The basic characteristic of batch bioreactors is their inability to inflow or outflow the substances during fermentation process. This follows in simple construction and maintenance, which significant advantage bioreactors. Unfortunately, this also results current industrial laboratory control production process duration. In some recent studies, it was shown that changing temperature could infl...

The aim of this work was to assess the performances wine byproduct biomass for hydrogen production by dark fermentation. Grape must deposits from two grape varieties (Pinot Gris and Chardonnay) were considered, either with external microbial inoculum or without. We show that residues contain endogenous microflora, well adapted their environment, which can degrade sugars (initially contained in ...

A dissolved methane sensor based on silicone tube was designed, constructed and optimized.The silicone tube diameter, silicone tube length and helium flow rate (as the carrier gas(were considered as process parameters to be optimized.A continuous stream of helium (50 mL/min) was directed through the tubing, sweeping out the...

Lactic acid bacteria (LAB) with potential for the development of multi-product processes are necessary valorization side streams obtained during biotechnological production lactic (LA). In this study, 14 LAB strains isolated from pineapple agro-industrial residues in Costa Rica were cultivated microplates, and six highest growth selected fermentation microbioreactors to evaluate LA acetic acid,...

The culture medium in many fermentations is a non-Newtonian fluid. In bacterial alginate batch production, the broth becomes more pseudoplastic as concentration increases, which impairs mixing process. This work characterizes effect of interaction between changing rheology and impeller on bioreactor fluid dynamics. Experimentally, fermentation with evolving reproduced. Three stages are mimicked...

As an anaerobic butyrate-producing bacterium, Clostridium cellulovorans can secrete a variety of extracellular enzymes to degrade plant-based cellulose. However, with glucose as the carbon source, it still secretes large amount protein in broth. The metabolism and regulation are obscure need be further studied. Hence, this study, C. was used conduct fed-batch fermentation microcrystalline at pH...

Miniature parallel bioreactors are becoming increasingly important as tools to facilitate rapid bioprocess design. Once the most promising strain and culture conditions have been identified a suitable scale-up basis needs to be established in order that the cell growth rates and product yields achieved in small scale optimization studies are maintained at larger scales. Recently we have reporte...

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 United States generates nearly 325 billion gallons of wastes and by-products during the processing of foods. Whey is a by-product produced in cheese industry and it is estimated that as much as 40-50% of the whey produced is disposed of as sewage or applied to agricultural lands. The remaining 50-60% is being used primarily for animal feed or for human food. Whey contains high quantity of l...