Contents of various sources of glucose and fructose in rice straw, a potential feedstock for ethanol production in Japan

Park, Jeung-yil; Kanda, Eiji; Fukushima, Akira; Motobayashi, Kota; Nagata, Kenji; Kondo, Motohiko; Ohshita, Yasuo; Morita, Satoshi; Tokuyasu, Ken

doi:10.1016/j.biombioe.2011.05.032

Cited by 30 publications

(17 citation statements)

References 8 publications

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“…Rice straw often contains significant amounts of starch. Starch content can vary substantially with developmental stage and with other factors, including growth conditions (Matsuki et al 2010;Park et al 2011). Starch content strongly a ects total glucan content in rice straw.…”

Section: Resultsmentioning

confidence: 99%

Rapid analysis of transgenic rice straw using near-infrared spectroscopy

Hattori

Murakami

Mukai

et al. 2012

Plant Biotechnology

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A rapid near-infrared (NIR) spectroscopy method was established to predict the lignin and starch contents and enzymatic sacchari cation e ciency of transgenic rice (Oryza sativa cv. Nipponbare) straw wherein expression of genes encoding lignin synthetic enzymes are regulated. Strong correlations were obtained between laboratory wet chemistry values and the NIR-predicted values. is method is useful to develop transgenic rice where cell-wall formation is engineered.

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Section: Resultsmentioning

confidence: 99%

Rapid analysis of transgenic rice straw using near-infrared spectroscopy

Hattori

Murakami

Mukai

et al. 2012

Plant Biotechnology

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“…The selection of an appropriate carbon source always plays a crucial role on the process economics of xylanase production (Beg et al 2001;Pandya and Gupte 2012). With the aim of reducing the substrate cost, rice straw a major hemicellulose containing lignocellulosic biomass (Park et al 2011) was selected as a principle carbon source in the present study. Several raw materials have been indicated in the literature as suitable carbon sources for the production of lignocellulolytic enzymes by microorganisms such as oat wheat, oat spelt xylan (Chivero et al 2001;Georis et al 2000), wheat bran, arabinoxylan (Bataillon et al 2000), wheat bran (Fujimoto et al 1995), sugarcane bagasse (Martınez-Trujillo et al 2003), rice bran (Dhillon et al 2000) and wild sugarcane (Saccharum spontaneum) leaves .…”

Section: Resultsmentioning

confidence: 99%

Optimization of selective production media for enhanced production of xylanases in submerged fermentation by Thielaviopsis basicola MTCC 1467 using L16 orthogonal array

et al. 2012

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Enzymes have been the centre of attention for researchers/industrialists worldwide due to their wide range of physiological, analytical, food/feed and industrial based applications. Among the enzymes explored for industrial applications, xylanases play an instrumental role in food/feed, textile/detergent, paper and biorefinery based application sectors. This study deals with the statistical optimization of xylanase production by Thielaviopsis basicola MTCC 1467 under submerged fermentation conditions using rice straw, as sole carbon source. Different fermentation parameters such as carbon source, nitrogen source, inorganic salts like KH 2 PO 4 , MgSO 4 and pH of the medium were optimized at the individual and interactive level by Taguchi orthogonal array methodology (L 16

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“…Rice straw, together with other inedible lignocellulosic biomass products such as corn stover, sugarcane bagasse, and wheat straw, is expected to be a promising feedstock as an industrial fermentation substrate (Park et al 2011). In Japan, annual domestic production of rice straw accounts for about 9.6 Mt.…”

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CAD2 deficiency causes both brown midrib and gold hull and internode phenotypes in Oryza sativa L. cv. Nipponbare

Koshiba

Murakami

Hattori

et al. 2013

Plant Biotechnology

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Several brown midrib (bm) mutants have so far been isolated from the C4 grasses, maize, sorghum and pearl millet, but have not been detected in C3 grasses including rice (Oryza sativa). In the present study we characterized the cad2 (cinnamyl alcohol dehydrogenase 2) null mutant isolated from retrotransposon Tos17 insertion lines of Oryza sativa L. ssp. japonica cv. Nipponbare. This mutant exhibited brown-colored midribs in addition to hulls and internodes, clearly indicating both bm and gold hull and internode (gh) phenotypes. The enzymatic saccharification efficiency in the culm of cad2 null mutant was increased by 16.1% than that of the control plants. The lignin content of the cad2 null mutant was 14.6% lower than that of the control plants. Thioacidolysis of the cad2 null mutant indicated the presence of cinnamaldehyde structures in the lignin. Taken together, our results show that deficiency of OsCAD2 causes the bm phenotype in addition to gh, and that the coloration is probably due to the accumulation of cinnamaldehyde-related structures in the lignin. Additionally, this cad2 null mutant was useful to silage purposes and biofuel production. Lignin is a complex phenylpropanoid polymer, and is biosynthesized via oxidative coupling of phydroxycinnamyl alcohols (monolignols) and related compounds that are formed in the cinnamate/ monolignol pathway (Umezawa 2010). Lignin fills the spaces between cell wall polysaccharides and confers mechanical strength and imperviousness to the cell wall (Boerjan et al. 2003). Therefore, lignin biosynthesis is closely related to the evolution of land plants.Lignin has several properties that present obstacles to chemical pulping, forage digestion, and enzymatic hydrolysis of plant cell wall polysaccharides for biorefining. For these processes, it would be beneficial for plant materials to either have less lignin, or to have lignin that is easier to remove. Mutant plants in which genes encoding lignin biosynthetic enzymes are downregulated are generally expected to have lower lignin content and higher enzymatic saccharification efficiency. For these reasons, lignin biosynthesis is an area of great interest (Chiang 2006;Dixon and Reddy 2003;Vanholme et al. 2008;Weng et al. 2008).Several brown midrib (bm or bmr for sorghum) mutants have been isolated in maize (Zea mays), sorghum (Sorghum bicolor), and pearl millet (Pennisetum glaucum) arising by either spontaneous or chemical mutagenesis (Barrière et al. 2004;Cherney et al. 1991;Sattler et al. 2010). The characteristic reddish-brown to tan colored midribs of the mutant leaf blades contrasts with the pale green midribs of the wild type. In addition, the mutants show similar coloration in stalks and generally have reduced lignin content and higher in vitro digestibility compared with wild-type plants. Hence, the mutants have been receiving a lot of interest in relation not only to silage purposes (Barrière et al. 2004;Cherney et al. 1991;Sattler et al. 2010), but also biofuel production (Sattler et al. 2010).In maize, six...

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Contents of various sources of glucose and fructose in rice straw, a potential feedstock for ethanol production in Japan

Cited by 30 publications

References 8 publications

Rapid analysis of transgenic rice straw using near-infrared spectroscopy

Rapid analysis of transgenic rice straw using near-infrared spectroscopy

Optimization of selective production media for enhanced production of xylanases in submerged fermentation by Thielaviopsis basicola MTCC 1467 using L16 orthogonal array

CAD2 deficiency causes both brown midrib and gold hull and internode phenotypes in Oryza sativa L. cv. Nipponbare

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