Table 3.

Correlation coefficients between microbial metabolites and other microbial indices in dust

Metabolite	Total fungi (n=28)	Glucan (n=27)	Total Penicillium (n=28)	Total Aspergillus (n=21)	Total bacteria (n=28)	Endotoxin (n=27)	Gram negative (n=16)	Gram positive (n=23)
Averufin	0.60**	0.43**	0.54**	0.29	0.51**	0.35*	0.37	0.53**
3-nitropropionic acid	−0.34*	0.24	−0.23	−0.26	−0.09	0.12	−0.29	−0.25
Neoechinulin A	0.61**	0.14	0.57**	0.22	−0.11	0.03	−0.17	0.10
Asperglaucide	0.78**	0.26	0.54**	0.58**	0.35*	0.39**	0.33	0.55**
Brevianamide F	0.10	0.33*	0.03	0.16	0.08	0.48**	−0.31	−0.11
Skyrin	0.27	0.54**	0.15	0.15	0.37*	0.49**	0.11	0.25
Citreorosein	−0.17	0.25	−0.13	−0.17	−0.05	0.16	−0.49*	−0.16
Emodin	0.25	0.36*	0.26	0.07	0.02	0.27	−0.09	−0.18
Alternariol MME	0.06	0.37*	−0.12	−0.03	0.37*	0.32	0.39	0.29
Integracin A	0.30	−0.01	0.30	0.18	0.31	−0.01	0.08	0.34
Integracin B	0.30	0.25	0.24	0.05	0.39**	0.22	0.28	0.37*
Usnic acid	0.10	0.34*	0.01	0.11	0.14	0.32*	0.27	0.09
Rugulusovin	0.18	0.22	−0.04	0.34	0.24	0.38*	0.18	0.10
Lotaustralin	−0.05	0.52**	−0.03	0.02	−0.31	0.08	−0.12	−0.34
Cyclo(L-Pro-L-Tyr)	−0.02	0.22	−0.09	0.05	0.14	0.50**	−0.27	−0.13
Linamarin	−0.21	0.17	−0.11	−0.22	−0.14	−0.03	−0.22	−0.19

Only presented are metabolites of which prevalence is greater than 20% among 28 samples.

^*0.05<p-value<0.1;

^**p-value<0.05