Table 2.

Active Self-healing Encapsulation of Ovalbumin (OVA) by PLGA Microspheres^a

theoretical % (w/w) loadingb	measured % (w/w) loading	% encapsulation efficiencyc	OVA capacity of CaHPO4 within microspheresd,e	OVA capacity of unencapsulated CaHPO4 geld,f
1.0	0.60 ± 0.05	56 ± 6	0.27 ± 0.03	0.21 ± 0.01

^aEncapsulation was performed using 20 mg of microspheres in 0.4 mL of a 0.5 mg/mL OVA solution. Data represent mean ± SEM, n = 3.

^bmg of total OVA in loading solution/(mg of microspheres in sample + mg of total OVA in solution).

^cEfficiency relative to the original mass of OVA in the loading solution.

^dmg OVA loaded/mg CaHPO₄ gel.

^eBased upon the determined mass of CaHPO₄ gel loaded within the microspheres.

^fDetermined for OVA loaded onto unencapsulated CaHPO₄ gel.