The paper presents a procedure for determining the optimal amount of thermal energy profitable operation biogas plant. temperature at which anaerobic fermentation takes place shortens time and production, but also provision higher temperatures requires certain energy, whose consumption reduces effects production system. In this results average outdoor inlet mass in fermenter are shown by months...

Abstrak: Penghasilan enzim lignin peroksidase (LiP) dan mangan peroksidase (MnP) oleh Humicola grisea di dalam fermenter angkut udara diselidiki. Penghasilan optimum parameter yang digunakan pada fermenter ini ialah kadar pengudaraan 1.0 vvm, 1.0% (b/i) glukosa, 10.5 mM (NH4)2HPO4 dan kepekatan inokulum 1.0% (i/i; 6 × 10 spora/ml). Peningkatan sebanyak 52% dalam penghasilan LiP dan 49% dalam Mn...

because of poor survival of probiotic bacteria, microencapsulation evolved from the immobilized cell culture technology used in the biotechnological industry. two probiotic strains, bifidobacterium (bb-12) and lactobacillus acidophilus (la-5) were immobilized in calcium alginate by extrusion method. encapsulation parameters and efficacy of this method were evaluated. growth factors of these two...

The investigations presented and discussed herein establish an enhanced understanding on volatile fatty acid (VFA) production as a function of dairy manure fermenter organic loading (OL) and retention time (RT), first through a factorial of 64 fermentation potential (FP) batch tests, followed by analysis of a continuously operated pilot-scale fermenter. The maximum observed net FP - 0.103 mg VF...

The optimal physical factors affecting enzyme production in an airlift fermenter have not been studied so far. Therefore, the physical parameters such as aeration rate, pH, and temperature affecting PLA-degrading enzyme production by Actinomadura keratinilytica strain T16-1 in a 3 l airlift fermenter were investigated. The response surface methodology (RSM) was used to optimize PLA-degrading en...

The dysgonic fermenter-2 bacterium is a newly recognized fastidious gram-negative bacillus that causes bacteremia and sometimes endocarditis in immunocompromised persons after they are bitten by dogs. To develop an experimental model of this infection, we placed polyethylene catheters across the aortic valves of New Zealand white rabbits, which were inoculated intravenously the next day with dy...

This paper describes the optimization of production of ascosteroside, a novel antifungal agent with an alpha-linked glycoside of a lanosterone-type triterpenoid structure. Glucose, sorbose and inositol were determined to be the best carbon sources for the production of ascosteroside. Temperature affected levels of ascosteroside, with production being highest at 16 degrees C with 1% glucose, and...

Background & Aims of the Study: Extended-spectrum beta-Lactamases (ESBLs) represent a major group of beta-lactamases which are responsible for resistance to oxyimino-cephalosporins and aztreonam and currently being identified in large numbers throughout the world. The objective of this study was to characterize ESBL producers among non-fermenter gram-negative bacteria isolated from burnt patien...