A pilot-scale production of lipase using palm oil mill effluent (POME) as a fermentation basal medium was carried out, and parameters for immobilization of the produced lipase were optimized. Lipase production in a 300-L bioreactor was performed using two proposed strategies, constant power per volume (P/V) and constant tip speed. Moreover, lipase immobilization on different materials was also ...

The root-knot nematode (Meloidogyne spp.) is one of the principal nematode pests of field and vegetable crops in the southern United States (6). Meloidogyne spp. are generally not uniformly distributed in naturally infested field sites, and sites frequently contain more than one species, thus complicating the evaluation of breeding lines for nematode resistance. To facilitate evaluation of nema...

Dextran a bacterial exopolysaccharide and a long chain polymer of glucose is produced by different microorganisms like Leuconostoc mesenteroides, Lactobacillus spp, Weissella spp and Streptococcus mutans. It has a wide range of application in the food, pharmaceutical and other industries and so is emerging as new and industrially significant product. In the present study the cells of Weissella ...

Microbial lipid production from oleaginous yeasts is a promising process for the sustainable development of microbial biodiesel industry. However, feedstock cost poses an economic problem biodiesel. After extraction, yeast biomass can be used as organic source production. In this study, volatile fatty acids (VFAs), produced via anaerobic digestion lipid-extracted (LEY) residue, were utilized ca...

When a culture of Staphylococcus in the logarithmic period of growth is exposed to penicillin in appropriate concentration, growth of the bacteria is stopped promptly. If within a short time the penicillin is removed, no decrease in population of viable cells occurs, but, after a lag period, growth is resumed (Parker and Marsh, 1946). In earlier work it was shown that this effect occurred even ...

The interest in the production of lactic acid has increased due to its wide range of applications. In the present study, the variables that affect fermentative D(-) lactic acid production were investigated: neutralizing agents, pH, temperature, inoculum percentage, agitation, and concentration of the medium components. An experimental design was applied to determine the optimal concentrations o...

The probability of HIV-1 transmission in a small blood exposure such as a needlestick injury or an unsafe medical injection has been estimated indirectly. Now that several comparable laboratory simulations have provided data on inoculum volumes for such exposures, the epidemiological evidence supporting these estimates can be validated and qualified using dosimetry. This review of data on infec...

We analyzed fosfomycin susceptibility results in Pseudomonas aeruginosa clinical isolates obtained by MIC gradient strips and disk diffusion methods using two different inocula, 10(8) and 10(6) CFU/ml, and compared them to the agar dilution reference method. Essential and categorical agreements were 93.6% and 95%, respectively, for the 10(6) CFU/ml alternative inoculum, and they were 67.6% and ...

This study assesses the methane production potential for Anaerobic Digestion of Pig Slurry, using two different Substrate to Inoculum Ratios, 0.65, and 1, its comparison with theoretical prediction. The Specific Biogas Production, Methane average content were determined both experiments adjusted Standard Temperature (273.15 K) Pressure (1 atm). results reached in this show that experience condu...