Straw yield and saccharification potential for ethanol in cereal species and wheat cultivars

Larsen, Søren Ugilt; Bruun, Sander; Lindedam, Jane

doi:10.1016/j.biombioe.2012.06.012

Cited by 45 publications

(45 citation statements)

References 17 publications

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“…When considered as feedstock for biofuel production, differences in digestibility among cultivars have been identified (Lindedam et al ., , ; Jensen et al ., ; Wu et al ., ; Murozuka et al ., ) although Larsen et al . () did not find a significant difference in the cultivars they assessed. The extent of the range of digestibility varied among the studies (Fig.…”

Section: Straw Digestibilitymentioning

confidence: 91%

“…One difficulty in identifying cultivars with high straw yields is that there are many environmental and management factors (discussed further in section ‘Crop management’) that influence straw yield (Engel et al ., ) such as sowing date and sowing density (Donaldson et al ., ), nitrogen and water availability (Engel et al ., ), and fungal infections and, therefore, fungicide treatment (Jørgensen & Olesen, ). Climatic conditions also have a large influence on straw yields; large‐scale assessment of wheat straw yields (see Larsen et al ., ; for references) found that there was considerable temporal variation, with 46% variation in the yearly averages, which was hypothesized to be a result of differences in weather between years. These environmental factors interact with genotypic factors (Engel et al ., ), further complicating the identification of high straw‐yielding cultivars.…”

Section: Straw Yieldmentioning

confidence: 99%

“…References for the four assessments and number of cultivars (n) assessed in each study: (a) Larsen et al . (), n = 10; (b) Lindedam et al . (, n = 5; (c) Lindedam et al .…”

Section: Straw Digestibilitymentioning

confidence: 99%

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Food and bioenergy: reviewing the potential of dual‐purpose wheat crops

2016

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Within the bioenergy debate, the ‘food vs. fuel’ controversy quickly replaced enthusiasm for biofuels derived from first‐generation feedstocks. Second‐generation biofuels offer an opportunity to produce fuels from dedicated energy crops, waste materials or coproducts such as cereal straw. Wheat represents one of the most widely grown arable crops around the world, with wheat straw, a potential source of biofuel feedstock. Wheat straw currently has limited economic value; hence, wheat cultivars have been bred for increased grain yield; however, with the development of second‐generation biofuel production, utilization of straw biomass provides the potential for ‘food and fuel’. Reviewing the evidence for the development of dual‐purpose wheat cultivars optimized for food grain and straw biomass production, we present a holistic assessment of a potential ideotype for a dual‐purpose cultivar (DPC). An ideal DPC would be characterized by high grain and straw yields, high straw digestibility (i.e. biofuel yield potential) and good lodging resistance. Considerable variation in these traits exists among current wheat cultivars, facilitating the selection of improved individual traits; however, increasing straw yield and digestibility could potentially have negative trade‐off impacts on grain yield and lodging resistance, reducing the feasibility of a single ideotype. Adoption of alternative management practices could potentially increase straw yield and digestibility, albeit these practices are also associated with potential trade‐offs among cultivar traits. Benefits from using DPCs include reduced logistics costs along the biofuel feedstock supply chain, but practical barriers to differential pricing for straw digestibility traits are likely to reduce the financial incentive to farmers for growing higher ‘biofuel‐quality’ straw cultivars. Further research is required to explore the relationships among the ideotype traits to quantify potential DPC benefits; this will help to determine whether stakeholders along the bioenergy feedstock supply chain will invest in the development of DPCs that provide food and fuel potential.

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Section: Straw Digestibilitymentioning

confidence: 91%

Section: Straw Yieldmentioning

confidence: 99%

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Food and bioenergy: reviewing the potential of dual‐purpose wheat crops

2016

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“…[30,31]. Briefly described, 200 mg of milled straw was first incubated with a mixture of thermostable a-amylase and amyloglucosidase (Megazyme International Ireland, Wicklow, Ireland) in order to de-starch the samples.…”

Section: Measurement Of Enzymatic Saccharificationmentioning

confidence: 99%

Concentration of mineral elements in wheat (Triticum aestivum L.) straw: Genotypic differences and consequences for enzymatic saccharification

Murozuka

Bang

Frydenvang

et al. 2015

Biomass and Bioenergy

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“…complexity of LCB vary with plant-type and agronomic conditions (Liu et al, 2009;Zhang et al, 2012) and consequently determine the processing strategies such as thermochemical pretreatments with dilute acid, ammonia, or hot water (Laser et al, 2002;Kim and Lee, 2006;Lau et al, 2010;Da Cruz et al, 2012;Guo et al, 2013) required to yield sugars upon enzymatic hydrolysis and subsequently ethanol production by fermentation process (Larsen et al, 2012). Assessment of the chemical compositions and structural characterization of LCB is, therefore, a prerequisite for the optimization of approaches in cellulosic bioethanol production (Liu et al, 2009).…”

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confidence: 99%

Evaluation and Selection of Potential Biomass Sources of North-East India towards Sustainable Bioethanol Production

et al. 2017

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Vegetation biomass production in North-East India within Indo-Burma biodiversity hotspot is luxuriant and available from April to October to consider their potential for bioethanol production. Potential of six lignocellulosic biomass (LCB) sources; namely, sugarcane bagasse (BG), cassava aerial parts (CS), ficus fruits (Ficus cunia) (FF), "phumdi" (floating biomass), rice straw (RS), and sawdust were investigated for bioethanol production using standard techniques. Morphological and chemical changes were evaluated by Scanning electron microscopy and Fourier transform infrared spectroscopy and quantity of sugars and inhibitors in LCB were determined by High performance liquid chromatography. Hydrothermally treated BG, CS, and FF released 954.54, 1,354.33, and 1,347.94 mg/L glucose and 779.31, 612.27, and 1,570.11 mg/L of xylose, respectively. Inhibitors produced due to effect of hydrothermal pretreatment ranged from 42.8 to 145.78 mg/L acetic acid, below detection level (BDL) to 17.7 µg/L 5-hydroxymethylfurfural, and BDL to 56.78 µg/L furfural. The saccharification efficiency of hydrothermally treated LCB (1.35-28.64%) was significantly higher compared with their native counterparts (0.81-17.97%). Consolidated bioprocessing of the LCB using MTCC 1755 (Fusarium oxysporum) resulted in maximum ethanol concentration of 0.85 g/L and corresponded to 42 mg ethanol per gram of hydrothermally treated BG in 120 h followed by 0.83 g/L corresponding to 41.5 mg/g of untreated CS in 144 h. These ethanol concentrations corresponded to 23.43 and 21.54% of theoretical ethanol yield, respectively. LCB of CS and FF emerged as a suitable material to be subjected to test for enhanced ethanol production in future experiments through efficient fermentative microbial strains, appropriate enzyme loadings, and standardization of other fermentation parameters.

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Straw yield and saccharification potential for ethanol in cereal species and wheat cultivars

Cited by 45 publications

References 17 publications

Food and bioenergy: reviewing the potential of dual‐purpose wheat crops

Food and bioenergy: reviewing the potential of dual‐purpose wheat crops

Concentration of mineral elements in wheat (Triticum aestivum L.) straw: Genotypic differences and consequences for enzymatic saccharification

Evaluation and Selection of Potential Biomass Sources of North-East India towards Sustainable Bioethanol Production

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