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KMID : 1007520030120040346
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Food Science and Biotechnology
2003 Volume.12 No. 4 p.346 ~ p.350
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Effect of Leaf Scald on the Content of Sucrose and Polysaccharides of Two Sugarcane Cultivars
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Fontaniella, Blanca
Millanes, AnaMari´a/Pino～n´, Dolores/Rodriguez, Carlos W./Vicente, Carlos/Legaz, Mari´a-Estrella
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Abstract
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Juices from scald-diseased plants of sugarcane, cv. Cuba 435-72, contains amounts of fructose, glucose and reducing compounds higher than those found in healthy specimens. Consequently, the amount of sucrose decreases in parallel to the enhanced activity of both acidic and neutral invertases. Heterofructans of high and mid-molecular size also increase in diseased plants. However, the fore-mentioned changes are very different to that of cultivar Cuba 120-78 when analysed. The amounts of glucose and reducing compounds decrease, whereas the amount of fructose does not significantly change in diseased plants. Sucrose concentration slightly increases in parallel to the low acidic invertast activity. The amount of polysaccharides of high molecular mass does not change, whereas that of mid-molecular mass polysaccharides dramatically increases in juices obtained from diseased plants. The production of sugar crystals from sucrose solutions is altered by the presence of these polysaccharides, more extensively by those obtained from badly stalks.
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