Anthocyanins from water extracts of the mulberry fruits (Morus alba L./Jul cultivars) were
adsorbed on calcium alginate beads. The beads were produced by external gelation using
different concentrations of alginate solution. The calcium alginate beads were studied on
capability of water, mulberry extract adsorption and anthocyanin stability at high
temperature. The adsorption ability of the bead was found to be depended on the pH of the
aqueous media. Mulberry extracts (pH4.3) had the highest adsorption at 1684.30±154.80
%(wt/wt). Beads (1.5%Alginate, ALG) average size were at 415.63±13.09 μm. Water
(pH6.8) adsorption of the same type of beads was at 242.68±2.59 %(wt/wt) (325.00±17.09
μm). Anthocyanin encapsulation efficiency was at 17.08±0.25 mg/g Dry weight. Stability of
adsorbed anthocyanin on calcium alginate bead was studied. After heat exposure at 40 oC and
100oC for 10 hrs, anthocyanin was at 92%wt and 24%wt, respectively. Calcium alginate
beads enhanced anthocyanin stability in the beads at these conditions by 10-40%. These
results provided the useful data for process and storage condition of mulberry products.