Investigation of gellan networks and gels by atomic force microscopy
作者： A. P. Gunning , A. R. Kirby , M. J. Ridout , G. J. Brownsey , V. J. Morris
DOI: 10.1021/MA960700H
关键词:
摘要: Methods previously developed for the atomic force microscopy (AFM) imaging of individual polysaccharides (Kirby, A. R.; Gunning, P.; Morris, V. J. Biopolymers 1996, 38, 355−366) have been extended in order to image networks and gels formed by bacterial polysaccharide gellan gum. Networks were air-drying solutions K+ onto freshly cleaved mica. AFM images obtained direct current contact mode at constant under butanol. Network formation can be inhibited diluting stock solution or converting into tetramethylammonium salt form. Inhibition network led heterogeneous populations aggregates (gel precursors). Attempts made surface bulk aqueous The quality improved with increasing gel modulus. For rigid acid-set gels, molecular resolution was achieved, revealing a bifurcated branched fibrous network.
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