搜索结果: 1-15 共查到“理学 Bacillus”相关记录30条 . 查询时间(0.078 秒)
本发明属于环境工程水处理技术领域，具体涉及一种海洋细菌Bacillus sp.GP及其应用。海洋细菌为Bacillus sp.GP，以保藏于中国典型培养物保藏中心，地址：武汉大学，保藏时间为2017年10月20日，保藏编号为：CCTCC M 2017544。本发明从海洋底泥筛选得到海洋土著微生物能够适应复杂的海洋环境，并且能够还原贵金属钯和金。通过本发明中描述的方法得到的纳米钯和纳米金，能够用于加...
在厌氧条件下研究了西南地区一种典型土壤微生物芽孢杆菌Bacillus sp.dwc-2对模拟地下水中U(Ⅵ)的还原行为，重点考察了时间、无机阴离子、腐殖酸（HA）及富里酸（FA）对还原的影响，并利用TEM、EDS、SAED和XPS对还原后的样品进行了表征。结果表明：在pH=7.0、cNaHCO3=5 mmol/L和T=303 K条件下，Bacillus sp.dwc-2对U(Ⅵ)的还原率随时间的增...
Efficacy of Bacillus thuringiensis Cry14 Toxin against Root Knot Nematode, Meloidogyne javanica
nematicidal nematode management tomato
2015/3/13
Two Bacillus thuringiensis strains including ToIr65 and ToIr67 with nematicidal activity against hatched juveniles and
eggs of Meloidogyne javanica were identified by phenotypic, microscopic, 16s rD...
Genetic analysis of two mutants altered with respect to formation of polyhydroxyalkanoic acid and identification of putative RNA helicase, nuclease and gas vesicle genes in {\it Bacillus megaterium\/}
Genetic analysis of two mutants altered with respect to formation of polyhydroxyalkanoic acid and identification of putative RNA helicase nuclease and gas vesicle genes in Bacillus megaterium
2015/1/28
To study polyhydroxyalkanoate (PHA) accumulation and PHA regulation in Bacillus megaterium, transposon mutagenesis with Tn917-LTV1 was carried out and seventy two mutants that produce more or less PHA...
Gene products from Bacillus megaterium involved in the metabolism of polyhydroxyalkanoic acid (PHA) and the biogenesis of PHA inclusion -bodies
Biological sciences Polyhydroxyalkanoic acid Inclusion-bodies Bacillus megaterium Biodegradable polymers
2015/1/28
Polyhydroxyalkanoates (PHAs) comprise a family of macromolecules produced by many bacteria as a carbon and energy reserve and are perceived to have commercial potential as biodegradable thermoplastics...
Effects of Bacillus subtilis KN-42 on Growth Performance, Diarrhea and Faecal Bacterial Flora of Weaned Piglets
Bacterial Community Diarrhea Growth Performance Lactobacillus Weaned Piglets
2016/5/17
This research focused on the effects of different doses of Bacillus subtilis KN-42 on the growth performance, diarrhea incidence, faecal bacterial flora, and the relative number of Lactobacillus and E...
Production of Endoglucanase, Beta-glucosidase and Xylanase by Bacillus licheniformis Grown on Minimal Nutrient Medium Containing Agriculture Residues
Bacillus licheniformis β-Glucosidase Endoglucanase Xylanase
2016/5/16
Bacillus licheniformis was grown in minimal nutrient medium containing 1% (w/v) of distillers dried grain with soluble (DDGS), palm kernel meal (PKM), wheat bran (WB) or copra meal (CM), and the enzym...
Bacillus subtilis Protects Porcine Intestinal Barrier from Deoxynivalenol via Improved Zonula Occludens-1 Expression
Zonula Occludens-1 Porcine Intestinal Epithelial Cell Line (IPEC-J2)
2016/5/16
Intestinal epithelial cells (IECs) forming the barrier for the first-line of protection are interconnected by tight junction (TJ) proteins. TJ alteration results in impaired barrier function, which ca...
Cyclodextrin production by Bacillus lehensis isolated from cassava starch: Characterisation of a novel enzyme
cyclodextrin glycosyltransferase affinity chromatography purification
2014/3/28
The properties of a previously unknown enzyme, denominated cyclodextrin glycosyltransferase, produced from Bacillus lehensis, were evaluated using affinity chromatography for protein purification. Enz...
The Bacillus subtilis and Lactic Acid Bacteria Probiotics Influences Intestinal Mucin Gene Expression, Histomorphology and Growth Performance in Broilers
Probiotic Bacillus subtilis Mucin Gene Expression Small Intestine Broilers
2016/5/10
The aim of the present study was to evaluate the effect of commercial monostrain and multistrain probiotics in diets on growth performance, intestinal morphology and mucin gene (MUC2) expression in br...
Physiological and Biochemical Characteristics and Desilication Ability of Bacillus Mucilaginosus Screened from Poyang Lake Area of Jiangxi Province
Bacillus mucilaginosus Desilication Physiological and Biochemical Character
2011/12/20
18 strains of Bacillus mucilaginosus were sampled from Poyang Lake area of Jiangxi province in China . Morphology and physio-biochemical characteristics and desilication ability on bauxite were studie...
考察了不同搅拌转速、pH值和温度条件下，细胞生长、g-CGT酶产量与培养液中直链麦芽低聚糖积累的关系. 细胞的最大比生长速率为0.2 h-1是g-CGT酶产量从增长到下降的拐点. 发酵液中直链麦芽低聚糖的存在能促进细胞生长并引起胞内的FDP, ATP和G6P含量增加，而对产酶显示出分解代谢阻遏效应. 指数流加结果显示，通过限制细胞的比生长速率，可将阻遏作用控制在较低水平，酶产量得到了大幅度提高，是...
采用化学修饰法研究了史氏芽胞杆菌 Bacillus smithii T7 产耐热菊粉酶活性中心氨基酸残基, 发现该酶活性中心存在一个组氨酸残基和一个谷氨酸 (或天冬氨酸) 残基. 修饰前后的酶动力学参数变化表明组氨酸残基参与了底物的结合和催化过程, 而谷氨酸 (或天冬氨酸) 的羧基亲核攻击促使底物分解. 邹氏作图法证明酶活性中心存在两个必需的色氨酸残基, 荧光和圆二色光谱研究表明色氨酸残基在酶...
Synthesis and Cloning of a Small Bacillus Pheromone Gene (ComXRO-B-2) by Primer-Dimer Formation with PCR
Bacillus mojavensis RO-B-2 ComX pheromone gene TA cloning primer-dimer PCR
2010/4/16
ComX pheromone is the major extracellular signaling peptide stimulating transformation in response to high cell density in Bacillus species. In this study, Bacillus mojavensis ComX(RO-B-2) pheromone g...
摘要从一个工业上生产。a-淀粉酶的枯草杆菌(Baciltus subtilis) BF--7658菌株中分离出自发的依赖链霉素、抗红霉素孢子形成突变体。这些突变体能正常营养生长，但不能正常形成孢子；同时蛋白酶、抗菌素活性降低，转化分析说明这些性状的改变是单一突变的结果。