Sugars Yield Obtained after Acid and Enzymatic Hydrolysis of Fast-growing Poplar Wood Species

Antczak, A.; Marchwicka, Monika; Szadkowski, Jan; Drożdżek, Michał; Gawron, Jakub; Radomski, Andrzej; Zawadzki, J.

doi:10.15376/biores.13.4.8629-8645

Cited by 13 publications

(11 citation statements)

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“…Whatman no.1 filter paper was used to measure the enzyme activity by the NREL method (Adney and Baker 1996). The enzymatic hydrolysis was done according to the procedure described by Antczak et al (2018a). The cellulose concentration was 1% w/w.…”

Section: Enzymatic Hydrolysis and Hplc Sugars Analysismentioning

confidence: 99%

“…Another important aspect in bioethanol production technology is the chemical composition of biomass. In this case, the young fast-growing wood (2.5-year-old to 5-year-old) of Populus trichocarpa has favorable chemical composition, because it is made of high cellulose content (52.0-53.0%), low lignin (19.1-20.1%) and extractives (1.2-1.7%) content (Antczak et al 2018a(Antczak et al , 2019. Additionally, the young wood of P. trichocarpa is a rich source of simple sugars (glucose and xylose), which can be produced in acid or enzymatic hydrolysis reactions and turned into bioethanol through fermentation.…”

Section: Introductionmentioning

confidence: 99%

“…The LHW method is the second process which has often been used for the pretreatment of various lignocellulosic raw materials (Wyman et al 2005;Ragauskas et al 2006;Hu and Ragauskas 2012;Li et al 2014Li et al , 2017Michelin and Teixeira 2016;Antczak et al 2018a;Imman et al 2018). The pretreatment is generally conducted at elevated temperatures (160-240 °C) for a few minutes to an hour, under pressure, without addition of chemicals other than water.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the effectiveness of liquid hot water and steam explosion pretreatments of fast-growing poplar (Populus trichocarpa) wood

et al. 2021

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In this paper, the influence of physicochemical pretreatment methods on the chemical composition, enzymatic hydrolysis efficiency and porosity of fast-growing Populus trichocarpa wood was compared. Among the pretreatment methods, the liquid hot water (LHW) and steam explosion (SE) were used, which were performed at three different temperatures (160 °C, 175 °C and 190 °C) and two residence times (15 min and 1 h). The chemical composition, enzymatic hydrolysis and porosity analysis were done for native wood and solid fraction obtained after LHW and SE pretreatments. The porosity analysis was performed by inverse size exclusion chromatography method. Additionally, inhibitors of hydrolysis and fermentation processes in the liquid and solid fractions obtained after pretreatments were examined. Based on the results, it was found that the tested pretreatments caused the greatest changes in the chemical content of hemicelluloses. It was found that after LHW and SE pretreatments up to 99.1% or 94.0%, respectively, of hemicelluloses were removed from the obtained solid fraction. Moreover, the LHW and SE processes greatly enhanced the enzymatic digestibility of fast-growing poplar wood. The highest glucose yield was achieved after 15 min of SE pretreatment at 190 °C and was 676.4 mg/g pretreated biomass, while in the case of xylose the highest value (119.3 mg/g pretreated biomass) was obtained after 15 min of LHW pretreatment at 160 °C. Generally, after SE pretreatment process, more inhibitors were formed, and a greater effect of porous structure development was noticed than after LHW pretreatment. Despite this difference, the average glucose contents and yields after enzymatic hydrolysis of pretreated biomass were generally similar regardless of the pretreatment used.

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Section: Enzymatic Hydrolysis and Hplc Sugars Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Assessment of the effectiveness of liquid hot water and steam explosion pretreatments of fast-growing poplar (Populus trichocarpa) wood

et al. 2021

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“…The Cellic CTec2 enzyme with the activity of 151 FPU/mL measured with Whatman No.1 filter paper according to the National Renewable Energy Laboratory (NREL) method was used (Adney and Baker 1996). The hydrolysis process and high-performance liquid chromatography (HPLC) analysis of glucose and xylose content in the hydrolysates were performed according to the procedures described by Antczak et al (2018) and Akus-Szylberg et al (2020a).…”

Section: Enzymatic Hydrolysismentioning

confidence: 99%

Effects of soaking aqueous ammonia pretreatment on selected properties and enzymatic hydrolysis of poplar (Populus trichocarpa) wood

Akus-Szylberg

Antczak

Zawadzki

2021

BioRes

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Effects of soaking aqueous ammonia pretreatment were considered for fast-growing poplar wood in the context of bioethanol production. The milled Populus trichocarpa wood with a particle size of 0.43 to 1.02 mm was pretreated at two temperatures (50 °C and 90 °C) and two concentrations of ammonia solution (15% and 20% w/w) for 20 h. The lignin content decreased by 46% in the biomass treated with the most severe conditions. After enzymatic hydrolysis, the sugar yield was analysed, and the results indicated that increased temperature and ammonia concentration during pretreatment resulted in higher glucose content. Additionally, changes in the degree of polymerization and available pore volume were investigated.

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“…The glucose yield (mg glucose / g biomass) that can be obtained from low quality wood biomass may vary for different tree species. To determine how much biomass is needed to obtain 1 kilogram of SCO or DHA, the results of the Antczak et al (2018) experiment are used, respectively, in the calculations of this work it is assumed that it is possible to obtain 602 mg of glucose from one g of wood biomass [48]. In the context of SCO and polyunsaturated fatty acids production, in Latvia, preference should be given to used dairy wastewater or whey (stable first place with a value of closeness to ideal solution of 0.57).…”

Section: Multi-criteria Analysismentioning

confidence: 99%

Ranking of By-products for Single Cell Oil Production. Case of Latvia

Račko

Blumberga

Spalviņš

et al. 2020

Environmental and Climate Technologies

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Single cell oil is considered as a promising alternative to fish and vegetable oils. Due to the ability of oleaginous microorganisms to produce significant amounts of polyunsaturated fatty acids such as docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), single cell oil can be used for human and animal consumption. In this context, marine microorganisms of the class Labyrinthulomycetes are particularly highlighted in scientific literature. In order to clarify the possibilities for the use of microorganisms of the class Labyrinthulomycetes in large-scale single cell oil production, the first step is to gain awareness of the cultivation conditions required for these microorganisms. In addition, to reduce the cost of single cell oil production, it is necessary to identify potential agroindustrial waste products that are suitable for microbiological cultivation of Labyrinthulomycetes. This article examines the potential biotechnological applications of Labyrinthulomycetes in single cell oil production, the cultivation conditions, nutritional requirements, inhibitors and suitable waste products. In addition, an agroindustrial by-product availability analysis has been carried out. The article evaluates agroindustrial by-products based on their availability in Latvia, required pre-treatment, price, shelf life and efficiency.

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Sugars Yield Obtained after Acid and Enzymatic Hydrolysis of Fast-growing Poplar Wood Species

Cited by 13 publications

References 0 publications

Assessment of the effectiveness of liquid hot water and steam explosion pretreatments of fast-growing poplar (Populus trichocarpa) wood

Assessment of the effectiveness of liquid hot water and steam explosion pretreatments of fast-growing poplar (Populus trichocarpa) wood

Effects of soaking aqueous ammonia pretreatment on selected properties and enzymatic hydrolysis of poplar (Populus trichocarpa) wood

Ranking of By-products for Single Cell Oil Production. Case of Latvia

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