Release Kinetic Studies of Stevia rebaudiana Extract Capsules from Sodium Alginate and Inulin by Ionotropic Gelation

Table 4

Constant (K), correlation coefficient (), and release exponent () of different kinetic models for phenolic compounds release.

Treatment	Zero‐order		First‐order		Higuchi equation		Korsmeyer–Peppas equation		Ritger–Peppas equation		Release exponent
	1	25.2887	0.9337	0.1960	0.8450	43.4997	0.9650	71.4719	0.9391	86.3898	0.9508	0.3190
2	24.3787	0.9452	0.2460	0.9291	43.0789	0.9831	74.4419	0.9309	96.3699	0.9088	0.2879
3	28.7888	0.9631	0.5000	0.9415	45.3245	0.9204	66.6062	0.6756	75.8300	0.9478	0.2375
4	23.2425	0.8657	0.3035	0.7972	40.2989	0.9135	78.9730	0.9727	99.4612	0.9298	0.2401
5	27.0733	0.8213	0.8047	0.6920	49.4520	0.9556	73.0955	0.8885	93.6617	0.9751	0.2970
6	17.6587	0.9456	0.2947	0.8408	32.9570	0.9215	73.3700	0.9876	73.4030	0.9567	0.2761
7	23.8869	0.9073	0.3038	0.9612	40.5374	0.9478	73.7973	0.8028	98.7855	0.9294	0.2273
8	26.6136	0.9607	0.2494	0.7509	42.4097	0.9306	68.7520	0.8227	78.6048	0.9209	0.2866
CT	20.5049	0.9225	0.6274	0.8867	38.3798	0.9722	76.5501	0.9759	86.9574	0.9399	0.2454

CT = central treatment.