부산대학교 도서관

Low methoxyl pectin and calcium ion have high-viscosity coacervation and are used to prepare jam and hydrogel product. Recently, the microencapsulation technique is quite popular for the production of a compound of pectin and calcium ion and is often used in the health-care, biotech and pharmaceutical field. The compound is usually used as tablet binder, coating agent, drug encapsule, drug delivery carrier, improvement of control release and so on. In this study, we use the low methoxyl pectin as the material to study the formability and quality index of Ca-pectin hydrogel bead treated by different pectin concentrations (2.5, 5.0 and 7.5 %), calcium chloride concentrations (0.05, 0.1, 0.5 and 1.0 M) and curing times (0.5, 5.0 and 20.0 min). The research result showed that the overall wet and dry hydrogel bead have increasing trend in higher completeness, higher hardness, and decreasing trend in less shrinkage, smaller particle size, lower water content and lower swelling capacity along with the increasing in the pectin concentration, calcium ion concentration and curing time. In the thermograms, the increase in the pectin concentration, calcium ion concentration and curing time lead to an increase in the onset temperature (To), peak temperature (Tp) and enthalpy (ΔH). The increased air flow (0~3 L/min) in the compressor would cause the particle size (2.70mm~0.32mm) and swelling capacity (-8.45%~9.0%) of the Ca-hydrogel to decrease. Moreover, there was more shrinking on the surface with more combination of pectin and calcium.