African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5232

Table of Content: 9 September, 2011; 5(17)

September 2011

Growth response of Pterocarpus soyauxii and Lophira alata seedlings to host soil mycorrhizal inocula in relation to land use types

Deficiency in mycorrhizal inoculum in soils due to land use types (LUT) can be alleviated by quantity and quality inoculum addition. A bioassay was carried out to determine how host soil mycorrhizal inoculum influenced mycorrhizal colonization, carbon allocation and partitioning of seedlings of two native timber species of Cameroon humid forest. Seedlings ofPterocarpus soyauxii and Lophira...

Author(s): N. A. Onguene, L. E. M. Ngonkeu and T. W. Kuyper

September 2011

Response surface methodology for optimizing process parameters for the mass production of Beauveria bassiana conidiospores

Beauveria bassiana is an insect pathogenic fungus and is currently being exploited as an effective commercial mycoinsecticide. Solid state fermentation is the most efficient way to mass produce B. bassiana conidiospores on solid substrates. Statistical optimization strategy was adopted to maximize the conidia production through solid state fermentation. Four substrates viz., rice (polished), crushed...

Author(s): Priyanka Dhar and Gurvinder Kaur

September 2011

Non-typable Haemophilus influenzae (NTHi) is a dominant strain causing invasive diseases in Taiwan

To determine the relations between Haemophilus influenzae (Hi) genotypes (antibiotic resistance and active IgA1 protease) and infectious diseases, strains from infected blood, pus, sputum, bronchial washing and thorax patient samples with invasive diseases were cloned, and assayed for IgA1 protease activity and the enzymic subtype, as well as antibiotic resistance. Clinic samples of patients aged 1 to over 71...

Author(s): Shiping He, Ya-Wen Chang and Ya-Ling Lin

September 2011

Enhanced saccharification of steam explosion pretreated corn stover by the supplementation of thermoacidophilic β-glucosidase from a newly isolated strain, Tolypocladium cylindrosporum syzx4

Newly isolated fungi, strain Tolypocladium cylindrosporum syzx4 from rotten corn stover, can effectively produced extracellular thermoacidophilic β-glucosidase (syzx4) using agro-industrial residues. After purification and characterization, the β-glucosidase was applied to saccharify steam explosion pretreated corn stover (SCS) with commercial celluclast from Trichoderma reesei when...

Author(s): Yibo Zhang, Chengyu Lu, Jingying Tang, Xiaoxiao Yu, Jiahui Lu, Qingfan Meng, Da Liu, Xueqing Zheng and Feng Lin

September 2011

Evaluation of immunogenic properties of monovalent and polyvalent inactivated bovine virus diarrhea virus (BVDV) vaccines

This study is aimed at evaluating the immunogenicity of two inactivated (mono- and polyvalent) vaccines containing bovine virus diarrhea virus (BVDV) reference and field strains. Three experimental groups were formed: 10 calves vaccinated twice (days 1 and 28) subcutaneously (s/c) with 2 ml of inactivated polyvalent vaccine per animal (Group 1); 10 calves vaccinated twice (days 1 and 28) subcutaneously (s/c) with 2...

Author(s): Vladimir S. Kurcubic, Nenad S. Milic, Radojica D. Djokovic and Zoran Z. Ilic  

September 2011

Characterization of biofilm formation by Salmonella enterica Serovar Pullorum strains

Salmonella enterica Serovar Pullorum causes acute or persistent infection in chickens, resulting in significant economic losses. The objective of this study was to evaluate the biofilm-forming ability of S. enterica Serovar Pullorum strains and association with the pathogenicity. A total of 62 S. enterica Serovar Pullorum isolates were measured for biofilm formation by crystal violet staining....

Author(s): Yan Lu, Hongyan Dong, Sujuan Chen, Yiping Chen, Daxin Peng and Xiufan Liu

September 2011

Assessment of the knowledge of prevention of HIV transmission from mother-to-child in an African community

Women living with HIV are faced with lack of adequate information about HIV prevention. This study assessed the level of knowledge of prevention of mother-to-child transmission (PMTCT) in Serowe, Botswana. The objectives of this study were to assess the level of knowledge of the PMTCT programme and vertical transmission among HIV-positive women in Serowe, Botswana and as well as describe the practices of family...

Author(s): O. O. Oguntibeju, M. Kayinda and M. Mokgatle-Nthabu

September 2011

Prevalence of infection with Nisseria Gonorrhoeae and Chlamydia Trachomatis in women visitors of gynecology and obstetrics clinics in Zanjan Province of Iran

Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT) are two of the major causes of sexually transmitted infections (STIs) in many countries. There is little information about the prevalence of STIs in Zanjan Province of Iran. This study determines the prevalence of CT and NG cervical infection in women visitors of gynecology and obstetrics clinics in Zanjan. In this descriptive study,...

Author(s): Baghchesaraei Hamid, Amini Braham and Hossaini Mohtaram

September 2011

Effect of boric acid on the growth and production of β-glucosidase in Paecilomyces variotii

Boric acid was examined for antifungal activity against several species of fungi. The growth and production of β-glucosidase in several strains of fungi were tested in the media containing various concentrations of boric acid. The results obtained indicate that the growth ofTrichoderma strains was reduced with increasing amount of boric acid up to 0.3% (w/v). However, Paecilomyces...

Author(s): Swi See Ang, Abu Bakar Salleh, and Fatimah Abu Bakar, Nor Azah Yusof, Muhammad Zukhrufuz Zaman, and Lee Yook Heng

September 2011

An investigation on antibiotic resistance of Neisseria gonorrhoeae isolated from gonorrheal patients in Zahedan, Iran from 2007 to 2010

Present study was aimed to determine antibiotic susceptibility and penicillinase production by Neisseria gonorrhoeae strains isolated from gonorrheal patients in Zahedan (south-east Iran). In a descriptive study from 2007 to 2010, 400 suspected patients were studied by history review, medical examination, Gram staining and culture in Thayer-Martin medium. Antibiotic susceptibility test of isolated strains was...

Author(s): Mohammad Bokaeian, Mazhar Iqbal Qureshi, Soroush Dabiri and Amir Hossein Mohagheghi Fard

September 2011

Screening of antibiotic sensitivity, antibacterial and enzymatic activities of microbes isolated from ex-tin mining lake

Water sample from ex-tin mining lake was collected and cultured on nutrient agar (NA). Morphology characteristics revealed that isolates WL1 and WL4 were Gram-negative cocci and WL3 was Gram-positive cocci. Meanwhile, WL2 and WL5 were Gram-positive bacilli and spore formers. These isolates were screened for their antibiotic sensitivity against 17 types of antibiotics using Kirby-Bauer method. Antibacterial activity...

Author(s): Ong K. S., Chin H. S. and Teo K. C.

September 2011

Thermodynamics investigation of Ca2+ effect on Troponin-C (TnC): A QM/MM study

Troponin (Tn) is an essential protein in calcium ion settings of skeletal and heart muscle contractions. It has three subcategories (TnC, TnI, TnT) which are connected to filament actin by tropomyosin. TnC controls the calcium in muscle contraction and is the Ca2+-binding subunit of the troponin complex. ATP facilitates separation of myosin from actin filament, eventually making thick filament to slip off thin filament....

Author(s): Mahmoud Raouf  and Leila Mahdavian

September 2011

Parametric optimization of extracellular α-amylase recovery from the fermented bran of Aspergillus awamori MTCC 9997

A newly isolated Aspergillus awamori MTCC 9997 strain from spoiled cooked rice was cultured under solid state using cassava peel powder to produce α-amylase. The effect of extraction medium, solid to solvent ratio, extraction time, temperature and physical state on α-amylase recovery was examined. Among various organic, inorganic solvents and buffer solutions tested, maximum extraction of...

Author(s): Kalaiarasi K. and Parvatham R.

September 2011

Effect of glucose supplementation on Candida albicans virulence in immunosuppressed Swiss albino mice (Mus musculus)

We investigated the effect of dietary carbohydrate supplementation on Candida albicanscolonization using an animal model and a Candida strain with both high phospholipase and proteinase activity. Normal and immunosuppressed mice were inoculated intraperitonially with C. albicans and were allowed free access to drinking water supplemented or not with glucose. Blood and different organs...

Author(s): Emira Noumi, Mejdi Snoussi, Sonia El Ghoul, Mahmoud Rouabhia and Amina Bakhrouf

September 2011

Determination of the effect of light and salt concentrations on Aphanocapsa algal population

The research was on the determination of the effect of light and salt concentrations onAphanocapsa algal population. Microbiological standards were observed in the isolation ofAphanocapsa sp from water sample collected from Shell Petroleum flow station. The effect of 5,000, 3500 and 2,000 lux  light intensities and 10 g/L through 50 g/L salt concentrations on the growth and proliferation...

Author(s): Ifeanyi V. O., Anyanwu B. N., Ogbulie J. N., Nwabueze R. N., Ekezie W. and Lawal O. S.

September 2011

Reclassification of Solimonas soli (Kim et al., 2007) and Singularimonas variicoloris (Friedrich et al., 2008) as Sinobacter soli comb. nov. and Sinobacter variicoloris comb. nov. and emended description of the genus Sinobacter (Zhou et al., 2008)

Three types of strains; CW-KD 4T, MN28T and DCY12T which were published by Zhou et al. (2008) as Sinobacter flavus gen. nov., sp. nov., Friedrich et al. (2008) asSingularimonas variicoloris gen. nov., sp. nov., and Kim et al. (2007) as Solimonas soligen. nov., sp. nov., respectively, were selected and subjected to reclassification analyses using the polyphasic...

Author(s): Junfeng Xu, Xiaoyun Chen, Xiaofu Wang and Yu Zhou

September 2011

Anti-enterovirus 71 activity screening of Taiwanese folk medicinal plants and immune modulation of Ampelopsis brevipedunculata (Maxim.) Trautv against the virus

Enterovirus 71 (EV71) infection caused host immune responses and resulted in severepathogenicity. In this study, a preliminary anti-EV71 activity of 58 Taiwanese folk medicinal plants and further investigations of the anti-EV71 activity and immunomodulatory effect ofAmpelopsis brevipedunculata (Maxim.) Trautv (ABT) were performed. Of the 58 plant extracts, 37 extracts exhibited anti-EV71 activity and strong...

Author(s): Hsing-Wen Hsu, Jen-Hsien Wang, Chaio-Li Liu, Chin-Shuh Chen and Yuan-Chuen Wang

September 2011

Production of glycolipids with antimicrobial activity by Ustilago maydis FBD12 in submerged culture

Ustilago maydis FBD12 is a phytopathogenic fungus that grows in submerged environments and produces different metabolites, such as glycolipids (biosurfanctants), cyclic peptides, tryptophan derivatives, and enzymes. Biosurfactants are molecules with a high surface activity, as well as emulsifying properties. They are secondary metabolites whose main physiological role is to support the growth of microorganisms...

Author(s): Cortes-Sánchez Alejandro, Hernández-Sánchez Humberto and Jaramillo-Flores María

September 2011

Survey of Ascaris lumbricoides among pupils of primary school in Jos south local government area of Plateau State, Nigeria

Ascaris lumbricoides was surveyed among pupils of primary schools in Jos south local government. Four schools were visited: National Research Institute Staff Primary School, Rita Primary School, Joseph Primary School and St Andrew Primary School. A total of 471 samples were collected from pupils of these schools and processed using formol-ether concentration technique. Only 1 (0.2%) pupil from St Andrew Primary...

Author(s): Dangana A., Abayomi R. O., Way G. D. and Akobi O. A.

September 2011

Kinetics and thermodynamics of high level β-glucosidase production by mutant derivative of Aspergillus niger under submerged growth conditions

Gamma rays mediated mutagenesis and subsequent selection on 2-deoxy-D-glucose developed a highly catabolite de-repressed and stable β-glucosidase (BGL) hyper-producer mutant of local Aspergillus niger NIBGE, which has high potential for industrial applications. The M6 mutant showed highest constitutive production of BGL (14,900 IU/L) on glucose as compared to control (5,900 IU/L). Wheat bran was the best...

Author(s): Muhammad Rizwan Javed, Muhammad Hamid Rashid, Zahid Mukhtar, Muhammad Riaz, Habibullah Nadeem, Tayyaba Huma and Nourin Ashiq

September 2011

Prevalence study of cytomegalovirus (CMV) infection among foreign manpower in Jeddah Saudi Arabia

Human cytomegalovirus (HCMV) is a species-specific DNA virus of the Herpetoviridae family. Cytomegalovirus (CMV) is more widespread in developing countries and in areas of low socio-economic conditions. It causes high morbidity and mortality. After primary infection CMV is not eradicated but establishes life-long infection in its host. CMV dispersed and become dormant or latent in multiple end organs, and can later be...

Author(s): N. A. Redwan, M. M. M. Ahmed, and M. S. H. AL Awfi