Fractionation of the polysaccharides from corn leaves by extraction with dilute alkali furnishes a branched chain arabinoxylan containing D-glucuronic acid, small amounts of 4-O-methyl-D-glucuronic acid and D-glucose. Complete acid hydrolysis of the periodate oxidised polysaccharide gives ethylene glycol, glycerol, erythritol and D-xylose in a molar ratio of 1:34:8:18. Hydrolysis of the methylated hemicellulose has yielded a mixture of 2-O- and 3-O-methyl-D-xylose; 2,3-di-O-methyl-D-xylose; 2,3,4-tri-O-methyl-D-xylose; 2,3,5-tri-O-methyl-L-arabinose and 2-O-(2,3,4-tri-O-methyl-α-D-glucopyranosyluronic acid)-3-O-methyl-D-xylose in a molar ratio of 4.6:3:40:1:4.5:6. The side chains of the polysaccharide consist of single units of uronic acid and single units of L-arabofuranose joined to positions 2 and 3, respectively, of D-xylo-pyranose units of the xylan molecular framework.
A similar polysaccharide is present in corn stalks.
The variety used was Golden Bantam. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/34487 |
| Date | January 1970 |
| Creators | Kabir, Mohammad Shahjahan |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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