Screening and Characterization of Nematicidal 
            <i>Bacillus thuringiensis</i> Strains against 
            <i>Ditylenchus destructor</i>

Liu, Jinhui; Yanfei, Hou; Hongsen, Guo; Li, Mingshun; Zhou, Yu

doi:10.3724/sp.j.1145.2012.00235

Chinese Journal of Appplied Environmental Biology

2012

DOI: 10.3724/sp.j.1145.2012.00235

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Screening and Characterization of Nematicidal Bacillus thuringiensis Strains against Ditylenchus destructor

Jinhui Liu¹,

Hou Yanfei²,

Guo Hongsen³

et al.

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Purification and enzymatic identification of an acid stable and thermostable α-amylase fromRhizopus microsporus

Shen

Chen

et al. 2012

J. Inst. Brew.

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Rhizopus microsporus, recently isolated from a solid culture of Heng-Shui Lao-Bai-Gan (HSLBG, a famous distilled liquor in Northern China) was found to produce a novel extracellular acid stable and thermostable a-amylase. This fungal a-amylase was purified using ammonium precipitation, Sephadex G-25 desalination and DEAE-52 cellulose chromatography. Its molecular weight was estimated to be 75 kDa by SDS-PAGE. The optimum pH and temperature of this enzyme was pH 5.0 and 70 C respectively. Thermostability and kinetic analysis through the Arrhenius and Michaelis-Menten equations revealed that this enzyme showed an exceptional activity at low pH and high temperature. A combination of this thermostability and acid stability could be a valuable trait for the efficient hydrolysis of amylose to glucose in large-scale biotechnology applications.

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Purification and enzymatic identification of an acid stable and thermostable α-amylase fromRhizopus microsporus

Shen

Chen

et al. 2012

J. Inst. Brew.

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show abstract

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Screening and Characterization of Nematicidal Bacillus thuringiensis Strains against Ditylenchus destructor

Cited by 1 publication

References 1 publication

Purification and enzymatic identification of an acid stable and thermostable α-amylase fromRhizopus microsporus

Purification and enzymatic identification of an acid stable and thermostable α-amylase fromRhizopus microsporus

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