March 2018
Energy balance of elephant grass biomass for power generation by direct biomass combustion
In Brazil, elephant grass has been used for thermal energy production, due to the high productivity, energy efficiency, biological nitrogen fixation (BNF) and biomass quality for energy generation by direct burning. The use of biomass depends mainly on the energy balance and biomass characteristics for energy production. The aim of this study was to evaluate the biomass of dry matter yield, qualitative biomass variables...
March 2018
Development of liquid inoculants for strains of Rhizobium tropici group using response surface methodology
Common bean (Phaseolus vulgaris L.) is the most important legume for human consumption in many countries of South and Central America, Asia and Africa. The crop can benefit from the biological nitrogen fixation process, especially when inoculated with elite rhizobial strains. Strains belonging to the “Rhizobium tropici group” are preferred because they show high tolerance to abiotic stresses, but their...
March 2018
Determination of toxicity and chromatographic analysis of spilanthol content in in vitro culture of Spilanthes oleracea Jacq.
Spilanthes oleracea Jacq. has been extensively used due to its pharmacological activities, and it has been considered as a promising vegetable crop. Nodal-segment cultures of S. oleracea were established in order to analyze the content of alkamide spilanthol. On average, 11 buds/nodal segment were developed after 30 days on MS basal salts liquid medium containing 2.22 μM benzyladenine (BA). Regenerated shoots formed...
March 2018
Preliminary studies on the laxative properties of Senna alata L. and Hollandia yoghurttm
Experiments on Senna alata aqueous extract and Hollandia yoghurt were done to determine active compounds responsible for their laxative properties and to further establish sample vulnerability to microbial attack. Phytochemical screening was performed on test substrates to analyze for alkaloids, flavonoids, tannins, saponins, terpenoids and steroids. Escherichia coli (Gram negative), Micrococcus species (Gram positive),...
March 2018
Genetic diversity study of Ethiopian Faba bean (Vicia faba L.) varieties based on phenotypic traits and inter simple sequence repeat (ISSR) markers
Faba bean (Vicia faba L.) is one of the earliest domesticated food legumes of the world. This study was designed to reveal the genetic diversity existing among 32 Ethiopian faba bean varieties grown at three locations (Sinana, Agarfa and Selka) using 23 phenotypic traits and 11 inter simple sequence repeat (ISSR) primers. The combined analysis of variance across the three locations showed highly significant (p<0.05)...
March 2018
Molecular characterization and tissue expression analysis of five genes for chitinase in the red palm weevil, Rhynchophorus ferrugineus (Coleoptera: Curculionidae)
Insect chitinases are hydrolytic enzymes that cleave chitin of the cuticle and peritrophic membrane during molting. Multiple genes encode insect chitinases, which are characterized as having diverse chemical and enzymatic properties depending on the time and the site of expression. This work was done to isolate and characterize chitinase genes from the red palm weevil (RPW), Rhynchophorus ferrugineus (Oliver), a cryptic...
March 2018
Bioactivity guided fractionation of potent antiacne plant extract against Propionibacterium acnes
Propionibacterium acnes (P. acnes) is a commensal anaerobic, Gram positive bacterium that belongs to the normal microflora. P. acnes play an important role in the pathogenesis of various skin infections and diseases. However, the available agents are associated with number of side effects and P. acnes show the genetic base of antibacterial resistance against erythromycin and clindamycin. Therefore, alternative natural...
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