Enhanced fermentable sugar production in lignocellulosic biorefinery by exploring a novel corn stover and configuring high-solid pretreatment conditions

Zabed, Hossain M.; Akter, Sonia; Dar, Mudasir A.; Tuly, Jamila A.; Aswathi, Mukesh Kumar; Yun, Jimmy; Li, Jia; Qi, Xianghui

doi:10.1016/j.biortech.2023.129498

Cited by 10 publications

(3 citation statements)

References 44 publications

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“…Under these conditions, the highest glucose titer reached 11.46 g/L (Satimanont et al, 2012). However, it is important to note that the degradation of carbohydrates by acid pretreatment produces biological inhibitors such as organic acids, phenols and aromatic aldehydes (Klinke et al, 2004;Zabed et al, 2023). This can lead to loss of polysaccharides, resulting in high detoxification costs in performing downstream microbial single-cell protein production.…”

Section: Chemical Methodsmentioning

confidence: 99%

New strategy for the biosynthesis of alternative feed protein: Single‐cell protein production from straw‐based biomass

Zhang,

Chen,

Gao

2024

GCB Bioenergy

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With rapid growth of global population, meeting the increasing demand for food has become a significant challenge. This challenge is further compounded by limited arable land and the necessity to address the nutritional needs of both humans and animals. However, the utilization of straw biomass, which is readily available as an agricultural by‐product, presents a sustainable solution to this problem. Microbial fermentation has emerged as a highly effective method for converting non‐food biomass into protein, particularly known as single‐cell protein (SCP). Compared to traditional protein sources, SCP production through microbial fermentation is rapid and efficient, and requires minimal land resources. This review provides a comprehensive review of the research advancements in SCP from agricultural biomass, including pretreatment methods, microbial strains, and fermentation processes involved in the bioconversion of straw biomass. Due to the complexity of straw‐based biomass (SBB), it is essential to customize industrial strains and optimize the fermentation process to achieve the highest protein yield and productivity. Additionally, improving the compatibility between tailored processes and cost‐effective industrial strains can lead to the production of protein substitutes that are not only highly nutritious but also economically viable. Hence, the application of SCP derived from SBB presents a dual solution by reducing the need for managing agricultural residues and providing a sustainable source of protein. However, the production of SCP from SBB also has some limitations, such as protein‐synthesis efficiency, production cost, and difficulty to scale‐up the production process. In the future, there is great potential for significant advancements in the targeted conversion of SBB into protein by customizing high‐performance microbial strains. Several sensor and machine learning technologies will predict and monitor real‐time dynamic changes in the fermentation process of SBB, offering an opportunity to improve the production of sustainable SCP in an environmentally friendly and precise manner.

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Section: Chemical Methodsmentioning

confidence: 99%

New strategy for the biosynthesis of alternative feed protein: Single‐cell protein production from straw‐based biomass

Zhang,

Chen,

Gao

2024

GCB Bioenergy

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“…This improves the availability of fermentable substrates for microbial fermentation, such as sugars and cellulosic components. More easily accessed substrates provide more fermentable sugars that can be turned into biogas [65,66]. Optimizing SCW pretreatment aims to enhance hydrogen production through the dark fermentation process.…”

Section: Biogas and Hydrogen Production From Pretreated Grhmentioning

confidence: 99%

Optimization of Subcritical Water Pretreatment on Glutinous Rice Husk for Efficient Sugar and Hydrogen Production

Aziz,

Man,

Dau

et al. 2024

Preprint

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There are thousands of different rice cultivars available worldwide, and glutinous rice (Oryza sativa var. glutinosa), sometimes known as sticky rice, is one of the most well-known varieties. Glutinous Rice Husk (GRH) is categorized as lignocellulosic biomass obtained as a by-product of rice manufacturing. The GRH is residue with a substantial amount of cellulose, hemicelluloses, and lignin, but it is difficult to degrade GRH during anaerobic digestion or fermentation. This research aims to investigate the factors affecting the sugar production of GRH by subcritical water (SCW) pretreatment. It is expected that the sugar produced could increase biohydrogen production. The biohydrogen yield was compared between raw and SCW-treated GRH as a fermentation substrate. Response Surface Methodology (RSM) was utilized to determine the ideal parameters for the subcritical water pretreatment of GRH using a Central Composite Design in the Design Expert Software. SCW pretreatment with temperature (195°C), solid-to-liquid ratio (1:10), and reaction time (17.5 minutes) were selected for the optimum sugar production (647.2 mg/L total sugar) of GRH. This pretreatment improves hydrogen production during dark fermentation by increasing the availability of easily accessible simple sugars for microbes. Additionally, it improves the lignocellulosic structure of GRH to enhance the fermentation process. Dark fermentation with SCW-treated GRH (0.73 mL H2/g-TS) obtained higher hydrogen yield than raw GRH (0.09 mL H2/g-TS). These findings highlight the potential of SCW pretreatment as an effective strategy for maximizing hydrogen production from GRH and contributing to using lignocellulosic biomass for renewable energy applications.

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“…The annual production of LCB is 3-5 GT worldwide, which could supply about 50-85 EJ of energy per year, which accounts for 10-20% of the world's current energy demands [7]. Besides the bioenergy production from LCB, it results in the net saving of energy and reduced industrial CO 2 emissions while fixing CO 2 in the soil with perennial energy crops [8]. The bioconversion of lignocellulose into energy and commodity chemicals is more sensible; however, its hydrolysis into chemicals seems plausible and more efficient to make use of its mass and atoms [9].…”

Section: Introductionmentioning

confidence: 99%

Termite Microbial Symbiosis as a Model for Innovative Design of Lignocellulosic Future Biorefinery: Current Paradigms and Future Perspectives

Dar,

Xie,

Zabed

et al. 2024

Biomass

Self Cite

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The hunt for renewable and alternative fuels has driven research towards the biological conversion of lignocellulosic biomass (LCB) into biofuels, including bioethanol and biohydrogen. Among the natural biomass utilization systems (NBUS), termites represent a unique and easy-to-access model system to study host–microbe interactions towards lignocellulose bioconversion/valorization. Termites have gained significant interest due to their highly efficient lignocellulolytic systems. The wood-feeding termites apply a unique and stepwise process for the hydrolysis of lignin, hemicellulose, and cellulose via biocatalytic processes; therefore, mimicking their digestive metabolism and physiochemical gut environments might lay the foundation for an innovative design of nature-inspired biotechnology. This review highlights the gut system of termites, particularly the wood-feeding species, as a unique model for future biorefinery. The gut system of termites is a treasure-trove for prospecting novel microbial species, including protists, bacteria, and fungi, having higher biocatalytic efficiencies and biotechnological potentials. The significance of potential bacteria and fungi for harnessing the enzymes appropriate for lignocellulosic biorefinery is also discussed. Termite digestomes are rich sources of lignocellulases and related enzymes that could be utilized in various industrial processes and biomass-related applications. Consideration of the host and symbiont as a single functioning unit will be one of the most crucial strategies to expedite developments in termite-modeled biotechnology in the future.

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Enhanced fermentable sugar production in lignocellulosic biorefinery by exploring a novel corn stover and configuring high-solid pretreatment conditions

Cited by 10 publications

References 44 publications

New strategy for the biosynthesis of alternative feed protein: Single‐cell protein production from straw‐based biomass

New strategy for the biosynthesis of alternative feed protein: Single‐cell protein production from straw‐based biomass

Optimization of Subcritical Water Pretreatment on Glutinous Rice Husk for Efficient Sugar and Hydrogen Production

Termite Microbial Symbiosis as a Model for Innovative Design of Lignocellulosic Future Biorefinery: Current Paradigms and Future Perspectives

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