In the present study, a comprehensive and systematic strategy was described to evaluate the performance of several three-way calibration methods on a bio-analytical problem. Parallel factor analysis (PARAFAC), alternating trilinear decomposition (ATLD), self-weighted alternating trilinear decomposition (SWATLD), alternating penalty trilinear decomposition (APTLD), and unfolded partial least squ...

IN a previous communication dealing with the anaerobic decomposition of rice straw [Acharya, 1935], it was noted that several factors such as temperature and reaction of medium greatly influenced the rate and course of the decomposition. An examination of some of these factors is reported in the present paper. The experimental procedure and methods of analysis adopted were the same as used prev...

Arginine metabolism in Enterococcus faecium sp. GR7 was enhanced via arginine deiminase pathway. Process parameters including fermentation media and environmental conditions were optimized using independent experiments and response surface methodology (central composite design). Fermentation media (EAPM) were optimized using independent experiments which resulted in 4-fold increase in arginine ...

Thirty two curdlan producing bacterial isolates were obtained from eight different Governorates in Arab Republic of Egypt. Four isolates namely K10, K17, K20 and K74 were selected as highly efficient of curdlan production. The effect of some nutritional and environmental factors on curdlan production by those selected isolates was investigated using shake flask as a batch culture. The optimum c...

The rate of spinal trabecular bone loss during one year was measured in 54 patients with inflammatory bowel disease. The mean change in spinal bone mineral content was -5.1 mg/ml K2HPO4, representing 3% of the initial bone mineral content. The rate of bone loss showed a significant negative correlation with body mass index (r = -0.276, p less than 0.05) but no other significant correlations wer...

Fluvoxamine maleate is a selective serotonin reuptake inhibitor, which is used for the treatment of different types of depressive disorders. In the present study, a stability indicating HPLC method was developed and validated for the determination of fluvoxamine maleate. The chromatographic separation was carried out using a Nova-Pak CN column and a mixture of K2HPO4 50 mM (pH 7.0) and acetonit...

A number of microorganisms have the ability to degrade cellulose, agar, bacterial polysaccharides, and blood group substances. The Myxococcus of Morgan and Thaysen (1933) was shown to split blood group A substance in horse saliva but not the A substance in peptone (Landsteiner and Chase, 1935a, b). It also attacked the specific polysaccharide of Shigella dysenteriae (Shiga and Flexner), pneumoc...

Chitinase is one of the most important mycolytic enzymes with industrial significance, and produced by a number of organisms. A chitinase producing isolate Serratia marcescens JPP1 was obtained from peanut hulls in Jiangsu Province, China, and exhibited antagonistic activity against aflatoxins. In this study, we describe the optimization of medium composition with increased production of chitin...

The influence of different carbon and nitrogen sources, of ethanol concentration, the optimal pH, temperature and medium composition were evaluated on extracellular polysaccharides (EPS) synthesis and bacterial growth of Gluconacetobacter hansenii LMG1524, and preliminary characterization of EPS was investigated. The highest EPS yields were obtained using glycerol and ammonium sulphate as carbo...

The comparative evaluation of distinct types of ionic liquid-based aqueous biphasic systems (IL-ABS) and more conventional polymer/salt-based ABS to the extraction of two antioxidants, eugenol and propyl gallate, is focused. In a first approach, IL-ABS composed of ILs and potassium citrate (C6H5K3O7/C6H8O7) buffer at pH 7 were applied to the extraction of two antioxidants, enabling the assessme...