophilia (S. maltophilia) based upon the results of morphologic, physiological and biochemical characteristics and 16S rRNA sequences analysis. The results show that the strain S. maltophilia YC can solubilize TCP and release soluble P in NBRIP growth medium. A positive correlation between concentration of soluble P and population of the isolate and a negative correlation between concentration of soluble P and pH in the culture medium are observed from statistical analysis results. Moreover, gluconic acid is detected in the culture medium by HPLC analysis. It indicates that the isolate can release gluconic acid during the solubilizing experiment, which causes acidification of the culture medium and then TCP solubilization. S. maltophilia YC has a maximal TCP solubilizing capability when using maltose as carbon source and ammonium nitrate as nitrogen source, respectively, in NBRIP growth medium. 展开更多
关键词 tricalcium phosphate (TCP) Stenotrophomonas maltophilia (S. maltophilia) phosphate mines phosphorus (P) gluconic acid
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Isolation and Characterization of a Methomyl-Degrading Paracoccus sp.mdw-1 被引量:2
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作者 XU Jing-Liang WU Jun +5 位作者 WANG Zhi-Chun WANG Kun LI Meng-Ying JIANG Jian-Dong HE Jian LI Shun-Peng 《Pedosphere》 SCIE CAS CSCD 2009年第2期238-243,共6页
Methomyl, an extremely toxic pesticide, is widely used in agriculture. A strain named mdw-1 capable of degrading methomyl rapidly was successfully isolated from activated sludge in this study. It could utilize methomy... Methomyl, an extremely toxic pesticide, is widely used in agriculture. A strain named mdw-1 capable of degrading methomyl rapidly was successfully isolated from activated sludge in this study. It could utilize methomyl as the sole carbon or nitrogen source. The optimal temperature and medium pH for its growth and methomyl biodegradation were 30℃ and 7.0, respectively. It was identified as a Paracoccus sp. according to its morphological features, physiological and biochemical characteristics, and phylogenetic analysis based on the sequence of 16S rDNA. Gas chromatography-mass spectrometry (GC-MS) analysis showed that methomyl could be completely transformed to S-methyl-N-hydroxythioacetamidate in 10 h of incubation with the isolate mdw-1. 展开更多
关键词 methomyl degradation Paracoccus sp. S-methyl-N-hydroxythioacetamidate 16S rDNA strain mdw-1
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