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Effect of the Pre-Treatment Severity on the Antioxidant Properties of Ethanol Organosolv Miscanthus x giganteus Lignin

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Natural Resources 2012年第2期3卷 29-34页

作者： Roland El Hage Dominique Perrin Nicolas Brosse Centre des Matériaux de Grande Diffusion (CMGD) Ecole des Mines d’Alès France Laboratoire d’Etude et de Recherche sur le MAteriau Bois Faculté des Sciences et Techniques Nancy-Université Boulevard des Aiguillettes France Laboratoire d’Etude et de Recherche sur le MAteriau Bois Faculté des Sciences et Techniques Nancy-Université Boulevard des Aiguillettes France.

The effect of the severity of an organosolv treatment of Miscanthus x giganteus on antioxidant capacity of the obtained lignin was studied. Four organosolv lignins extracted with different severity conditions were chosen and tested. Results obtained using the methyl linoleate method have shown a correlation between oxygen uptake index and the combined severity. It was found that lignin extracted at higher severity pre-treatment and with a higher phenolic hydroxyl content, lower aliphatic hydroxyl content, molecular weight and polydispersity has the highest antioxidant capacity.

关键词： Miscanthus x giganteus Organosolv Lignin Antioxidant Combined Severity Molecular Weight Phenolic and Aliphatic Hydroxyl

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Growth Rates of Giant Miscanthus (Miscanthus×giganteus) and Giant Reed (Arundo donax) in a Low-Input System in Arkansas, USA

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American Journal of Plant Sciences 2018年第12期9卷 2371-2384页

作者： Mohan Acharya David M. Burner Amanda J. Ashworth Felix B. Fritschi Taylor C. Adams Department of Poultry Science University of Arkansas Fayetteville AR USA US Department of Agriculture Dale Bumpers Small Farms Research Center Booneville AR USA US Department of Agriculture Poultry Production and Product Safety Research Unit Fayetteville AR USA Division of Plant Science University of Missouri Columbia MO USA

The US Department of Energy is currently building strategies for the expansion of clean and renewable energy sources, and tall, rapidly-growing grasses such as giant miscanthus (Miscanthus × giganteus) and giant reed (Arundo donax) are two of the many of species that could fill this renewable energy niche. The objective was to compare stalk growth components of giant miscanthus and giant reed, in a low-input system (no irrigation and no fertilizer use) in Arkansas, USA. Due to the potential invasiveness of giant reed, our study was conducted on an upland site to minimize escape. Plant height and dry weight per stalk were measured every week for two consecutive growing seasons in 2012 and 2013. Leaf area index (LAI) was measured every two weeks from May to September in 2012. A significant species × day interaction occurred for plant height and dry weight per stalk, due to the relatively greater height and weight of giant reed compared to giant miscanthus after May. Stalk elongation rate was greater for giant reed than giant miscanthus (1.85 and 1.11 cm day-1, respectively). Leaf area index differed between species, giant reed (10.4 m2 m-2) > giant miscanthus (4.4 m2 m-2). We showed that giant reed produced taller, heavier stalks, and had a greater stalk elongation rate, compared to giant miscanthus. For sustainable bioenergy production from giant reed in Arkansas, further studies should be performed to determine ideal number of harvests per year and associated production cost.

关键词： Miscanthus × giganteus Arundo donax Growth Stalk Elongation Rate Dry Weight per Stalk

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Dual-Use Bioenergy-Livestock Feed Potential of Giant Miscanthus, Giant Reed, and Miscane

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Agricultural Sciences 2017年第1期8卷 97-112页

作者： David M. Burner Amanda J. Ashworth Daniel H Pote Jim R. Kiniry David P. Belesky James H. Houx III Paul Carver Felix B. Fritschi US Department of Agriculture Agricultural Research Service Dale Bumpers Small Farms Research Center Booneville AR USA US Department of Agriculture Agricultural Research Service Poultry Production and Products Safety Research Fayetteville AR USA Grassland Soil and Water Research Laboratory USDA ARS Temple TX USA West Virginia University Plant & Soil Sciences Morgantown WV USA Division of Plant Sciences University of Missouri Columbia MO USA New Energy Farms Leamington Canada

High yielding perennial grasses could integrate bioenergy-livestock operations, thereby, offsetting diversions of cropland to lignocellulosic crops, but research is needed to determine chemical composition and digestibility of leaf and stem fractions that might affect downstream reside uses. The objective of this study was to compare feedstock quality of leaf and stem tissues of dedicated bioenergy feedstocks: giant miscanthus (Miscanthus × giganteus), giant reed (Arundo donax), and miscane (Saccharum hybrid × Miscanthus spp.) when grown with or without supplemental irrigation on an upland site. Three species were space-planted on a silt loam soil in March 2007 and harvested prior to the first freeze in plant-cane, first ratoon, and second-ratoon crops for three years. Giant miscanthus leaf tissue had greatest acid detergent lignin and cellulose, and lowest concentrations of nitrogen (N) and total nonstructural carbohydrates (TNC) in ratoon crops. Giant reed leaf tissue had greatest concentrations of in vitro digestible dry matter (IVDMD), TNC, and N (P ≤ 0.05). Conversely, miscane stem tissue had greatest concentrations of IVDMD, TNC, hemicellulose, and low dry matter and combustible energy (P ≤ 0.05). Results suggest all species’ residue has positive feedstock attributes for thermochemical bioenergy conversion, and albeit giant miscanthus has very little potential value as fodder. Miscane stem and giant reed leaf tissue have potential value as livestock feed, although giant reed is not currently recommended for planting. Further research is needed on dietary composition, acceptability, voluntary intake, and live weight gain before any of these species are recommended as livestock feed sources.

关键词： Arundo donax Invasive Species Miscanthus × giganteus Agricultural Residue Nutritive Value Saccharum spp. Hybrid Tissue Components Thermochemical Conversion Feedstock Traits

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外来植物奇岗的生物学特征

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草业科学 2008年第2期25卷 26-28页

作者：席庆国洪浩东营市农业科学研究所盐生植物园山东东营257091 北京大学环境科学与工程学院北京100871

奇岗Miscanthus x giganteus是由日本引入欧洲的一种高大禾草,在欧洲已有数十年的栽培历史。近20年来被作为有潜力的工业原料植物,进行了深入的研究。这种植物近来被作者引入中国,其汉语名称暂定为奇岗(商品名芒杞)。文中对这种植物提... 详细信息

奇岗Miscanthus x giganteus是由日本引入欧洲的一种高大禾草,在欧洲已有数十年的栽培历史。近20年来被作为有潜力的工业原料植物,进行了深入的研究。这种植物近来被作者引入中国,其汉语名称暂定为奇岗(商品名芒杞)。文中对这种植物提出了新的和详尽的描述。这种植物的主要特点是:杂交种、三倍体、花不育、花序外形似荻M.sacchariflorus;横生茎与秆丛集,秆直立。

关键词： Miscanthus x giganteus 高大禾草能源植物

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