Table 1.
Gelation behaviors of 2C12-Lys-Na, 2C12-Lys-K, 2C14-Lys-Na, and 2C14-Lys-K in alcohol–water mixtures with different volume ratios (v/v).
| Solvents | Volume Ratio (v/v) | 2C12-Lys-Na | 2C14-Lys-Na | 2C12-Lys-K | 2C14-Lys-K |
|---|---|---|---|---|---|
| methanol–H2O | 3:1 | 46 (23) | 56 (26) | S | 33.9 (29) |
| 2:2 | 8 (19) | 8.2 (24) | S | 13.1 (27) | |
| 1.5:2.5 | 3.5 (17) | 6.4 (20) | 57.8 (25) | 10.3 (26) | |
| 1:3 | 5 (18) | 7.9 (21) | 24.5 (26) | 15.4 (25) | |
| 0.5:3.5 | 7.5 (19) | 18.6 (21) | 17.5 (23) | 35 (25) | |
| ethanol–H2O | 3:1 | S | S | S | 22 (26) |
| 2:2 | 24.5 (20) | 4.4 (24) | S | 14 (23) | |
| 1.5:2.5 | 2 (17) | 2 (19) | S | 5.6 (22) | |
| 1:3 | 5 (18) | 9 (20) | 5 | 7.8 (21) | |
| 0.5:3.5 | 6 (18) | 22.4 (20) | 3.6 | 13.1 (21) | |
| isopropanol–H2O | 3:1 | S | S | S | S |
| 2:2 | S | S | S | S | |
| 1.5:2.5 | S | 16.4 (21) | S | 33.4 (26) | |
| 1:3 | 29.5 (22) | 15.2 (21) | S | 51.7 (26) | |
| 0.5:3.5 | 11 (19) | 8 (20) | 31 | 15 (25) | |
| t-butanol–H2O | 3:1 | S | S | S | S |
| 2:2 | S | S | S | S | |
| 1.5:2.5 | S | S | S | S | |
| 1:3 | S | 8.8 (22) | S | S | |
| 0.5:3.5 | S | 13 (23) | S | 34.6 (26) | |
| 0.1:3.9 | 22.5 (23) | 12.3 (21) | 33.1 | 18.1 (23) |
Notes: Values denote minimum gel concentration (MGC, mg/mL); S denotes solution; data in parentheses indicate gelation time (min).