Nanostructure of natural and model cell wall materials
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Department of Microstructure and Mechanics of Biomaterials, Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
Faculty of Chemistry, Maria Curie-Skłodowska University, M. Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland
Int. Agrophys. 2010, 24(2): 107–114
Cell walls are the major component of plant tissue which significantly influence on textural properties of fruit and vegetables. Geometrical dimensions of parenchyma cells are very small what makes impossible studying their mechanical properties in the natural state. An alternative is creating of a model artificial cell wall consisting of polysaccharides which imitate properties of the natural cell wall. Polysaccharides network based on bacterial cellulose supplemented with xyloglucan and pectin was proposed as the model cell wall. In this experiment, the nanostructure of the model and the natural cell walls on the basis of their atomic force microscope topographs was compared in order to evaluate correctness of methodology of production of artificial cell walls. It was demonstrated that the bacterial materials have very similar artificial structure to the natural cell walls. However, considering the chemical composition, the most suitable as the model is the BCPX material consisting of bacterial cellulose, pectin and xyloglucan.