Table 1.
Growth, MVOC emissions and mycotoxin production by Stachybotrys chartarum growing on gypsum wallboard
| Stachybotrys chartarum strain | Substrate a |
Incubation period |
Anisole concentration |
3-octanone concentration |
Mycotoxin concentration |
CFU log
10
|
|---|---|---|---|---|---|---|
| (Days) |
(μg/m
3
) |
(μg/m
3
) |
(ppb) | Mean ± SD | ||
| Mean ± SD b (n) c | Mean ± SD (n) | |||||
| ATCC 201210 |
W |
Start |
0.25 ± 0.05 (2) |
3.18 ± 0.88 (2) |
NDd |
6.38 ± 6.44 |
| |
|
7 d |
65.92 ± 22.87 (2) |
1.36 (1) |
ND |
9.34 ± 8.99 |
| |
|
14 d |
14.71 ± 7.27 (2) |
1.59 ± 0.58 (2) |
ND |
9.96 ± 9.09 |
| ATCC 62762 |
W |
Start |
0.12 ± 0.02 (2) |
0.20 ± 0.02 (2) |
0.2 |
6.1 ± 5.91 |
| |
|
7 d |
50.1 ± 5.35 (2) |
1.43 ± 0.24 (2) |
< 0.2 |
6.59 ± 6.03 |
| |
|
14 d |
12.26 ± 0.78 (2) |
1.75 ± 0.11 (2) |
0.2 |
7.31 ± 6.83 |
| |
|
21 d |
5.10 ± 0.18 (2) |
1.34 ± 0.11 (2) |
2.0 |
6.90 ± 6.56 |
| |
|
28 d |
2.52 (1) |
0.46 (1) |
> 18 |
8.25 ± 7.45 |
| ATCC 34916 |
W |
start |
0.34 ± 0.12 (2) |
BDLe |
< 0.2 |
TFTC |
| |
|
7 d |
57.85 ± 5.03 (2) |
1.83 ± 0.80 (2) |
> 18 |
9.45 ± 8.48 |
| |
|
14 d |
13.10 ± 0.21 (2) |
2.31 ± 0.65 (2) |
> 18 |
9.94 ± 9.31 |
| |
|
21 d |
6.57 ± 0.08 (2) |
2.23 ± 0.56 (2) |
> 18 |
10.45 ± 9.95 |
| |
|
28 d |
3.75 (1) |
0.54 (1) |
> 18 |
9.9 ± 9.19 |
| ATCC 208877 |
W |
Start |
0.62 ± 0.09 (3) |
1.44 ± 0.19 (2) |
< 0.2 |
5 |
| |
|
7 d |
105.19 ± 37.96 (3) |
4.37 ± 0.71 (2) |
0.2 < x < 2.0 |
7.99 ± 7.40 |
| |
|
14 d |
36.58 ± 10.44 (2) |
2.52 ± 0.45 (2) |
18 |
9.55 ± 8.9 |
| |
|
21 d |
18.72 (1) |
2.45 (1) |
2.0 < x < 18 |
9.49 ± 9.06 |
| ATCC 46994 |
W |
Start |
0.75 ± 0.05 (2) |
0.28 (1) |
< 0.2 |
TFTC |
| |
|
7 d |
46.37 ± 6.78 (2) |
2.16 ± 0.06 (2) |
0.2 |
8.86 ± 8.83 |
| |
|
14 d |
11.60 ± 2.31 (2) |
4.16 ± 0.79 (2) |
0.2 < x < 2.0 |
9.78 ± 9.30 |
| |
|
21 d |
6.25 ± 0.76 (2) |
3.77 ± 0.65 (2) |
0.2 < x < 2.0 |
10.10 ± 9.52 |
| |
|
28 d |
4.56 (1) |
6.16 (1) |
0.2 < x < 2.0 |
10.47 ± 9.32 |
| RTI 3559 |
W |
Start |
0.15 ± 0.03 (2) |
0.26 ±0.15 (2) |
0.2 |
6.22 ± 5.61 |
| |
|
7 d |
48.15 ± 7.39 (2) |
0.94 (1) |
18 |
8.96 ± 9.07 |
| |
|
14 d |
9.64 (1) |
0.13 (1) |
18 |
10.36 ± 9.64 |
| |
|
21 d |
4.89 ± 0.64 (2) |
0.71 ± 0.04 (2) |
18 |
10.29 ± 9.82 |
| |
|
28 d |
3.16 (1) |
0.94 (1) |
> 18 |
9.27 ± 8.36 |
| RTI 5802 |
W |
Start |
0.58 ± 0.11 (3) |
2.22 ± 1.60 (2) |
< 0.2 |
5.22 ± 4.76 |
| |
|
7 d |
61.74 ± 12.72 (3) |
1.71 ± 0.23 (2) |
0.2 |
8.5 ± 7.53 |
| |
|
14 d |
39.32 ± 17.57 (2) |
1.40 ± 1.73 (2) |
0.2 |
9.34 ± 8.99 |
| 21 d | 17.38 (1) | 3.18 (1) | 2.0 | 10.45 ± 9.40 |
aW, gypsum wallboard; bSD, standard deviation; cn, number of chambers with same strain, tested during same incubation period; dND, not determined; eBDL, below detection limit.