SA (1.5%, w/v) and XG (0.3, 0.5 and 1.0%, w/v) were
dispersed in distilled water. XG–SA dispersion (80 ml) was
dropped through a 1.2mm inner diameter needle, from hypodermic
syringe into 0.45M calcium chloride solution (200 ml).
The composite gel beads were cured in this solution for 1 h, then
filtered, and rinsed several times with distilled water. The beads
were dried at room temperature for 48 h, followed at 45 ◦C for
12–16 h. To prepare the DCA beads, DS (1%, w/v) was added
into the dispersion and completely dissolved with a homogenizer
for 5 min before cross-linking process, and then the preparation
was proceeded as described above.
SA (1.5%, w/v) and XG (0.3, 0.5 and 1.0%, w/v) weredispersed in distilled water. XG–SA dispersion (80 ml) wasdropped through a 1.2mm inner diameter needle, from hypodermicsyringe into 0.45M calcium chloride solution (200 ml).The composite gel beads were cured in this solution for 1 h, thenfiltered, and rinsed several times with distilled water. The beadswere dried at room temperature for 48 h, followed at 45 ◦C for12–16 h. To prepare the DCA beads, DS (1%, w/v) was addedinto the dispersion and completely dissolved with a homogenizerfor 5 min before cross-linking process, and then the preparationwas proceeded as described above.
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