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ABSTRACT Gelation behaviors of konjac glucomannan (KGM) samples processed via microwave or water bath heating were studied. The microwave-heated gels had significantly better viscoelasticity and stronger KGM molecular chain interactions… Click to show full abstract
ABSTRACT Gelation behaviors of konjac glucomannan (KGM) samples processed via microwave or water bath heating were studied. The microwave-heated gels had significantly better viscoelasticity and stronger KGM molecular chain interactions than water-bath-heated gels. Scanning electron microscopy analysis of the KGM gels revealed a concentrated, uniform network microstructure for the microwave-heated gels and a dense layered structure for the water-bath-heated gels. Microwave heating promotes hydrogen bonding while preserving the molecular chain. Hence, it can be used to improve the gelation properties and micromorphology of KGM without damaging its structure.
Journal Title: International Journal of Food Properties
Year Published: 2017
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