Bioprocess and Biosystems Engineering
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New insight into the role of oxygen supply for surfactin production in bench-scale bioreactors using induced surface aeration
Bioprocess and Biosystems Engineering - Tập 45 - Trang 2031-2041 - 2022
Surfactin biosurfactant produced by Bacillus sp. has been studied, because it has enormous potential in several applications in the oil and cosmetics industry. The cultivation conditions for obtaining this bioproduct, however, still require attention, as, for example, parameters related to oxygen supply and consumption. In this study, different volumetric oxygen transfer coefficient (KLa) levels (......
Mixotrophy in Synechocystis sp. for the treatment of wastewater with high nutrient content: effect of CO2 and light
Bioprocess and Biosystems Engineering - Tập 42 - Trang 1661-1669 - 2019
Synechocystis sp. has remarkable mixotrophic capabilities, as well as an efficient exploitation of nitrogen and phosphorus, that may be applied in wastewater treatment based on cyanobacteria. To better investigate the exploitation of algal mixotrophy in bioremediation, this species was used in axenic respirometric tests to ascertain the effect of high light and non limiting CO2 supply on the overa......
Comparison of anaerobic digesters performance treating palmitic, stearic and oleic acid: determination of the LCFA kinetic constants using ADM1
Bioprocess and Biosystems Engineering - Tập 43 - Trang 1329-1338 - 2020
In this work, the process performance of three parallel anaerobic digesters was evaluated while treating emulsified long-chain fatty acids (LCFA) (i.e., palmitic, stearic and oleic acid) at two different organic loading rates (OLR) (2 and 4 g L−1 day−1). The digester treating palmitic acid achieved a biogas yield of 0.42 ± 0.05 L g−1 COD with a digester effluent COD of 2.3 ± 0.4 g L−1 and VFA conc......
Kiểm soát hình thái của nấm sợi bằng các vi hạt để tăng cường sản xuất β-mannanase Dịch bởi AI
Bioprocess and Biosystems Engineering - Tập 39 - Trang 1391-1399 - 2016
β-mannanase được sản xuất chủ yếu bởi các loài Aspergillus và có khả năng phân hủy các liên kết β-1,4-mannose của galactomannans. Nghiên cứu này được thực hiện nhằm nâng cao sản xuất mannanase bằng cách sử dụng talc và oxit nhôm như các vi hạt, điều khiển hình thái tế bào của Aspergillus sojae tái tổ hợp trong môi trường glucose và chiết xuất từ quả carob. Cả hai loại vi hạt đều cải thiện sự phát ......
#β-mannanase #Aspergillus #talc #oxit nhôm #môi trường lên men
Aerobic denitrification by Pseudomonas stutzeri C3 incapable of heterotrophic nitrification
Bioprocess and Biosystems Engineering - Tập 38 - Trang 407-409 - 2014
An aerobic denitrifier was isolated from activated sludge and the isolate possessed an average nitrate removal efficiency of 95.8 % in 24 h, with the maximum nitrite accumulation of 25.6 mg/l. The bacterium could not conduct heterotrophic nitrification. The results of PCR indicated that the strain lacked the gene of amoA. The phylogenetic tree indicated a clear evolutionary divergence that Pseudom......
Effects of the changes in enzyme activities on metabolic flux redistribution around the 2-oxoglutarate branch in glutamate production by Corynebacterium glutamicum
Bioprocess and Biosystems Engineering - Tập 25 - Trang 291-298 - 2003
An experimental method for metabolic control analysis (MCA) was applied to the investigation of a metabolic network of glutamate production by Corynebacterium glutamicum. A metabolic reaction (MR) model was constructed and used for flux distribution analysis (MFA). The flux distribution at a key branch point, 2-oxoglutarate, was investigated in detail. Activities of isocitrate dehydrogenase (ICDH)......
Improvement of foam breaking and oxygen-transfer performance in a stirred-tank fermenter
Bioprocess and Biosystems Engineering - Tập 28 - Trang 235-242 - 2005
This study examined a stirred-tank fermenter (STF) containing low-viscosity foaming liquids with an agitation impeller and foam-breaking impeller mounted on the same shaft. Results showed that the performance of the foam-breaking impeller can be improved by changing a conventional six-blade turbine impeller into a rod impeller as the agitation impeller. The volumetric oxygen-transfer coefficient, ......
Reversible immobilization of Candida rugosa lipase on fibrous polymer grafted and sulfonated p(HEMA/EGDMA) beads
Bioprocess and Biosystems Engineering - - 2010
Enhancement of adenosine production by Bacillus subtilis CGMCC 4484 through metabolic flux analysis and simplified feeding strategies
Bioprocess and Biosystems Engineering - Tập 36 - Trang 1851-1859 - 2013
The objective of this research was to understand how the initial glucose concentration influences adenosine (AR) production and metabolic flux shift on the cultivation of Bacillus subtilis CGMCC 4484. Experiments confirmed that initial glucose concentration affects cell growth, AR production and metabolites, significantly. The flux distribution at the key nodes of glucose-6-phosphate (G6P), pyruva......
Electrochemically mediated bioconversion and integrated purification greatly enhanced co-production of 1,3-propanediol and organic acids from glycerol in an industrial bioprocess
Bioprocess and Biosystems Engineering - - 2023
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