Spatially-explicit projection of future microbial protein from lignocellulosic waste

Chen, Liwei; Upcraft, Thomas; Piercy, Ellen; Guo, Miao

doi:10.1016/j.crbiot.2022.10.008

Cited by 5 publications

(12 citation statements)

References 35 publications

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“…Yet, apart from their adaptation potential, the deployment of "waste-to-food", "waste-to-proteins" or "waste-to-nutrition" pathways is also increasingly promoted as a solution to mitigate global environmental impacts (Javourez et al, 2021;Piercy et al, 2022;Smetana et al, 2022). This is because current food system plays a predominant role in global planetary boundaries overshooting (Gerten et al, 2020), triggering the need to decrease the impacts of livestock production, by downsizing the share of animal-based food in global diets as well as reducing the impacts of feed production (Poore and Nemecek, 2018;Wilfart et al, 2019).…”

Section: Background and Contextmentioning

confidence: 99%

“…Building on these observations, projects aiming to transform residual biomass streams into food and feed propose to decouple food production (majorly livestock production) from arable land (Alexander et al, 2017;Pikaar et al, 2018;Tallentire et al, 2018) and shorten nutrients cycles (Smetana et al, 2022). These approaches, mostly formulated as supply-side mitigation measures, capitalize on the wide availability of unused or underused unavoidable residual streams (Chen et al, 2022;Piercy et al, 2022), and the development and scaling of food biotechnology innovations (Herrero et al, 2020;Pikaar et al, 2023). The foundation lies in the large residual biomass resource potential, enough to unlock massive land-free food production through these novel food and feed pathways.…”

Section: Background and Contextmentioning

confidence: 99%

“…So far, existing environmental assessments have mostly been performed by the project promoters themselves, through a process eco-design approach, hence implementing heterogeneous assessment methodologies preventing cross-comparison. The few reported assessments attempting to compare several waste-to-nutrition pathways either (i) overlooked the constrained aspect of residual biomass (these already provide services to society), (ii) built on precalculated results from other studies with unharmonized assumptions (for example, regarding the deployment context and technological performances), (iii) arbitrarily chose which pathways to assess without any plausibility nor risk considerations and (iv) rarely followed a life cycle assessment (LCA) methodology (Alexander et al, 2017;Humpenöder et al, 2022;Piercy et al, 2022;Pikaar et al, 2018). Thus, a pathway selection rationale, a uni ed scaling strategy, and a harmonized life cycle inventories (LCI) modeling approach are missing to enable robust, fair and comprehensive comparison of emerging waste-to-nutrition pathways between them and against alternative bioresource management options.…”

Section: Knowledge Gaps and Problem Statementmentioning

confidence: 99%

See 2 more Smart Citations

Waste reintroduced in the kitchen: life cycles inventories of representative waste-to-nutrition pathways

Javourez,

Tituta-Barna,

Hamelin

2024

Preprint

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Waste recovery technologies targeting the formulation of edible ingredients such as insects, microorganisms, or proteins extracts, are increasingly promoted to mitigate global environmental impacts. Yet, many conversion pathways exist, and little is known about the plausibility, the implications, and the environmental relevance of deploying them: a comparative modeling approach is missing. To this end, we reviewed the available data and literature documenting these emerging biorefineries and compiled it into six harmonized life cycle inventory (LCI) models estimating the forecasted performances of 16 representative “waste-to-nutrition” pathways in function of 18 input stream characteristics and 293 technological parameters. Illustrated on eleven case studies, the results quantify the untapped potential of transforming waste into novel food and feed and unravel the intrinsic trade-offs between their energy intensity, their yield and the biochemical composition of input streams. We show that several scenarios are possible to achieve France’s protein feed autonomy by scaling and combining different waste-to-nutrition pathways, but that each scenario would lead to different consequences on energy systems and on bioresources’ mobilization requirements. As provided, the LCI models capture the implications associated with these waste recovery technologies and are ready to support their prospective life cycle assessment.

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Section: Background and Contextmentioning

confidence: 99%

Section: Background and Contextmentioning

confidence: 99%

Section: Knowledge Gaps and Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Waste reintroduced in the kitchen: life cycles inventories of representative waste-to-nutrition pathways

Javourez,

Tituta-Barna,

Hamelin

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Covering the entire ‘waste‐to‐nutrition’ value chain, microbial protein production could yield in the range of 20–200 kg proteins per ton of dry wood, straw or manure (to mention a few), depending on the specific conversion routes (Javourez et al., 2023). Such processes have the potential to unlock waste and lignocellulosic bioresources to enter the food chain and open the perspectives of massive land‐free protein supplies, given the availability of corresponding waste and residues (Chen et al., 2022). For example, France's residual biomass resource is estimated to host as much proteins as its current vegetable protein production and host as much sugars (majorly cellulosic in terms of calories) as a fourth of France's final energy consumption (Javourez et al., 2023).…”

Section: Unmatched Resource Use Efficiencies Of Microbial Biotechmentioning

confidence: 99%

Ruminations on sustainable and safe food: Championing for open symbiotic cultures ensuring resource efficiency, eco‐sustainability and affordability

Javourez,

Matassa,

Vlaeminck

et al. 2024

Microbial Biotechnology

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Microbes are powerful upgraders, able to convert simple substrates to nutritional metabolites at rates and yields surpassing those of higher organisms by a factor of 2 to 10. A summary table highlights the superior efficiencies of a whole array of microbes compared to conventionally farmed animals and insects, converting nitrogen and organics to food and feed. Aiming at the most resource‐efficient class of microbial proteins, deploying the power of open microbial communities, coined here as ‘symbiotic microbiomes’ is promising. For instance, a production train of interest is to develop rumen‐inspired technologies to upgrade fibre‐rich substrates, increasingly available as residues from emerging bioeconomy initiatives. Such advancements offer promising perspectives, as currently only 5%–25% of the available cellulose is recovered by ruminant livestock systems. While safely producing food and feed with open cultures has a long‐standing tradition, novel symbiotic fermentation routes are currently facing much higher market entrance barriers compared to axenic fermentation. Our global society is at a pivotal juncture, requiring a shift towards food production systems that not only embrace the environmental and economic sustainability but also uphold ethical standards. In this context, we propose to re‐examine the place of spontaneous or natural microbial consortia for safe future food and feed biotech developments, and advocate for intelligent regulatory practices. We stress that reconsidering symbiotic microbiomes is key to achieve sustainable development goals and defend the need for microbial biotechnology literacy education.

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Section: Introduction 1background / Contextmentioning

confidence: 99%

Waste reintroduced in the kitchen: life cycles inventories of representative waste-to-nutrition pathways

Javourez,

Tituta-Barna,

Hamelin

2023

Preprint

View full text Add to dashboard Cite

Waste recovery technologies targeting the formulation of edible ingredients such as insects, microorganisms, or proteins extracts, are increasingly promoted to mitigate global environmental impacts. Yet, many conversion pathways exist, and little is known about the plausibility, the implications, and the environmental relevance of deploying them: a comparative framework is missing. To this end, we reviewed the available data and literature documenting these emerging biorefineries and compiled it into six harmonized life cycle inventory (LCI) models estimating the forecasted performances of 16 representative “waste-to-nutrition” pathways in function of 18 input stream characteristics and 293 process parameters. Illustrated on eleven case studies, the results quantify the untapped potential of transforming waste into novel food and feed, but also precisely document why these are no free lunches by unravelling the intrinsic trade-offs between their energy intensity, their yield and the initial composition-structure of input streams. We show that several scenarios are possible to achieve France’s protein feed autonomy by scaling and combining different waste-to-nutrition pathways, but that each scenario would lead to different implications for the energy system and in terms of biomass mobilization. As provided, the LCI models capture the implications associated with these waste recovery technologies and are ready to support their prospective life cycle assessment.

show abstract

Spatially-explicit projection of future microbial protein from lignocellulosic waste

Cited by 5 publications

References 35 publications

Waste reintroduced in the kitchen: life cycles inventories of representative waste-to-nutrition pathways

Waste reintroduced in the kitchen: life cycles inventories of representative waste-to-nutrition pathways

Ruminations on sustainable and safe food: Championing for open symbiotic cultures ensuring resource efficiency, eco‐sustainability and affordability

Waste reintroduced in the kitchen: life cycles inventories of representative waste-to-nutrition pathways

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