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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, roč.~67, June, s.~148-156. ISSN~0268-005X. doi:10.1016/j.foodhyd.2017.01.011. 2017.
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