L-ascorbic acid is a water soluble vitamin (vitamin C) widely used as an additive in foods and cosmetics.\nIt has high instability against certain environmental factors; the main cause of its deterioration\nis oxidation. Microencapsulation is an effective protection technique of L-ascorbic acid\nfrom its degradation reactions. This work is focused on the encapsulation of L-ascorbic acid by\nspray drying technique using sodium alginate as wall material. The microcapsules morphology\nwas observed by scanning electron microscopy (SEM) and the encapsulation efficiency was determined\nby spectrophotometric analysis. Results showed that encapsulation efficiency was of\n93.48% and after 30 days was of 92.55%; differences were not significant, so that the stability of\nL-ascorbic acid was not affected. Encapsulation yields obtained were low, at around 30%, but the\nmicrocapsules morphology obtained is spherical.
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