Live diatoms as potential biocatalyst in a microbial fuel cell for harvesting continuous diafuel, carotenoids and bioelectricity

Khan, Mohd Jahir; Das, Sovik; Vinayak, Vandana; Pant, Deepak; Ghangrekar, Makarand M.

doi:10.1016/j.chemosphere.2021.132841

Cited by 31 publications

(9 citation statements)

References 56 publications

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“…Such kind of microbial fuel cell that hybridize with an algal photobioreactor separated by a proton exchange membrane such as a clay plate which are economical it can reduce the cost of astaxanthin production when upscaled [ 69 , 70 , 71 ]. Although in a microbial fuel cell, only electrogenic microbes are used at the anode, recently Khan et al 2022 [ 72 ] found that diatoms (brown microalgae) are electrogenic when used at the anode due to NOX - ions produced in diatoms for iron reduction. The MFC thus produces electricity (12.6 mWm −2 ), lipids (22.31 μg mL −1 on 15th day) and pigments (4.890 μg mL −1 on 15th day).…”

Section: Cultivation and Accumulation Of Astaxanthin In Hae...mentioning

confidence: 99%

Astaxanthin as a King of Ketocarotenoids: Structure, Synthesis, Accumulation, Bioavailability and Antioxidant Properties

et al. 2023

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Astaxanthin (3,3-dihydroxy-β, β-carotene-4,4-dione) is a ketocarotenoid synthesized by Haematococcus pluvialis/lacustris, Chromochloris zofingiensis, Chlorococcum, Bracteacoccus aggregatus, Coelastrella rubescence, Phaffia rhodozyma, some bacteria (Paracoccus carotinifaciens), yeasts, and lobsters, among others However, it is majorly synthesized by Haematococcus lacustris alone (about 4%). The richness of natural astaxanthin over synthetic astaxanthin has drawn the attention of industrialists to cultivate and extract it via two stage cultivation process. However, the cultivation in photobioreactors is expensive, and converting it in soluble form so that it can be easily assimilated by our digestive system requires downstream processing techniques which are not cost-effective. This has made the cost of astaxanthin expensive, prompting pharmaceutical and nutraceutical companies to switch over to synthetic astaxanthin. This review discusses the chemical character of astaxanthin, more inexpensive cultivating techniques, and its bioavailability. Additionally, the antioxidant character of this microalgal product against many diseases is discussed, which can make this natural compound an excellent drug to minimize inflammation and its consequences.

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Section: Cultivation and Accumulation Of Astaxanthin In Hae...mentioning

confidence: 99%

Astaxanthin as a King of Ketocarotenoids: Structure, Synthesis, Accumulation, Bioavailability and Antioxidant Properties

et al. 2023

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“…Both anodic and cathodic chambers house two electrodes named anode and cathode, respectively, which are connected via an external circuit that completes the transfer of electrons from the anode to the cathode [ 95 ]. A MFC contains microorganisms that can produce electrons from organic matter by intercellular metabolism and then transfer these electrons to the anode [ 96 ]. However, the transferring of intercellular electrons from the cell membrane is difficult due to the insulation of the cell membrane [ 97 ].…”

Section: Application Of Bacterial Signalling Mechanisms In Metsmentioning

confidence: 99%

Role of bacterial quorum sensing and quenching mechanism in the efficient operation of microbial electrochemical technologies: A state-of-the-art review

Chakraborty,

Bashir,

Sirotiya

et al. 2023

Heliyon

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“…These co-cultivation systems benefit the existing pair or microbial consortia via cell−cell interaction (quorum sensing), mutualism/commensalism, providing protection to existing species, distributing the metabolic load, and evolving into a stable microbial consortium through natural selection. 241 Such natural systems can be suitably utilized by employing the engineering optimization principles to the mixture of microalgae−microalgae, microalgae−bacteria, microalgae−yeast, microalgae−fungi, or a mixture of all to avail economic algal-based bioenergy. To create an algal biorefinery platform for bioenergy generation, multiple high-value bioproducts, and environmental bioremediation all at once, cocultivation is a key factor.…”

Section: Microalgal Consortium and Co-culturing Techniquesmentioning

confidence: 99%

“…The co-cultivation of microalgae with other microbes has gained attention recently as a means of improving the biomass and lipid output. These co-cultivation systems benefit the existing pair or microbial consortia via cell–cell interaction (quorum sensing), mutualism/commensalism, providing protection to existing species, distributing the metabolic load, and evolving into a stable microbial consortium through natural selection . Such natural systems can be suitably utilized by employing the engineering optimization principles to the mixture of microalgae–microalgae, microalgae–bacteria, microalgae–yeast, microalgae–fungi, or a mixture of all to avail economic algal-based bioenergy.…”

Section: Recent Technical Advancements To Address Industrial-scale Pr...mentioning

confidence: 99%

Microalgal-Based Bioenergy: Strategies, Prospects, and Sustainability

2022

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The fuel crisis with the slumping reserves of fossil fuels and the exponential increase in the demand of energy necessitate a paradigm shift to a more sustainable and eco-friendly energy system. Microalgal biofuel has been recognized as one of the most prominent and versatile alternative renewable energy sources because it can be converted into a wide array of biofuels, such as biodiesel, bioethanol, bioelectricity and biogases such as syngas, methane, hydrogen, and hythane etc., with a lower carbon emission profile. To attain the economic viability of algal fuels, a collective biorefinery approach addressing both the operational and technical limitations is quintessential. The current review critically analyzes and categorizes energy aspects of microalgae through various direct and indirect approaches with the perspective of a circular economy. These approaches include complicated thermochemical and biochemical processes integrating the recovery of a wide range of value-added products apart from biofuels, thus defining a cascading approach for a multiproduct-based biorefinery model. A glimpse of recent technological advancements comprising hybrid cultivation systems, prospects of co-culturing, and the role of automated/modeling approaches in the industrial-scale production of "algal-based bioenergy" is also discussed in detail. Further, the review has also scrutinized and highlighted the developments and bottlenecks in genetic and molecular aspects of strain improvement for bioenergy production. Furthermore, the study also correlated the socioeconomic and environmental impacts of producing this green energy by evaluating the prospects and pitfalls to obtain a holistic picture on this alternative fuel for a bio-based sustainable economy.

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Live diatoms as potential biocatalyst in a microbial fuel cell for harvesting continuous diafuel, carotenoids and bioelectricity

Cited by 31 publications

References 56 publications

Astaxanthin as a King of Ketocarotenoids: Structure, Synthesis, Accumulation, Bioavailability and Antioxidant Properties

Astaxanthin as a King of Ketocarotenoids: Structure, Synthesis, Accumulation, Bioavailability and Antioxidant Properties

Role of bacterial quorum sensing and quenching mechanism in the efficient operation of microbial electrochemical technologies: A state-of-the-art review

Microalgal-Based Bioenergy: Strategies, Prospects, and Sustainability

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