Exothermic events on heating of semi-dilute konjac glucomannan-water systems
Differential scanning calorimetric experiments were designed and conducted to investigate the occurrence of two intriguing exothermic events, hitherto never reported before, on programmed heating of semi-dilute (≤1.0%, w/w) aqueous konjac glucomannan (KGM) solutions to temperatures above 70 °C. Thes...
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Published in | Carbohydrate polymers Vol. 61; no. 3; pp. 368 - 373 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
29.08.2005
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | Differential scanning calorimetric experiments were designed and conducted to investigate the occurrence of two intriguing exothermic events, hitherto never reported before, on programmed heating of semi-dilute (≤1.0%, w/w) aqueous konjac glucomannan (KGM) solutions to temperatures above 70
°C. These exothermic transitions, with peak temperatures of 74–80
°C and 115–132
°C, respectively, were attributed to disorder-order transitions of different kinds. The results of storage and annealing experiments suggest that these transitions were time-dependent. The ordered structures formed on heating were heat-stable, at least up to 180
°C. |
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ISSN: | 0144-8617 1879-1344 |
DOI: | 10.1016/j.carbpol.2005.06.001 |