Abbreviation: Afr. J. Biotechnol.
Start Year: 2002
Page 1 of 599, showing 20 records out of 11963 total, starting on record 1, ending on 20
https://doi.org/10.5897/AJB2017.16355[Article Number: 72A7C2D56045]
Chemical composition, in vitro antioxidant and antibacterial activities of essential oil of Lippia sidoides (EOLS) and its major constituent was investigated. Chemical composition was analyzed in a gas chromatograph coupled to a mass spectrometer (GC/MS). Antioxidant activity (AA) was obtained using 2,2-diphenylpicrylhydrazyl (DPPH) radical scavenging assay. Antimicrobial activity was tested using disk-diffusion test... Read more.
https://doi.org/10.5897/AJB2017.16359[Article Number: 68CE78656049]
The present study investigated the removal of toxic pollutants and reduction of heavy metals from tannery wastewater using Chlorella vulgaris. The physiochemical parameters like pH, electrical conductivity (EC), biological oxygen demand (BOD), chemical oxygen demand (COD), total solids (TS), total dissolved solids (TDS), chloride, total hardness (TH), bicarbonate, magnesium, ammoniacal nitrogen, phosphate and heavy... Read more.
https://doi.org/10.5897/AJB2017.16160[Article Number: 1BFCD8956051]
Contact bioefficacy of lantana (Lantana camara L.) leaf extract (LLE) against rape aphids (Brevicoryne brassicae L.) in three rape (Brassica napus L.) seed brands at given time (hours) periods was explored. Samples of pounded young leaves mixed with distilled water (3 kg l-1, 2 kg l-1 and 1 kg l-1) were prepared. Dimethoate (7.5 ml 10 l-1) and distilled water were the positive and negative controls, respectively.... Read more.
https://doi.org/10.5897/AJB2017.16349[Article Number: F666DDD56055]
Although intense research has gone into the exploration of various Combretaceae species towards the discovery of therapeutic relevant compounds, their endophytes have never been explored as potential repositories of alternative sources of novel and medically beneficial equivalents. In the present study, five bacterial endophytes (Lysinibacillus, Staphylococcus, Enterobacter, Pseudomonas and Bacillus species) were... Read more.
https://doi.org/10.5897/AJB2015.14831[Article Number: 54A8DD255913]
In the present study, the isolation, purification and partial characterization of thermostable serine alkaline protease produced from Bacillus thuringinsis SH-II-1A was reported. The culture was isolated from soil of slaughter house waste and identified further from ribosomal sequence. The crude enzyme was purified by ammonium sulfate precipitation, dialysis and Sephadex G-200 gel permeation chromatography up to 17.04... Read more.
https://doi.org/10.5897/AJB2017.16314[Article Number: 79F699955915]
Cucurbit yellow stunting disorder virus (CYSDV) and watermelon chlorotic stunt virus (WmCSV) are the most widespread and damaging viruses to cucurbits in the Middle East. CYSDV and WmCSV are cucurbit-infecting bipartite whiteﬂy-transmitted begomoviruses. Post-transcriptional gene silencing (PTGS) is a universal mechanism by which plants are able to systemically switch off the expression of targeted genes via the... Read more.
https://doi.org/10.5897/AJB2017.16315[Article Number: 84D23C755917]
The existence of Tomato yellow leaf curl virus (TYLCV) was figured out in different locations in Al-Ahsaa of Saudi Arabia. Polymerase chain reaction (PCR) results of samples collected showed that TYLCV existed in all locations. Using AVcore and ACcore primers, begomoviruses family were detected in symptomatic tomato plants and by using TYv2664 and TYc138 (specific primers for the detection of TYLCV), the results proved... Read more.
https://doi.org/10.5897/AJB2017.15989[Article Number: AD002BD55919]
A wide variety of opportunistic pathogens has been detected in hospital surfaces. Medical center surfaces can serve as reservoirs of pathogenic bacteria. Among this pathogens, Pseudomonas species are one of the leading causes of nosocomial infections, frequently found in hospital environments. Polymerase chain amplification system remains one of the best methods for the rapid detection of low numbers of pathogenic... Read more.
https://doi.org/10.5897/AJB2017.16289[Article Number: 9CFD65F55921]
Restoration of Alnus formosana (Burk.) Makino on landslide areas is important for agroforestry, forestry and soil erosion control in Taiwan. To ensure successful reforestation, A. formosana seedlings have to develop strong root system for nutrient and water acquisition as well as anchorage. Inoculating of A. formosana with symbiotic nitrogen-fixing actinobacteria Frankia may help mitigate drought and nutrient... Read more.
https://doi.org/10.5897/AJB2015.15126[Article Number: FABDF5655923]
Biodiesel is derived from renewable sources, such as vegetable oils, by means of a transesterification process in which triacylglycerols are transformed into smaller molecules of esters of fatty acids and glycerol. The transesterification reactions of ‘Gefner’ atemoya (Annona squamosa × A. cherimola) seed oil extracted by pressing (physical) and solvent (chemical) processes were studied, with analysis... Read more.
https://doi.org/10.5897/AJB2017.16300[Article Number: 077C95C55887]
Recently, progressive use of synthetic food additives increase the attention paid on their benefit and toxicity in food, especially for the young. One of these additives is artificial azo dyes tartrazine. This study aimed to provide an outline of the existing evidence on the beneficial and side effect of food additive with special reference to tartrazine on different organ health. The methods include updated search for... Read more.
https://doi.org/10.5897/AJB2017.16230[Article Number: 327357555889]
This study screened four Rhizopus species as biosurfactant producers using different markers. First of all, Rhizopus spp. UCP 1607 was identified as Rhizopus arrhizus by morphological and molecular methods. The production of biosurfactant/bioemulsifier was investigated by submerged fermentation using soybean post-frying oil (5% v/v) and sodium glutamate (1% w/v) medium. The primary markers’ hemolysis and parafilm... Read more.
https://doi.org/10.5897/AJB2017.16274[Article Number: BEA471255891]
The aim of the study was to investigate the bioethanol production potentials by indigenous bacterial isolates screened for amylolytic and cellulolytic activities. Cassava peels were obtained from local ‘garri’ producers, while corn grains and corn cobs were gotten from retailers within the Erinfun farm settlement along Afe Babalola University Road, Ado-Ekiti, Ekiti State, Nigeria on June 4, 2015. The... Read more.
https://doi.org/10.5897/AJB2017.16338[Article Number: 278D73F55893]
Pigeon pea (Cajanus cajan (L.) Millsp.) is an important protein source grown in several tropical and sub-tropical countries, and is considered a multi-purpose plant that is resistant to the conditions where drought and salinity is a common phenomenon. The aim of this study was to evaluate the diversity of rhizobial isolates obtained from root nodules of pigeon pea plants grown in central and southern Ethiopia. A total... Read more.
https://doi.org/10.5897/AJB2017.16306[Article Number: E1616A055809]
Zoom-koom is a popular non-alcoholic beverage in Burkina Faso, which is based on cereals and mainly produced by women with important socio-economic implications. This study aimed to evaluate the effect of controlled fermentation using two selected isolates of lactic acid bacteria (LAB) as starter cultures, on the rheological and hygienic quality of zoom-koom. The starter cultures were used singly in monoculture and both... Read more.
https://doi.org/10.5897/AJB2017.16205[Article Number: 594208855812]
Twenty-eight strains of lactic bacteria were isolated from fermented wheat "hamoum" and phenotypically attributed to the following species: seven strains of Lactococcus lactis subsp. lactis, six strains of Lactobacillus brevis and 15 strains of Lactobacillus plantarum. The acidifying behavior of the strains is considerably variably demanding on considered strain. The amounts of lactic acid produced reached 9.7... Read more.
https://doi.org/10.5897/AJB2016.15619[Article Number: 027D70055814]
Bio-preservation of Nigerian soft-white cheese (wara) in submerged consortium of bacteriocinogenic lactic acid bacteria (LAB) culture was investigated. Lactobacillus acidophilus PIT17 and Lactococcus lactis PIT30 were isolated from pito using the pour plate technique on MRS medium. The selection of L. acidophilus PIT17 and L. lactis PIT30 for the bio-preservation studies were based on their ability to produce... Read more.
https://doi.org/10.5897/AJB2017.16336[Article Number: 2B709B555818]
Okra is a traditional vegetable grown throughout Burkina Faso. Despite a food and non-food valorization of all parts of the plant, its genetic diversity is still little known. Thus, 50 accessions of okra from Burkina Faso were characterized using 19 microsatellite markers in order to determine the level and structure of genetic diversity. The results reveal a total of 34 alleles including 3 rare alleles and a number... Read more.
https://doi.org/10.5897/AJB2017.16051[Article Number: 0CCB56455822]
The antimicrobial activity of essential oils of Boswellia and thyme (Boswellia sp., and Thyme sp.) was evaluated against 20 clinical isolates of Streptococcus pneumoniae and 5 isolates of Klebsiella pneumoniae. Essential oils were prepared using methanol and water (1:1) with HPLC technique. Antimicrobial activity and minimum inhibitory concentration (MIC) were measured using disk diffusion method against 20 isolates of... Read more.
https://doi.org/10.5897/AJB2016.15527[Article Number: 3F5CF6355738]
Successful artificial insemination depends on maintaining longevity of semen in the reproductive tract, and semen characteristics among others. The study compared efficacy of Androhep extender supplemented with 75 mM taurine, 5 m M-cysteine, or 200 mg/l alpha-tocophero on liquid preservation of Kolbroek boar semen characteristics over 24 and 48 h after storage at 17°C. Total motility was evaluated using computer... Read more.
Page 1 of 599, showing 20 records out of 11963 total, starting on record 1, ending on 20