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@article{1368241, author = {Poštulková, Hana and Chamradová, Ivana and Pavliňák, David and Humpa, Otakar and Jančář, Josef and Vojtová, Lucy}, article_location = {Oxford}, article_number = {June}, doi = {http://dx.doi.org/10.1016/j.foodhyd.2017.01.011}, keywords = {natural gum;polysaccharide;gum karaya;sterculia urens;solubilization;deacetylation}, language = {eng}, issn = {0268-005X}, journal = {Food Hydrocolloids}, title = {Study of effects and conditions on the solubility of natural polysaccharide gum karaya}, url = {http://www.sciencedirect.com/science/article/pii/S0268005X16304817}, volume = {67}, year = {2017} }
TY - JOUR ID - 1368241 AU - Poštulková, Hana - Chamradová, Ivana - Pavliňák, David - Humpa, Otakar - Jančář, Josef - Vojtová, Lucy PY - 2017 TI - Study of effects and conditions on the solubility of natural polysaccharide gum karaya JF - Food Hydrocolloids VL - 67 IS - June SP - 148-156 EP - 148-156 PB - Elsevier Science SN - 0268005X KW - natural gum;polysaccharide;gum karaya;sterculia urens;solubilization;deacetylation UR - http://www.sciencedirect.com/science/article/pii/S0268005X16304817 L2 - http://www.sciencedirect.com/science/article/pii/S0268005X16304817 N2 - Natural polysaccharide gum karaya (GK, Sterculia urens) is a plant exudates widely available and relatively cheap biomaterial, which is used in food industry. However, GK is insoluble in water and it limits subsequent processing and broader utilization in medicine. Different conditions for the solubilization of GK were evaluated in this work (e.g. type and concentration of hydroxide, concentration of GK dispersion and time of solubilization process) which were not published before. GK samples were compared using different types of characterization techniques such as ATR-FTIR, NMR, TGA-FTIR, DSC, SEM and rheology. Optimized conditions for successful GK solubilization proceeded with 1 mol l-1 of sodium or potassium hydroxide and 2 wt% dispersion of GK at room temperature. A novel mechanism was suggested and by this mechanism the complex plant based biopolymer can be solubilized through the careful control of its ionic environment and degree of deacetylation. Resulted water soluble GK seems to be promising biomaterial forming hydrogels useful in regenerative medicine. ER -
POŠTULKOVÁ, Hana, Ivana CHAMRADOVÁ, David PAVLIŇÁK, Otakar HUMPA, Josef JANČÁŘ a Lucy VOJTOVÁ. Study of effects and conditions on the solubility of natural polysaccharide gum karaya. \textit{Food Hydrocolloids}. Oxford: Elsevier Science, 2017, roč.~67, June, s.~148-156. ISSN~0268-005X. Dostupné z: https://dx.doi.org/10.1016/j.foodhyd.2017.01.011.
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