Journal ArticleDOI
Valorization of industrial waste and by-product streams via fermentation for the production of chemicals and biopolymers
Apostolis A. Koutinas,Anestis Vlysidis,Daniel Pleissner,Nikolaos Kopsahelis,Isabel Lopez Garcia,Ioannis K. Kookos,Seraphim Papanikolaou,Tsz Him Kwan,Carol Sze Ki Lin +8 more
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TLDR
It is evident that fermentative production of chemicals and biopolymers via refining of waste and by-product streams is a highly important research area with significant prospects for industrial applications.Abstract:
The transition from a fossil fuel-based economy to a bio-based economy necessitates the exploitation of synergies, scientific innovations and breakthroughs, and step changes in the infrastructure of chemical industry. Sustainable production of chemicals and biopolymers should be dependent entirely on renewable carbon. White biotechnology could provide the necessary tools for the evolution of microbial bioconversion into a key unit operation in future biorefineries. Waste and by-product streams from existing industrial sectors (e.g., food industry, pulp and paper industry, biodiesel and bioethanol production) could be used as renewable resources for both biorefinery development and production of nutrient-complete fermentation feedstocks. This review focuses on the potential of utilizing waste and by-product streams from current industrial activities for the production of chemicals and biopolymers via microbial bioconversion. The first part of this review presents the current status and prospects on fermentative production of important platform chemicals (i.e., selected C2-C6 metabolic products and single cell oil) and biopolymers (i.e., polyhydroxyalkanoates and bacterial cellulose). In the second part, the qualitative and quantitative characteristics of waste and by-product streams from existing industrial sectors are presented. In the third part, the techno-economic aspects of bioconversion processes are critically reviewed. Four case studies showing the potential of case-specific waste and by-product streams for the production of succinic acid and polyhydroxyalkanoates are presented. It is evident that fermentative production of chemicals and biopolymers via refining of waste and by-product streams is a highly important research area with significant prospects for industrial applications.read more
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Mystery behind Chinese liquor fermentation
Guangyuan Jin,Yang Zhu,Yan Xu +2 more
TL;DR: Wang et al. as mentioned in this paper provided a detailed, systematic and critical review on Chinese liquor to improve the current industrial practice and serve the modern society with yet incompletely explored but useful principles.
Journal ArticleDOI
Production of bioplastic through food waste valorization.
Yiu Fai Tsang,Vanish Kumar,Pallabi Samadar,Yi Yang,Jechan Lee,Yong Sik Ok,Hocheol Song,Kihyun Kim,Eilhann E. Kwon,Young Jae Jeon +9 more
TL;DR: This review focuses on current technologies for the production of polyhydroxyalkanoates (PHA) from food waste, with particular attention paid to fermentation technologies based on pure and mixed cultures.
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Producing PHAs in the bioeconomy — Towards a sustainable bioplastic
TL;DR: In this paper, the authors have shown that polyhydroxyalkanoates (PHAs) can contribute to greenhouse gas emission reduction targets, waste reduction as well as green jobs and innovation in the biotechnology sector.
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Bioremediation 3.0: Engineering pollutant-removing bacteria in the times of systemic biology.
TL;DR: In this paper, the authors analyze how contemporary systemic biology is helping to take the design of bioremediation agents back to the core of environmental biotechnology and propose an engineering workflow.
Journal ArticleDOI
Bioconversion of biomass waste into high value chemicals.
TL;DR: The valorization of inexpensive, abundantly available, and renewable biomass waste could provide significant benefits in response to increasing fossil fuel demands and manufacturing costs, as well as emerging environmental concerns.
References
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Improving ethanol and xylitol fermentation at elevated temperature through substitution of xylose reductase in Kluyveromyces marxianus
TL;DR: In this study, the native xylose reductase gene of the K. marxianus strain was substituted with XR or its mutant genes from Pichia stipitis and the ability of the resultant recombinant strains to assimilatexylose to produce xylitol and ethanol at elevated temperature was greatly improved.
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Production of bacterial cellulose by Gluconacetobacter sp. RKY5 isolated from persimmon vinegar
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Process design and optimization of novel wheat-based continuous bioethanol production system.
TL;DR: A novel design of a wheat‐based biorefinery for bioethanol production, including wheat milling, gluten extraction as byproduct, fungus submerged fermentation for enzyme production, starch hydrolysis, fungal biomass autolysis for nutrient regeneration, yeast fermentation with recycling integrated with a pervaporation membrane for ethanol concentration, and fuel‐grade ethanol purification by pressure swing distillation (PSD), was optimized in continuous mode using the equation‐based software GAMS.
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Adaptive evolution of nontransgenic Escherichia coli KC01 for improved ethanol tolerance and homoethanol fermentation from xylose
TL;DR: The results demonstrate that an industry-oriented nontransgenic E. coli strain could be developed through incremental improvements of desired traits by a combination of molecular biology and traditional microbiology techniques.
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Improvement of ethanol fermentation from lignocellulosic hydrolysates by the removal of inhibitors
TL;DR: In this paper, the removal efficiency of fermentation inhibitors in a lignocellulosic hydrolysate by electrodialysis and the ethanol performance of ED-treated hydrolysates were investigated.