Beyond the farm: Making edible protein from CO2 via hybrid bioinorganic electrosynthesis

Xu, Mingyi; Zhou, Huihui; Zou, Rusen; Yang, Xiaoyang; Su, Yanyan; Angelidaki, Irini; Zhang, Yifeng

doi:10.1016/j.oneear.2021.05.007

Cited by 15 publications

(9 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If the nearly untapped global biogas potential was leveraged in its entirety, it could substitute the equivalent of 26%–37% of the current natural gas production ( Jain, 2019 ). Biogas has been proven as a feedstock for methane SCP production ( Jones et al, 2020 ; Xu et al, 2021a ), as well as electrochemically upgraded biogases ( Acosta et al, 2020 ), and artificially synthesized methane from CO 2 ( Xu et al, 2021b ).…”

Section: Methodsmentioning

confidence: 99%

Methane Single Cell Protein: Potential to Secure a Global Protein Supply Against Catastrophic Food Shocks

Martínez¹,

Pearce

Throup³

et al. 2022

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

Global catastrophes such as a supervolcanic eruption, asteroid impact, or nuclear winter could cause global agricultural collapse due to reduced sunlight reaching the Earth’s surface. The human civilization’s food production system is unprepared to respond to such events, but methane single cell protein (SCP) could be a key part of the solution. Current preparedness centers around food stockpiling, an excessively expensive solution given that an abrupt sunlight reduction scenario (ASRS) could hamper conventional agriculture for 5–10 years. Instead, it is more cost-effective to consider resilient food production techniques requiring little to no sunlight. This study analyses the potential of SCP produced from methane (natural gas and biogas) as a resilient food source for global catastrophic food shocks from ASRS. The following are quantified: global production potential of methane SCP, capital costs, material and energy requirements, ramp-up rates, and retail prices. In addition, potential bottlenecks for fast deployment are considered. While providing a more valuable, protein-rich product than its alternatives, the production capacity could be slower to ramp up. Based on 24/7 construction of facilities, 7%–11% of the global protein requirements could be fulfilled at the end of the first year. Despite significant remaining uncertainties, methane SCP shows significant potential to prevent global protein starvation during an ASRS at an affordable price—US$3–5/kg dry.

show abstract

Section: Methodsmentioning

confidence: 99%

Methane Single Cell Protein: Potential to Secure a Global Protein Supply Against Catastrophic Food Shocks

Martínez¹,

Pearce

Throup³

et al. 2022

Front. Bioeng. Biotechnol.

View full text Add to dashboard Cite

show abstract

“…In this study, acetate was also suggested to be incorporated into the biomass of crop plants through major metabolic pathways . Microbial electrochemical reactors have been used for the selective production of methane from CO 2 , while microbial protein has been produced in a second stage with the cultivation of Methylocapsa acidiphila (Figure b) . Note that biogas pretreatment can be required before it is used for the culture of methane-oxidizing bacteria (MOB) and hydrogen-oxidizing bacteria (HOB).…”

Section: Electricity-driven Synchronous Metabolism Of Carbon and Nitr...mentioning

confidence: 99%

“…147 In addition, biomass amino acid profiles can be compared when using different carbon and nitrogen sources for microbial protein production. 3 5.2. Microbial Characterization.…”

Section: Characterization Toolsmentioning

confidence: 99%

“…Rapid processes of industrialization and urbanization have caused tremendous climate change, accompanied by waste overload and resource scarcity . It is expected that 68% of the world’s population will live in urban areas by 2050, further aggravating the global challenge of resource shortage . Meanwhile, exacerbating global greenhouse gas (GHG) emissions requires a switch from fossil fuels to renewable energy with the application of carbon-neutral or even carbon-negative technologies. , …”

Section: Introductionmentioning

confidence: 99%

“…1 It is expected that 68% of the world's population will live in urban areas by 2050, 2 further aggravating the global challenge of resource shortage. 3 Meanwhile, exacerbating global greenhouse gas (GHG) emissions requires a switch from fossil fuels to renewable energy with the application of carbon-neutral or even carbonnegative technologies. 4,5 To address the issue of waste overload, environmental science and technology will continue playing a critical role, with the discovery of novel microbes, 6 design of metabolism pathways, 7 development of environmentally functional materials, 8 and investigation of cascade reactions in an assembled hybrid process.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electricity-Driven Microbial Metabolism of Carbon and Nitrogen: A Waste-to-Resource Solution

Chu

Jiang

Liang

et al. 2023

Environ. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

Electricity-driven microbial metabolism relies on the extracellular electron transfer (EET) process between microbes and electrodes and provides promise for resource recovery from wastewater and industrial discharges. Over the past decades, tremendous efforts have been dedicated to designing electrocatalysts and microbes, as well as hybrid systems to push this approach toward industrial adoption. This paper summarizes these advances in order to facilitate a better understanding of electricity-driven microbial metabolism as a sustainable waste-to-resource solution. Quantitative comparisons of microbial electrosynthesis and abiotic electrosynthesis are made, and the strategy of electrocatalyst-assisted microbial electrosynthesis is critically discussed. Nitrogen recovery processes including microbial electrochemical N 2 fixation, electrocatalytic N 2 reduction, dissimilatory nitrate reduction to ammonium (DNRA), and abiotic electrochemical nitrate reduction to ammonia (Abio-NRA) are systematically reviewed. Furthermore, the synchronous metabolism of carbon and nitrogen using hybrid inorganic-biological systems is discussed, including advanced physicochemical, microbial, and electrochemical characterizations involved in this field. Finally, perspectives for future trends are presented. The paper provides valuable insights on the potential contribution of electricity-driven microbial valorization of waste carbon and nitrogen toward a green and sustainable society.

show abstract

Comprehensive insights into sustainable conversion of agricultural and food waste into microbial protein for animal feed production

Rasool

Hussain

Shahzad

et al. 2023

Rev Environ Sci Biotechnol

View full text Add to dashboard Cite

The growing global population and higher living standards instantly demand the transition in the direction of a sustainable food system. A substantial section of means and agricultural lands are presently committed to protein-rich feed production to rear livestock for human consumption. Conversely, accelerated farming activities and the food industry have rendered a drastic increase in waste which impair the economic and environmental sustainability of the ecosystem. This situation emerges the need for developing an integrated technology for waste management and to improve sustainability footprints. Microbial protein (MP) production based on renewable electron and carbon sources has the potential as a substitute protein source. MP production for animal feed use is growing fast and is derived from bacteria, algae, and fungi including yeast. MP produced from all types of microbes is currently commercialized and in use. However, novel methods and processes are also under investigation to make MP production more economical and sustainable. Current research on MP has concentrated on the valorization of waste materials by using high protein content-containing microorganisms, which can then be used in animal feed. Using such kind of integrated approach, the agroindustry waste resources upcycling can contribute towards finding sustainable, cheaper, and environment-friendly protein sources. This review first describes the potential waste feedstock for MP production and summarizes the recent progress in the application of MP-producing microorganisms including fungus, yeast, bacteria, and phototrophic microbes. Bioprocesses, and production technology advances for MP production have been explored and discussed in detail. Finally, the MP application as animal feed, its challenges, and future perspectives in research have been evaluated.

show abstract

Beyond the farm: Making edible protein from CO2 via hybrid bioinorganic electrosynthesis

Cited by 15 publications

References 63 publications

Methane Single Cell Protein: Potential to Secure a Global Protein Supply Against Catastrophic Food Shocks

Methane Single Cell Protein: Potential to Secure a Global Protein Supply Against Catastrophic Food Shocks

Electricity-Driven Microbial Metabolism of Carbon and Nitrogen: A Waste-to-Resource Solution

Comprehensive insights into sustainable conversion of agricultural and food waste into microbial protein for animal feed production

Contact Info

Product

Resources

About