Tatyana I. Gromovykh , Irina A. Tarasova , Vadim V. Zefirov , Alexander A. Gulin , Ilya P. Ivanenko , Vyacheslav S. Molchanov , Elena P. Kharitonova , Olga I. Kiselyova
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引用次数: 0
Abstract
The scope of this work was to study the impact of viscosity and temperature on the microscale morphology of bacterial cellulose (BC) membranes grown on cultivation media containing sodium alginate (SA). The membranes were successfully produced by stationary cultivation of Gluconacetobacter hansenii at 25 °C and 28 °C in modified Hestrin-Schramm (HS) medium, containing various amounts of added SA. It was shown that cross-linking with Ca2+ ions prior to washing was mandatory for alginate retention in the BC matrix. The loading of alginate in resulting composites depended on the SA content in the cultivation medium and reached the saturation value of ca. 40 % at 2 % concentration. The introduction of alginate in the BC membrane interfered with the liquid crystalline-like (LC-like) ordering of fibrils. The helical half-pitch was reduced from 65 μm for SA-free medium to 25–30 μm at the SA concentration of 2 %. For higher SA concentrations in the medium, the portions of membrane with LC-like ordering were strongly reduced, and more pores were formed.
期刊介绍:
Carbohydrate Polymers stands as a prominent journal in the glycoscience field, dedicated to exploring and harnessing the potential of polysaccharides with applications spanning bioenergy, bioplastics, biomaterials, biorefining, chemistry, drug delivery, food, health, nanotechnology, packaging, paper, pharmaceuticals, medicine, oil recovery, textiles, tissue engineering, wood, and various aspects of glycoscience.
The journal emphasizes the central role of well-characterized carbohydrate polymers, highlighting their significance as the primary focus rather than a peripheral topic. Each paper must prominently feature at least one named carbohydrate polymer, evident in both citation and title, with a commitment to innovative research that advances scientific knowledge.