In all biological systems growth is defined as increase of chemical compounds. Bacteria can achieve to balanced growth if they are growing in a medium, which are completely adapted to it. Clostridium chauvoei, (Clostridium feseri) is an anaerobic, spore forming, motile, and polymorph bacteria, which its size varies from 0.5-1 to 3-8 micron and could be observed as individual bacterium, diplo, a...

a newly developed heavy duty diesel engine in dual fuel mode of operation has been studied in detail. the main fuel would be natural gas and diesel oil as pilot injection. the importance and effects of mixture preparation and formation through ports, valves and in cylinder flow field with different swirl ratio and tumble on diesel combustion phenomena is an accepted feature which has been studi...

A two-temperature-stage process was developed for the production of lipopeptides under SSF conditions. The effects of various temperatures, ranging from 25 to 40 °C, on the bacterial growth during the growth stage and on the production of lipopeptides during the productive stage were investigated. The optimum temperatures were found to be 30 °C for the growth of the strain and 37 °C for the bio...

We evaluated the influence of amino acids in improving teicoplanin productivity. Arginine, lysine, and proline were selected for better productivity among 20 amino acids in Erlenmeyer flasks. Proline was finally chosen as the additive for maximum teicoplanin productivity in a 5-liter fermenter. We obtained the highest teicoplanin productivity, 3.12 g/l, on the eighth d in a 75-liter pilot ferme...

A newly developed heavy duty diesel engine in dual fuel mode of operation has been studied in detail. The main fuel would be natural gas and diesel oil as pilot injection. The importance and effects of mixture preparation and formation through ports, valves and in cylinder flow field with different swirl ratio and tumble on diesel combustion phenomena is an accepted feature which has been studi...

The influences of environmental (macro) conditions and those on the cell level are treated from the point of view of heatand mass-transfer in microbial systems. The effects considered are (i) consumption of substrates, (ii) output of products, (iii) production of heat and (iv) aggregation, as far as concerns direct influence on the microenvironment. The other properties which may have indirect ...

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...