Table 1.
Extract fractionc | Fraction dilutionc | |||
---|---|---|---|---|
1 × 100 | 1 × 10−1 | 1 × 10−2 | 1 × 10−3 | |
TA98 | ||||
RA (R f = 0.0–0.29) | 170 ± 13 | 296 ± 24 | 267 ± 13 | 333 ± 18 |
RB (R f = 0.29–0.69) | 117 ± 10 | 271 ± 18 | 338 ± 27 | 350 ± 31 |
RC (R f = 0.69–1.0) | 215 ± 7 | 387 ± 23 | 299 ± 21 | 453 ± 33 |
| ||||
TA100 | ||||
RA (R f = 0.0–0.29) | 71 ± 16 | 203 ± 12 | 567 ± 35 | 621 ± 53 |
RB (R f = 0.29–0.69) | 127 ± 3 | 361 ± 39 | 534 ± 37 | 567 ± 24 |
RC (R f = 0.69–1.0) | 185 ± 15 | 565 ± 43 | 523 ± 48 | 536 ± 30 |
aAFB1 (used as positive control) tested at 100, 500, and 1000 ng/plate induced 195 ± 23, 495 ± 29, and 676 ± 55 and 200 ± 16, 595 ± 43, and 745 ± 24 revertants/plate for TA98 and TA100, respectively. Spontaneous revertants were 55 ± 7 and 113 ± 19 for TA98 and TA100, respectively.
bValues are means of three replicates ± SEM.
cExtracts were diluted and spiked with enough toxin to yield 500 ng of pure AFB1/plate.