Abstract:
:The phase behavior of aqueous systems containing hyaluronan, at concentrations between 2 and 100 mg/L, and oppositely charged surfactants was investigated. A fluorescence probe technique revealed the formation of micellar structures on the hyaluronan in homogeneous systems well below the surfactant standard, critical, micellar concentration. Moreover, regions of gel-phase separation were revealed. A detailed phase diagram was, thus, constructed in the very diluted region and the hyaluronan concentration was found to be the main parameter controlling the phase behavior, in contrast to the charge ratio. The stability of hyaluronan-surfactant aggregates in the homogeneous systems while in storage at 4 °C (up to three months), against dilution, salt addition and on heating-cooling (between 10 and 50 °C) was also investigated. The aggregates were stable while in storage or upon increasing and decreasing the temperature. The dilution of hyaluronan-surfactant complexes or the addition of 0.15 M NaCl led to their disintegration. Finally, systems prepared in a 0.15 M NaCl solution showed that interactions are suppressed and no aggregation below the standard critical micellar concentration was observed.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Pilgrová T,Venerová T,Mravec F,Pekař Mdoi
10.1016/j.ijbiomac.2018.01.176subject
Has Abstractpub_date
2018-06-01 00:00:00pages
241-249eissn
0141-8130issn
1879-0003pii
S0141-8130(17)34468-9journal_volume
112pub_type
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