August 2009
Production characteristics and properties of cellulase/ polygalacturonase by a Bacillus coagulans strain from a fermenting palm-fruit industrial residue
A Bacillus coagulans strain isolated from palm fruit husk was tested for abilities to hydrolyse plant structural polysaccharides through the depolymerising activities of carboxymethylcellulase and polygalacturonase. The two enzymes were produced using solid substrate fermentation. Both had a working pH range of 4 - 9 with an optimum pH of 6.0 for the carboxymethylcellulase and 7.0 for the polygalacturonase....
August 2009
Biomolecular and phytochemical analyses of three aquatic angiosperms
Aquatic plants produce a variety of compounds of known therapeutic properties and can be utilized as food and feed. These substances are used for developing new antimicrobial drugs. The present study deals with three aquatic plants dominant in Warangal district A. P. region Eichhornia crassipes, Ipomoea aquatica and Nymphaea pubescens were selected. These three aquatic angiosperms were analysed for their...
August 2009
Antimicrobial activity of the essential oil of Cyclotrichium niveum (Boiss.) Manden. Et Scheng
The present study was designed to examine in vitro antimicrobial and antifungal activities of the essential oil of Cyclotrichium niveum. The major constituents of the essential oil were determined as pulegone (50.46%) and iso-menthone (34.53%).The antimicrobial activity of the oil was also tested against gram-positive and -negative bacteria and fungus using a disc-diffusion method and the minimal...
August 2009
A salt lake extremophile, Paracoccus bogoriensis sp. nov., efficiently produces xanthophyll carotenoids
A Gram-negative obligate alkaliphilic bacterium (BOG6T) that secretes carotenoids was isolated from the outflow of Lake Bogoria hot spring located in the Kenyan Rift Valley. The bacterium is motile by means of a polar flagellum, and forms red colonies due to the production of xanthophyll carotenoid pigments. 16S rRNA gene sequence analysis showed this strain to cluster phylogenetically within the genusParacoccus. Strain...
August 2009
Agronomic and phytochemical characterization of Cyclanthera pedata Schrad. cultivated in central Italy
The aims of this study were to provide an agronomic and phytochemical characterization of Cyclanthera pedata Schrad. (Cucurbitaceae family) and assess its potential for adaptation to the soil and climate conditions of Italy. At each harvest date, characteristics of seed present in the harvested fruits were analyzed with germination tests to study the influence of temperature and light conditions. In addition,...
August 2009
Loop mediated isothermal amplification (LAMP) for rapid detection of HBV in Iran
Hepatitis B virus (HBV) is one of the most important factors for hepatocellular carcinoma and a liver disease that seems 350 - 400 million persons are infected with all over the world. Loop mediated isothermal amplification (LAMP) is a novel nucleic acid amplification technique with high specificity and sensitivity which has been done under isothermal condition. In this study we tried to apply LAMP technique for rapid,...
August 2009
Bovine tuberculosis in a dairy cattle farm as a threat to public health
Bovine tuberculosis (BTB) remains a disease of economic and public health importance in developing countries. In countries where bovine milk is not pasteurized before use, bovine tuberculosis has emerged as the single major cause of extra-pulmonary human tuberculosis. The aim of this study was to estimate the incidence of bovine tuberculosis in 46 suspected cattle maintained in a private farm at Egypt using the single...
August 2009
Identification of lactic acid bacteria isolated from traditional Sudanese fermented camel’s milk (Gariss)
From 12 samples of gariss, a Sudanese traditionally fermented camel's milk, 24 lactic acid bacteria were isolated and phenotypically characterized by biochemical tests and their ability to ferment different carbohydrates. Analysis of the observed data resulted in classifying the isolates into 11 groups, each group containing one or more isolates, 2 major groups were identified, the larger one composed of 7...
August 2009
In vitro antibacterial activity of extracts of Mimusops elengi against gram positive and gram negative bacteria
The extracts of Mimusops elengi L. (family: Sapotaceae) bark, fruit and seed were evaluated for antibacterial activity by using spectrophotomertic method against gram positive and gram negative strains viz. Nocardia asteroids NRRL 174,Micrococcus luteus ATCC 10240, Bacillus subtilis PCSIRB 248, Bacillus licheniformis NCL 2024, Proteus mirabilis ATCC 29425...
August 2009
Chemical composition and in vitro antimicrobial and antioxidant activities of the essential oil of Nepeta nuda L. subsp. Albiflora (Boiss.) gams
The chemical composition of Nepata nuda essential oil was hydrodistilled and characterized by gas chromatography-mass spectrometry (GC-MS) and altogether 24 components were detected. The main constituents were trans-caryophyllene (23.9%), isopulegone (12.6%), cis-sabinol (10.1%), and b-pinene (10.0%). Antimicrobial activity of the oil against Gram-positive and -negative bacteria and fungus, was...
August 2009
A suitable model of microbial growth
A microbial growth model with three interpretable parameters was introduced in this study. This model, which was only applicable up to the early stationary phase of the microbial growth, was used to describe the published isothermal growth curves ofListeria monocytogenes in milk at 1.5 - 16°C and temperature dependence of its parameters was fitted by ad hoc empirical secondary models. Published isothermal...
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