Table 2.
α-Amylase activity in selected strains.
| Strain | α-Amylase Activity * (U/mL) | |
|---|---|---|
| Supernatant | Cell Extracts | |
| AmyA+ (PBL2025) | 0.23 ± 0.01 | 0.13 ± 0.02 |
| malAp::amyA (PBL2058) | 0.16 ± 0.01 | 0.18 ± 0.01 |
| malAp::amyA G877 to STOP (PBL2059) | 0.17 ± 0.01 | 0.03 ± 0.01 |
| malAp::amyA K898 to STOP (PBL2065) | 0.15 ± 0.01 | 0.02 ± 0.01 |
| malAp::amyA Δ I2 to C31 (PBL2064) | <0.01 | 0.01 |
| AmyA− (PBL2004) | 0.02 ± 0.03 | 0.02 ± 0.06 |
* One unit of activity equals 1µg of starch hydrolyzed per min per mL of sample. Samples were analyzed at cell densities of 109/mL.