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首页> 外文期刊>Bioenergy research >Sugar Yield of Sweet Pearl Millet and Sweet Sorghum as Influenced by Harvest Dates and Delays Between Biomass Chopping and Pressing
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Sugar Yield of Sweet Pearl Millet and Sweet Sorghum as Influenced by Harvest Dates and Delays Between Biomass Chopping and Pressing

机译：甜玉米和甜高粱的糖产量受收获日期和生物量切碎和压榨延迟的影响

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摘要

Sweet pearl millet [Pennisetum glaucum (L.) R.Br] and sweet sorghum [Sorghum bicolor (L.) Moench] have been identified as possible ethanol feedstocks because of their high biomass yield and concentration of readily fermentable sugars, but the effects of harvest dates and delays between biomass harvest and pressing on sugar yield and concentration are poorly known. The objective of this study was to determine the effects of two species, two harvest dates (August and September), and four delays between chopping and pressing (0.5, 2, 4, and 6 h) on yields and concentrations of nonstructural carbohydrates [NSC = water-soluble carbohydrates (WSC) + starch] of the biomass, bagasse, and extracted juice. An experiment was conducted at two contrasted sites in Québec, Canada [Saint-Augustin-de-Desmaures, 2,300–2,500 corn heat units (CHU); and Sainte-Anne-de-Bellevue, 2,900–3,100 CHU], in 2010. Sweet sorghum had lower biomass yield (15.8 vs. 20.4 Mg dry matter (DM) ha−1), but greater biomass NSC concentration (242 vs. 128 g kg−1 DM), extracted juice NSC concentration (61 vs. 42 g L−1) and yield (2.8 vs. 2.2 Mg ha−1) than sweet pearl millet. Delaying harvest increased biomass yield (+7 Mg DM ha−1), NSC concentrations of biomass (+97 g kg−1 DM), bagasse (+70 g kg−1 DM), and extracted juice (+38 g L−1), and NSC yield from the extracted juice (+1.6 Mg ha−1). The maximum extracted juice NSC yield (3.9 Mg ha−1) was obtained with sweet sorghum harvested in September. Delaying pressing the biomass up to 6 h after chopping did not affect NSC concentration and yield of the extracted juice.
机译：甜珍珠粟[Pennisetum glaucum（L.）R.Br]和甜高粱[Sorghum bicolor（L.）Moench]已被确定为可能的乙醇原料，因为它们具有较高的生物量产量和易于发酵的糖浓度，但是收获日期以及生物质收获与压榨糖产量和浓度之间的延迟知之甚少。这项研究的目的是确定两个物种，两个收获日期（八月和九月）以及切碎和压榨之间的四个延迟（0.5、2、4和6小时）对非结构性碳水化合物[NSC]的产量和浓度的影响=生物质，蔗渣和提取汁液的[水溶性碳水化合物（WSC）+淀粉]。在加拿大魁北克的两个对比地点进行了一项实验[圣奥古斯丁德德玛雷斯，2,300–2,500玉米热量单位（CHU）；和Sainte-Anne-de-Bellevue，2,900–3,100 CHU]，2010年。甜高粱的生物量较低（15.8 vs. 20.4 Mg干物质ha-1），但生物质NSC浓度较高（242 vs. 128） g kg-1 DM），提取的果汁NSC浓度（61 vs.42 g-1）和产量（2.8 vs.2.2 Mg ha-1）比甜珍珠小米。延迟收获提高了生物量的产量（+7 Mg DM ha-1），NSC浓度的生物量（+97 g kg-1 DM），蔗渣（+70 g kg-1 DM）和提取的果汁（+38 g L-1 ）和提取汁液（+1.6 Mg ha-1）的NSC产量。九月份收获的甜高粱获得了最高提取汁液NSC产量（3.9 Mg ha-1）。切碎后将生物质压紧至6小时不影响NSC浓度和提取汁的产量。

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  • 来源
    《Bioenergy research》 |2015年第1期|100-108|共9页
  • 作者

    Amélia dos Passos Bernardes; Ga?tan F. Tremblay; Gilles Bélanger; Annie Brégard; Philippe Seguin; Anne Vanasse;

  • 作者单位

    1.Département de Phytologie Université Laval Québec QC G1V 0A6 Canada;

    2.Soils and Crops Research and Development Centre Agriculture and Agri-Food Canada 2560 Hochelaga Boulevard Québec QC G1V 2 J3 Canada;

    2.Soils and Crops Research and Development Centre Agriculture and Agri-Food Canada 2560 Hochelaga Boulevard Québec QC G1V 2 J3 Canada;

    1.Département de Phytologie Université Laval Québec QC G1V 0A6 Canada;

    3.McGill University Macdonald Campus 21111 Lakeshore Road Sainte-Anne-de-Bellevue QC H9X 3 V9 Canada;

    1.Département de Phytologie Université Laval Québec QC G1V 0A6 Canada;

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  • 正文语种 eng
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  • 关键词

    Sweet sorghum Sweet pearl millet Sugar yield Delay Harvest dates;

    机译：甜高粱甜珍珠小米糖产量延迟收获日期;

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