Evolution of main chemical components content and monosaccharidic content of hemicelluloses in sorghum and corn during their growth

Godin, Bruno;Agneessens, R.;Schmit, T.;Lamaudière, Stéphane;Delcarte, J.;et.al.
(2012) Ph.D. Student Day of the Environmental sciences, Technologies and Management (ENVITAM) and Process engineering (GEPROC) Graduate Schools — Location: Gembloux, Belgium (8.February.2012)

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Authors
  • Godin, BrunoUCLouvain
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  • Agneessens, R.
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  • Schmit, T.
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  • Lamaudière, StéphaneUCLouvain
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  • Gerin, Patrickorcid-logoUCLouvain
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  • Delcarte, J.
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Abstract
Sorghum and corn are promising annual lignocellulosic crops in the field of bioenergy and biorefinery owing to their high polysaccharides content and high biomass yield. The optimal valorization of their cellulosic and hemicellulosic components in lignocellulose-based biorefineries requires a good knowledge of their available biomass contents, and of their molecular composition. The main chemical components (cellulose, hemicelluloses, lignin, total soluble sugars, starch, proteins and mineral compounds) and more specifically the monosaccharidic composition of cellulose and hemicelluloses (cellulosic glucan, xylan, arabinan, mannan, galactan and hemicellulosic glucan) were analyzed in two annual lignocellulosic crops: sorghum (Sorghum bicolor (L.) Moench ; fiber cultivars : H133 and CA25 ; sugar cultivars : Zerberus, Maja and Enr10) and corn (Zea mays L. ; fiber cultivars : Beethoven, Coryphée and Ronaldinio). These crops were harvested at 5 different periods: July, August, September, October or March. Cellulose and hemicelluloses contents range respectively from 16.2 to 38.4 and from 14.8 to 27.3 g (100gDM)-1 while lignin, total soluble sugars, starch, proteins and mineral compounds contents range from 2.0 to 7.8, 0.2 to 17.2, 0 to 44.2, 4.3 to 23.0 and 1.6 to 18.7 g (100gDM)-1, respectively. The main hemicellulosic components and their corresponding range expressed in g (100gDM)-1 were by order of decreasing importance: xylan (8.3 to 22.3), hemicellulosic glucan (1.27 to 4.39), arabinan (1.71 to 2.96), galactan (0.25 to 1.20) and mannan (0.20 to 0.96). The harvest period has the most significant influence on the main chemical components and the structural polysaccharide composition, while the influence of cultivar is only rarely significant.
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Godin, B., Agneessens, R., Schmit, T., Lamaudière, S., Goffart, J.-P., Gerin, P., Stilmant, D., & Delcarte, J. (2012). Evolution of main chemical components content and monosaccharidic content of hemicelluloses in sorghum and corn during their growth. Ph.D. Student Day of the Environmental sciences, Technologies and Management (ENVITAM) and Process engineering (GEPROC) Graduate Schools, Gembloux, Belgium. https://hdl.handle.net/2078.5/35724