Effects of soaking aqueous ammonia pretreatment on chemical composition and enzymatic hydrolysis of corn stover

Akus-Szylberg, Florentyna; Antczak, A.; Zawadzki, J.

doi:10.5604/01.3001.0015.3633

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…Alkaline conditions are usually provided by chemicals such as lime, sulfite, ammonia, and sodium hydroxide. The most frequently used alkaline chemical is sodium hydroxide, which effectively degrades lignocellulosic materials to produce fermentable sugars (Akus‐Szylberg et al., 2021; Shao et al., 2020). However, similar to other pretreatment methods, the production of biological inhibitors and high costs of post‐treatment must be considered in the large‐scale application of alkali pretreatment.…”

Section: Pretreatment Of Straw Resourcesmentioning

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: Pretreatment Of Straw Resourcesmentioning

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

View full text Add to dashboard Cite

show abstract

“…For the transformation towards a sustainable energy supply and an ecological economy, renewable and biogenic resources and waste streams have to be utilized [1]. For this reason, research on innovative utilization and alternative upgrading approaches or pre-treatments such as steam explosion [2] or chemical methods [3] is essential. Therefore, biogenic (waste) materials such as the organic fraction of municipal solid waste [4], sewage sludge, forest-based residues (FR) and digestate (DG) become attractive [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Treatment of Residual Forest Wood (Softwood) and Digestate from Anaerobic Digestion—Influence of Temperature and Holding Time on the Characteristics of the Solid and Liquid Products

et al. 2022

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Hydrothermal treatment (HTT) offers the potential to upgrade low-value biomass such as digestate (DG) or forest residue (FR) by producing solids and liquids for material use or energetic utilization. In this study, microwave-assisted HTT experiments with DG and FR as feedstocks were executed at different temperatures (130, 150, 170 °C) and with different holding times (30, 60, 90 min) to determine the influences on product properties (ash and elemental concentrations, calorific values and chemical compounds). In general, DG and FR reacted differently to HTT. For the DG solids, for instance, the ash concentration was reduced to 8.68%DM at 130 °C (initially 27.67%DM), and the higher heating value increased from 16.55 MJ/kgDM to 20.82 MJ/kgDM at 170 °C, while the FR solids were affected only marginally. Elements with importance for emissions in combustion were leached out in both HTT solids. The DG and FR liquids contained different chemical compounds, and the temperature or holding time affected their formation. Depending on the designated application of HTT, less severe conditions can deliver better results. It was demonstrated that different low-temperature HTT conditions already induce strong changes in the product qualities of DG and FR. Optimized interactions between process parameters (temperature, holding time and feedstock) might lead to better cost–benefit effects in HTT.

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Influence of Pine and Alder Woodchips Storage Method on the Chemical Composition and Sugar Yield in Liquid Biofuel Production

et al. 2022

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The aim of this study was to investigate the effect of storing methods of woodchips from two species, pine (Pinus sylvestris L.) and alder (Alnus Mill.), on the basic chemical composition and sugar yield in liquid biofuel production. Two methods of storing woody biomass were used in the study—an open pile and a cover pile. The wood was felled at the end of November and was stored as industrial chips for eight months from December onward. After this time, material was collected for chemical composition analyses and enzymatic hydrolysis. The results of the chemical composition analysis of the wood for both studied species showed the influence of the type of storage on the composition of the individual structural components of the wood. Based on the results of the enzymatic hydrolysis of the woody biomass, it can be seen that, irrespective of the hydrolysed material (wood, cellulose, holocellulose), the material from the biomass stored in the open pile gave higher results. The hydrolysis efficiency also increased with time, independent of the type of material that was hydrolysed. The highest sugar yield from the enzymatic hydrolysis of wood was obtained for alder wood stored in an open pile. The highest sugar yield from the enzymatic hydrolysis of cellulose was obtained for cellulose extracted from alder wood—as well—that had been stored in an open pile.

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Effects of soaking aqueous ammonia pretreatment on chemical composition and enzymatic hydrolysis of corn stover

Cited by 4 publications

References 16 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

Hydrothermal Treatment of Residual Forest Wood (Softwood) and Digestate from Anaerobic Digestion—Influence of Temperature and Holding Time on the Characteristics of the Solid and Liquid Products

Influence of Pine and Alder Woodchips Storage Method on the Chemical Composition and Sugar Yield in Liquid Biofuel Production

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