Polyhydroxyalkanoates (PHA’s) are carbon and energy storage compounds which accumulate intracellulary as granules in certain bacteria during unbalanced growth and in the presence of an excess carbon source. PHAs were well studied regarding their promising applications, physical, chemical and biological properties. PHAs are biodegradable, biocompatible, have good material properties, renewable a...

An experiment was carried out to study the effect of temperature on biology, oviposition and feeding behaviour as well as host preference of Epilachna beetle, Epilachna dodecastigma (Wied.) on eight varieties of brinjal, Solanum melongena Linn. from November, 2009 to June, 2010 maintaining controlled temperatures of 15oC, 25oC and 30oC using an incubator in the Department of Entomology, BAU, My...

Objective: A high performance liquid chromatographic method with ultra violet detection for simultaneous analysis of three sartans (Valsartan, Irbesartan and Telmisartan) has been developed for quality control. Method and Results: Isocratic elution on a LiChrospher C18 column (250 × 4 mm, particle size 5 μm) at the temperature 30oC with a mobile phase consisting of 10mM phosphate buffer: aceton...

Introduction: Nearly four decades of experimental studies have failed to agree on an isotopic composition for solar wind (SW) nitrogen implanted in lunar regolith grains. Estimates of ! 15 N range from > +200 ‰ [1] to < -250 ‰ [2]. Its actual value is crucial, not only for untangling component mixtures in the lunar system but also in elucidating the sources and isotopic evolution of N in other ...

This study aimed to evaluate some microbiological and physical-chemical characteristics of fermented milk beverages collected at the main supermarkets in Belo Horizonte (MG). 40 samples of the products corresponding to five distinct brands were collected. They were submitted to the following analyses: Most Probable Number (MPN) of total (30oC) and thermal tolerant coliforms (45oC), Salmonella s...

Results Materials and Methods Four commercial dyes were used — Remazol® Black BA, Levafix® Blue Ca, Levafix® Yellow CA and Levafix® Red CA (Dystar). A standard anthraquinone dye, Remazol Brilliant Blue R (RBBR, Sigma) was also used. Dye stock solutions were added to solid or liquid decolorization media, up to 200 mg.L-1 final concentration. Rose Bengal Agar and Potato Dextrose Agar (both from D...

In this study, we investigate the interaction of Rhodopseudomonas Palustris (R. Palustris) with montmorillonite clay. The adsorption of bacteria on the clay surface was also determined as a function of the initial bacterial quantity, pH, temperature and ionic strength. At different initial bacterial quantities, the percentage of bacteria adsorbed ranged from 61.07% to 77.57%, and the higher per...

A simple, rapid and reliable method of high performance liquid chromatography (HPLC) was developed for the simultaneous determination of bioactive compounds in oolong teas. The optimized method consisted of the use of a C18 reversed-phase column, an isocratic elution system (2 ml/min) of water:acetonitrile (87:13) containing 0.05% trifluoroacetic acid and the detection wavelength of 210 nm. The...

The purpose of this study was to isolate cellulolytic enzyme producing bacteria which may able to utilize banana pseudostem as sole carbon source for production of cellulolytic enzymes. This was attempted by isolating 10 bacteria from banana pseudostem waste. Out of the screened, isolate NAULH-5 showed high cellulolytic activity. The isolate NAULH-5 produced highest 5.97 U/mg endoglucanase, 2.2...

This survey focusing on the identification and characterization of the bacteria inhabiting the arsenic (As) and lead (Pb) contaminated regions near the industrial zone of the eastern coast of the Nile valley at Beni-Suef, Egypt. The preliminary results showed that the Arsenic and Lead recorded high levels of contamination (ranging from 4.88-68.8 mg/kg of dry soil for arsenic and 13.6-242.12 mg/...