Table 1.
Effect of variation in processing parameters on encapsulation efficiency and recovery of acacia tannin extract in starch and maltodextrin-gum arabic microparticles
| Sample1) | Wall material (g/100 g solution) | Core material (g/100 g wall material) | Surface tannin (g/100 g) | Total tannin recovery (g/100 g) | Encapsulation efficiency (g/100 g) | ||
|---|---|---|---|---|---|---|---|
|
| |||||||
| GA | MD | NS | |||||
| MG-TE25 | 30 | 45 | - | 25 | 8.43d | 70.7ab | 64.8a |
| MG-TE30 | 28 | 42 | - | 30 | 10.7d | 66.4ab | 60.5ab |
| MG-TE35 | 26 | 39 | - | 35 | 11.2d | 63.2b | 56.1b |
| S-TE15 | - | - | 85 | 15 | 35.0c | 75.1a | 48.8c |
| S-TE20 | - | - | 80 | 20 | 53.4b | 70.9ab | 33.4d |
| S-TE25 | - | - | 75 | 25 | 63.9a | 75.6a | 27.7d |
| S-TE30 | - | - | 70 | 30 | 58.8ab | 75.8a | 31.1d |
| SEM | - | - | - | - | 4.21 | 1.30 | 2.67 |
| p-value | - | - | - | - | <0.0001 | 0.03 | <0.0001 |
GA, gum arabic; MD, maltodextrin; NS, native starch; SEM, standard error of mean.
1)
MG-TE, maltodextrin+gum arabic encapsulating acacia tannin extract (at 25%, 30%, 35% w/w); S-TE, native starch encapsulating acacia tannin extract (at 15%, 20%, 25%, 30% w/w).
a–d
Means with different superscripts across a column are significantly different (p<0.05); treatments are expressed as mean and values are calculated from a minimum of four repeat batches.