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Table 2 Growth, MVOC emissions and mycotoxin production by Stachybotrys chartarum growing on ceiling tile

From: Microbial volatile organic compound emissions from Stachybotrys chartarumgrowing on gypsum wallboard and ceiling tile

Stachybotrys chartarumstrain

Substratea

Incubation period

Anisole concentration

3-octanone concentration

Mycotoxin concentration

CFU log10

(Days)

(μg/m3)

(μg/m3)

(ppb)

Mean ± SD

Mean ± SDb(n)c

Mean ± SD (n)

ATCC 201210

C

Start

0.15 (2)

BDLe

NDd

ND

  

7 d

12.91 ± 3.29 (2)

BDL

ND

ND

  

14 d

6.51 ± 0.26 (2)

BDL

ND

ND

  

21 d

3.86 ± 0.05 (2)

BDL

ND

ND

ATCC 62762

C

Start

1.45 ± 0.35 (2)

2.77 ± 0.45 (2)

< 0.2

TFTC

  

7 d

13.97 ± 2.50 (2)

8.68 ± 0.42 (2)

18

8.07 ± 7.55

  

14 d

5.94 ± 0.47 (2)

2.02 ± 0.59 (2)

18

8.07 ± 7.55

  

21 d

7.33 ± 0.21 (2)

1.49 ± 0.36 (2)

> 18

8.95 ± 8.74

ATCC 34916

C

Start

0.28 ± 0.01 (2)

0.40 ± 0.09 (2)

< 0.2

TFTC

  

7 d

46.41 ± 1.25 (2)

1.32 ± 0.41 (2)

> 18

9.9 ± 9.19

  

14 d

5.78 ± 0.53 (2)

1.42 ± 0.06 (2)

> 18

9.54 ± 9.05

  

21 d

3.09 ± 0.37 (2)

1.73 ± 0.66 (2)

> 18

9.66 ± 9.22

  

28 d

2.08 ± 0.14 (2)

3.56 ± 0.10 (2)

18

8.02 ± 8.00

ATCC 46994

C

Start

2.28 ± 0.02 (2)

1.57 ± 0.55 (2)

< 0.2

5.76 ± 5.91

  

7 d

11.64 (1)

1.69 (1)

2.0

9.67 ± 9.11

  

14 d

3.98 ± 0.08 (2)

2.64 ± 0.56 (2)

0.2 < x < 2.0

9.67 ± 9.26

  

21 d

2.6 ± 0.2 (2)

15.76 ± 0.52 (2)

0.2 < x < 2.0

9.98 ± 9.52

  

28 d

1.87 ± 0.16 (2)

42.18 ± 0.97 (2)

2.0

10.07 ± 9.38

RTI 3559

C

Start

0.22 ± 0.08 (2)

BDL

ND

ND

  

7 d

13.12 ± 0.44 (2)

3.56 ± 0.96 (2)

ND

ND

  

14 d

4.13 ± 0.33 (2)

BDL

ND

ND

  

21 d

1.95 ± 0.21 (2)

BDL

ND

ND

RTI 5802

C

Start

0.23 ± 0.05 (2)

3.27 ± 1.22 (2)

< 0.2

TFTC

  

7 d

13.10 ± 3.05 (2)

10.07 ± 0.93 (2)

2.0

9.06 ± 8.77

  

14 d

4.19 ± 0.58 (2)

3.72 ± 0.64 (2)

0.2 < x < 2.0

9.06 ± 8.77

  

21 d

7.48 ± 0.75 (2)

3.53 ± 0.70 (2)

2.0

9.53 ± 9.16

  1. aC, ceiling tile; bSD, standard deviation; cn, number of chambers with same strain, tested during same incubation period; dND, not determined; eBDL, below detection limit.