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. 2010 May 4;11(2):729–742. doi: 10.1208/s12249-010-9435-7

Table III.

Release Kinetics and Parameters of the Beads (Data Represents Mean ± SD (N = 3))

Variables Values SQRT (R 2) Zero order (R 2) Time (h)i
T 75 T 50 T 25
Cross-linking agent Zn 0.980 0.997 3.48 ± 0.21a 6.37 ± 0.20a 9.26 ± 0.27a
Ca 0.972j 0.923 2.18 ± 0.17 4.27 ± 0.15 7.04 ± 0.08
Cross-linking pH 1.5 0.980 0.997 3.48 ± 0.21b 6.37 ± 0.20b 9.26 ± 0.27b
6.3 0.989j 0.942 1.62 ± 0.02 3.16 ± 0.02 5.23 ± 0.03
Zinc acetate concentration (%) 1 0.992j 0.982 1.23 ± 0.23c 3.30 ± 0.24c 6.38 ± 0.18c
2.5 0.986 0.995 2.82 ± 0.36 5.29 ± 0.34d 7.75 ± 0.31d
5 0.980 0.997 3.48 ± 0.21 6.37 ± 0.20 9.26 ± 0.27
10 0.976 0.998 3.46 ± 0.42 6.31 ± 0.47 9.16 ± 0.52
Cross-linking time (h) 0.25 0.989 0.990 1.96 ± 0.41e 4.80 ± 0.27e 7.64 ± 0.18e
0.5 0.980 0.997 3.48 ± 0.21 6.37 ± 0.20 9.26 ± 0.27
2 0.964 0.995 3.51 ± 0.33 6.52 ± 0.22 9.53 ± 0.36
24 0.974 0.988 3.41 ± 0.28 6.41 ± 0.23 9.41 ± 0.19
Drying RT 0.980 0.997 3.48 ± 0.21 6.37 ± 0.20 9.26 ± 0.27
37°C 0.979 0.998 3.47 ± 0.13 6.33 ± 0.03 9.20 ± 0.18
50°C 0.975 0.992 3.53 ± 0.11 6.41 ± 0.19 9.28 ± 0.27
FD 0.913k 0.821k
Pectin concentration (%) 3 0.988 0.992 2.82 ± 0.42f 5.70 ± 0.32 8.58 ± 0.22
4 0.986 0.987 3.00 ± 0.19 5.95 ± 0.35 8.90 ± 0.52
5 0.980 0.997 3.48 ± 0.21 6.37 ± 0.20 9.26 ± 0.27
6 0.971 0.998 3.51 ± 0.09 6.39 ± 0.18 9.27 ± 0.35
Pectin-Resveratrol 1:1 0.994j 0.972 1.95 ± 0.27g 3.94 ± 0.27g 6.63 ± 0.21g
2:1 0.979 0.996 2.61 ± 0.08 5.33 ± 0.11 8.05 ± 0.16
3:1 0.980 0.997 3.48 ± 0.21 6.37 ± 0.20 9.26 ± 0.27
4:1 0.982 0.994 4.10 ± 0.14 7.43 ± 0.21 10.76 ± 0.29
Enzyme 0.994j 0.967 2.02 ± 0.23h 4.20 ± 0.28h 7.17 ± 0.31h

a p < 0.05 between cross-linking agent Zn and Ca

b p < 0.05 between cross-linking pH 1.5 and 6.3

c p < 0.05 between zinc acetate concentration 1% with 2.5%, 5%, and 10%

d p < 0.05 between zinc acetate concentration 2.5% with 5% and 10%

e p < 0.05 between cross-linking time 0.25 h with 0.5, 2, and 24 h

f p < 0.05 between pectin concentration 3% and 6%

g p < 0.05 among pectin to resveratrol ratio 1:1, 2:1, 3:1, and 4:1

h p < 0.05 between enzyme and nonenzyme treatment

iData represents mean ± SD

jRelease data more appropriately fit with square root of time equation

kRelease data does not fit with both equations