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.

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

Covalent immobilization of β-galactosidase using a novel carrier alginate/tea waste: statistical optimization of beads modification and reusability
In conclusion, the environmental waste (tea waste) can be used in modern technological industries such as the food and pharmaceutical industry.PMID:38197955 | PMC:PMC10866805 | DOI:10.1007/s00449-023-02959-1 (Source: Bioprocess and Biosystems Engineering)
Source: Bioprocess and Biosystems Engineering - January 10, 2024 Category: Biomedical Engineering Authors: Mohamed A A Abdella Mohamed E Hassan Source Type: research

Valorization of coffee bean processing waste for bioethanol production: comparison and evaluation of mass transfer effects in fermentations using free and encapsulated cells of Saccharomyces cerevisiae
In conclusion, our findings underscore the potential of coffee husk as a valuable substrate for bioethanol production, showcasing its viability in contributing to sustainable and eco-friendly practices.PMID:38195720 | DOI:10.1007/s00449-023-02961-7 (Source: Bioprocess and Biosystems Engineering)
Source: Bioprocess and Biosystems Engineering - January 9, 2024 Category: Biomedical Engineering Authors: G Divyashri N P Tulsi T P Krishna Murthy S Shreyas R Kavya I K Jaishree Source Type: research

Wet anaerobic digestion of organic fraction of municipal solid waste: experience with long-term pilot plant operation and industrial scale-up
Bioprocess Biosyst Eng. 2024 Jan 3. doi: 10.1007/s00449-023-02958-2. Online ahead of print.ABSTRACTThis paper presents the analysis of a pilot anaerobic digestion plant that operates with organic fraction of municipal solid waste (OFMSW) from a wholesale market and can treat up to 500 kg d-1. The process was monitored for a period of 524 days during which the residue was characterized and the biogas production and methane content were recorded. The organic load rate (OLR) of volatile solids (VS) was 0.89 kg m-3 d-1 and the Hydraulic Retention Time (HRT) was 25 d during the process. The yield was 82 Nm3 tons OFMSW-1 biogas,...
Source: Bioprocess and Biosystems Engineering - January 3, 2024 Category: Biomedical Engineering Authors: Omar Anaya-Reza Mar ía F Altamirano-Corona Germ án Basurto-García H éctor Patricio-Fabián Sergio A Garc ía-González Elias Martinez-Hernandez Alfonso Dur án-Moreno Source Type: research

Highly purified charge variants of a proposed biosimilar to Omalizumab: impact on in vitro potency and stability under thermal stress
In this study, highly purified charge variants cluster (acidic, main peak and basic) of biosimilar product of Xolair were assessed for their impact on in vitro potency and stability at different thermal stress conditions (2-8 °C and - 20 °C). The study data indicating purified charge variants (> 90%) have no impact on in vitro potency and are stable at different thermal stress conditions up to a week.PMID:38156991 | DOI:10.1007/s00449-023-02944-8 (Source: Bioprocess and Biosystems Engineering)
Source: Bioprocess and Biosystems Engineering - December 29, 2023 Category: Biomedical Engineering Authors: Tarun Gupta Sriram Seshadri Source Type: research

Lactose hydrolysis in packed-and fluidized-bed reactors using a recombinant β-galactosidase immobilized on magnetic core-shell capsules
The objective of this study was to develop a bioprocess for lactose hydrolysis in diverse dairy matrices, specifically skim milk and cheese whey, utilizing column reactors employing a core-shell enzymatic system featuring β-galactosidase fused to a Cellulose Binding Domain (CBD) tag (β-galactosidase-CBD). The effectiveness of reactor configurations, including ball columns and toothed columns operating in packed and fluidized-bed modes, was evaluated for catalyzing lactose hydrolysis in both skim milk and cheese whey. In a closed system, these reactors achieved lactose hydrolysis rates of approximately 50% within 5 h unde...
Source: Bioprocess and Biosystems Engineering - December 29, 2023 Category: Biomedical Engineering Authors: Adriano Gennari Renate Simon Gaby Renard Jocelei Maria Chies Giandra Volpato Claucia Fernanda Volken de Souza Source Type: research