Bioprocess and Biosystems Engineering This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Facilitating nitrification and biofilm formation of Vibrio sp. by N-acyl-homoserine lactones in high salinity environment
This study evaluated the roles and release patterns of AHLs in Vibrio sp. LV-Q1 under high salinity condition. Results showed that Vibrio sp. primarily secretes five AHLs, and the AHLs activity is strongly correlated with the bacterial density. Exogenous C10-HSL and 3OC10-HSL were found to significantly enhance ammonium removal, while making a minor contribution to the growth rate. Both the C10-HSL and 3OC10-HSL promoted the biofilm formation of Vibrio sp. with an enhancement of 1.64 and 1.78 times, respectively. The scanning electron microscope (SEM) and confocal laser scanning microscope (CLSM) observations confirmed the...
Source: Bioprocess and Biosystems Engineering - February 12, 2024 Category: Biomedical Engineering Authors: Zhixiang Gao Ying Wang Hu Chen Yongkang Lv Source Type: research

pH-dependent and whole-cell catalytic decolorization of dyes using recombinant dye-decolorizing peroxidase from Rhodococcus jostii
Bioprocess Biosyst Eng. 2024 Feb 7. doi: 10.1007/s00449-024-02968-8. Online ahead of print.ABSTRACTDyes in wastewater have adverse effects on the environment and human health. Dye-decolorizing peroxidase (DyP) is a promising biocatalyst to dyes degradation, but the decolorization rates varied greatly which influencing factors and mechanisms remain to be fully disclosed. To explore an effective decolorizing approach, we have studied a DyP from Rhodococcus jostii (RhDyPB) which was overexpressed in Escherichia coli to decolorize four kinds of dyes, Reactive blue 19, Eosin Y, Indigo carmine, and Malachite green. We found the ...
Source: Bioprocess and Biosystems Engineering - February 7, 2024 Category: Biomedical Engineering Authors: Xiaoyan Duan Qian Pi Lei Tang Source Type: research

3D bioprinting of microorganisms: principles and applications
In conclusion, the 3D bioprinting of microorganisms marks a paradigm leap in microbial bioprocess engineering and has the potential to transform many application areas. The ability to design the spatial arrangement of various microorganisms in functional structures offers unprecedented possibilities and ultimately will drive innovation.PMID:38296889 | DOI:10.1007/s00449-023-02965-3 (Source: Bioprocess and Biosystems Engineering)
Source: Bioprocess and Biosystems Engineering - January 31, 2024 Category: Biomedical Engineering Authors: Josha Herzog Lea Franke Yingyao Lai Pablo Gomez Rossi Janina Sachtleben Dirk Weuster-Botz Source Type: research

Induction of antioxidant activities of Arthrospira platensis and Chlorella vulgaris by modified culture conditions
In this study, it was aimed to develop a bioprocess for the enhancement of antioxidant properties of these two microalgae by evaluating the effect of different culture conditions. With this aim, the impacts of light intensity/reactive oxygen species and nitrogen sources/reactive oxygen species were evaluated for the A. platensis and C. vulgaris cells, respectively. Results showed that the antioxidant potential of A. platensis was found to be correlated with the phycocyanin and total phenolic content of cells, and 80 µmol photons m-2 s-1 light intensity induced antioxidant activity in a two-step cultivation mode. For C. vu...
Source: Bioprocess and Biosystems Engineering - January 29, 2024 Category: Biomedical Engineering Authors: Bahar Aslanbay Guler Zeliha Demirel Esra Imamoglu Source Type: research

A new isolate cold-adapted Ankistrodesmus sp. OR119838: influence of light, temperature, and nitrogen concentration on growth characteristics and biochemical composition using the two-stage cultivation strategy
Bioprocess Biosyst Eng. 2024 Jan 28. doi: 10.1007/s00449-023-02964-4. Online ahead of print.ABSTRACTNatural-based chemicals from microalgae such as lipids and pigments are the interests in industries and the bioeconomy. Cold-adapted Ankistrodesmus sp. OR119838, an isolated strain from Cheshmeh-Sabz Lake in northeastern Iran, was cultivated using a two-stage culture strategy under different environmental conditions. With doubling the nitrate concentration at the vegetative stage (170 mg/L) and increasing the light intensity (180 µmol photons/m2/s) the highest specific growth rate (0.61 ± 0.02 per day) and biomass producti...
Source: Bioprocess and Biosystems Engineering - January 28, 2024 Category: Biomedical Engineering Authors: Azar Rezaei Monireh Cheniany Hossein Ahmadzadeh Jamil Vaezi Source Type: research

Retraction Note: Nickel oxide nanoparticles synthesis using plant extract and evaluation of their antibacterial effects on Streptococcus mutans
Bioprocess Biosyst Eng. 2024 Feb;47(2):299. doi: 10.1007/s00449-024-02967-9.NO ABSTRACTPMID:38253893 | DOI:10.1007/s00449-024-02967-9 (Source: Bioprocess and Biosystems Engineering)
Source: Bioprocess and Biosystems Engineering - January 22, 2024 Category: Biomedical Engineering Authors: Nastaran Chokhachi Zadeh Moghadam Saade Abdalkareem Jasim Fuad Ameen Dalal H Alotaibi Marcos A L Nobre Hanen Sellami Mehrdad Khatami Source Type: research

Synergic association of the consortium Arthrospira maxima with the microalga growth-promoting bacterium Azospirillum cultured under the stressful biogas composition
Bioprocess Biosyst Eng. 2024 Feb;47(2):181-193. doi: 10.1007/s00449-023-02947-5. Epub 2024 Jan 17.ABSTRACTThe present study evaluates the association of the blue-green microalga Arthrospira maxima (Spirulina), which is known for its CO2 fixation, biomass, and high-value metabolite production, with the microalga growth-promoting bacterium Azospirillum brasilense under the stressful composition of biogas. The results demonstrated that A. maxima co-cultured with A. brasilense under the high CO2 (25%) and methane (CH4; 75%) concentrations of biogas recorded a CO2 fixation rate of 0.24 ± 0.03 g L-1 days-1, thereby attaining a ...
Source: Bioprocess and Biosystems Engineering - January 17, 2024 Category: Biomedical Engineering Authors: Francisco J Choix Oskar A Palacios Pedro Mondrag ón-Cortez H éctor Ocampo-Alvarez Amayaly Becerril-Espinosa Martha A Lara-Gonz ález Eduardo Ju árez-Carrillo Source Type: research

Design parameters comparison of bubble column, airlift and stirred tank photobioreactors for microalgae production
In this study, three different photobioreactor types (stirred tank, airlift, bubble column) were characterized and compared for microalgae production. Hydrodynamics, mass transfer, and power consumption were determined for various aeration rates (0.9, 1.2, 1.5 L/min), and stirring speeds (100, 200 rpm), and Chlorella sorokiniana growth performance was compared under the conditions that provided the highest volumetric mass transfer and the lowest mixing time. Photo-bioreactor homogenization was good as indicated by low mixing times (< 10 s). Bubble column had the highest volumetric mass transfer due to its sparger design...
Source: Bioprocess and Biosystems Engineering - January 16, 2024 Category: Biomedical Engineering Authors: Basar Uyar Moussa Djibrine Ali G ülsüm Ebru Ozer Uyar Source Type: research