A Weibull statistics‐based lignocellulose saccharification model and a built‐in parameter accurately predict lignocellulose hydrolysis performance

Wang, Mingyu; Li, Shasha; Zhao, Xuebing; Yang, Jinghua; Loh, Soh Kheang; Sun, Xiaofang; Zhang, Chenxi; Xu, Fang

doi:10.1002/biot.201400723

Cited by 9 publications

(6 citation statements)

References 30 publications

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“…In contrast, second generation biomass is lignocellulosic biomass, including residues of forestry and crop production as well as whole plant biomass. Lignocellulosic biomass has recently received great attention as feedstocks for biorefinery due to their availability, high carbohydrate content, and most importantly the avoidance of the conflict with food production [1, 2].…”

Section: Introductionmentioning

confidence: 99%

Phenolic compounds: Strong inhibitors derived from lignocellulosic hydrolysate for 2,3‐butanediol production by Enterobacter aerogenes

Lee

Yang

et al. 2015

Biotechnology Journal

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Lignocellulosic biomass are attractive feedstocks for 2,3-butanediol production due to their abundant supply and low price. During the hydrolysis of lignocellulosic biomass, various byproducts are formed and their effects on 2,3-butanediol production were not sufficiently studied compared to ethanol production. Therefore, the effects of compounds derived from lignocellulosic biomass (weak acids, furan derivatives and phenolics) on the cell growth, the 2,3-butanediol production and the enzymes activity involved in 2,3-butanediol production were evaluated using Enterobacter aerogenes ATCC 29007. The phenolic compounds showed the most toxic effects on cell growth, 2,3-butanediol production and enzyme activity, followed by furan derivatives and weak acids. The significant effects were not observed in the presence of acetic acid and formic acid. Also, feasibility of 2,3-butanediol production from lignocellulosic biomass was evaluated using Miscanthus as a feedstock. In the fermentation of Miscanthus hydrolysate, 11.00 g/L of 2,3-butanediol was obtained from 34.62 g/L of reducing sugar. However, 2,3-butanediol was not produced when the concentration of total phenolic compounds in the hydrolysate increased to more than 1.5 g/L. The present study provides useful information to develop strategies for biological production of 2,3-butanediol and to establish biorefinery for biochemicals from lignocellulosic biomass.

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Section: Introductionmentioning

confidence: 99%

Phenolic compounds: Strong inhibitors derived from lignocellulosic hydrolysate for 2,3‐butanediol production by Enterobacter aerogenes

Lee

Yang

et al. 2015

Biotechnology Journal

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“…These samples were further hydrolyzed with enzymes after cooling to room temperature without pH adjustment. The cellulase preparation was produced by fermenting P. oxalicum JUA10–1 and T. reesei TX according to our previous method. , G. oxidans DSM 2003 was maintained according to a previous report . The commercial pectinase solutions were kindly supplied by Qingdao Vland Biotech (Qingdao, Shandong, China).…”

Section: Methodsmentioning

confidence: 99%

Gluconic Acid Production from Potato Waste by Gluconobacter oxidans Using Sequential Hydrolysis and Fermentation

Jiang

Liu

Zhang

et al. 2017

ACS Sustainable Chem. Eng.

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Potato pulp, which is the industrial residue of potato processing for starch production, can be used for biochemicals production. In this study, a green, sustainable, highly productive technology for producing gluconic acid from potato pulp was developed. The cocktails of cellulases from Trichoderma reesei TX and Penicillum oxalicum JUA10−1 with commercial pectinase were prepared and used to hydrolyze hydrothermally treated potato pulp into fermentable sugars at a solids content of 25% (w/v). Eighty percent of the glucan in the potato pulp was able to be converted into glucose when 8 FPU/g of dry material (DM) of cellulase and 1000 PGU/g DM of pectinase were added. The enzymatic hydrolysates of the potato pulp were fermented into 81.4 g/L gluconic acid by Gluconobacter oxidans DSM 2003 for 20 h at 30 °C. The overall conversion yield from glucose to gluconic acid was 94.9%, and the productivity was 4.07 g/L/h, which was significantly better than that of previous studies. Finally, 546.48 g of gluconic acid was produced from per kilogram of dried potato pulp with this process.

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“…SPRs and high sugar tolerant instant dry yeast were provided by Shandong Bio Sunkeen Co., Ltd, Jining, Shandong, China. The cellulase solutions were produced by P. oxalicum JUA10-1, T. reesei T1, T. reesei TX and Aspergillus niger , which are laboratory-maintained filamentous fungi [ 6 ]. T. reesei TX was obtained as follows: the xylanase III gene (Genbank accession number: BAA89465.2) was replaced by β-glucosidase 1 ( bgl 1, Genbank accession number: KJ739789.1) derived from A .…”

Section: Methodsmentioning

confidence: 99%

“…For composition analysis of SPRs, glucose, xylose and galactose were produced according to the National Renewable Energy Laboratory protocols [ 54 ]. The content of glucose was determined as described elsewhere [ 6 ]. The contents of xylose and galactose were determined using a Dionex ICS 2500 system (Thermo Scientific, Waltham, MA, USA) with a CarboPac™ PA1 analytical column (2 × 250 mm).…”

Section: Methodsmentioning

confidence: 99%

“…The use of renewable and carbon neutral bioethanol is considered an effective strategy to counter the greenhouse effect [ 4 ]. The chemical intermediates that accompany bioethanol production can be produced by biorefineries [ 5 ], and bioethanol is compatible with the current supply of liquid fuels [ 6 ]. Therefore, bioethanol is one of the most promising alternatives to fossil fuels that can ensure energy security and address environmental pollution problems [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

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An environmentally friendly and productive process for bioethanol production from potato waste

Wang

Jiang

Guo

et al. 2016

Biotechnol Biofuels

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BackgroundChina is the largest sweet potato producer and exporter in the world. Sweet potato residues (SPRs) separated after extracting starch account for more than 10 % of the total dry matter of sweet potatoes. In China, more than 2 million tons of SPRs cannot be utilized, and the unutilized SPRs are perishable and result in environmental pollution. Thus, an environmentally friendly and highly efficient process for bioethanol production from SPRs should be developed.ResultsThe swelling behaviour of cellulose causes high-gravity sweet potato residues to be recalcitrant to enzymatic hydrolysis. Cellulase plays a major role in viscosity reduction and glucose production. In contrast, pectinase has a minor role in viscosity reduction but acts as a “helper protein” to assist cellulase in liberating glucose, especially at low cellulase activity levels. In total, 153.46 and 168.13 g/L glucose were produced from high-gravity SPRs with cellulase and a mixture of cellulase and pectinase, respectively. These hydrolysates were fermented to form 73.37 and 79.00 g/L ethanol, respectively. Each kilogram of dry SPR was converted to form 209.62 and 225.71 g of ethanol, respectively.ConclusionThe processes described in this study have an enormous potential for industrial production of bioethanol because they are environmentally friendly, highly productive, economic with low cost, and can be easily manipulated.Electronic supplementary materialThe online version of this article (doi:10.1186/s13068-016-0464-7) contains supplementary material, which is available to authorized users.

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A Weibull statistics‐based lignocellulose saccharification model and a built‐in parameter accurately predict lignocellulose hydrolysis performance

Cited by 9 publications

References 30 publications

Phenolic compounds: Strong inhibitors derived from lignocellulosic hydrolysate for 2,3‐butanediol production by Enterobacter aerogenes

Phenolic compounds: Strong inhibitors derived from lignocellulosic hydrolysate for 2,3‐butanediol production by Enterobacter aerogenes

Gluconic Acid Production from Potato Waste by Gluconobacter oxidans Using Sequential Hydrolysis and Fermentation

An environmentally friendly and productive process for bioethanol production from potato waste

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