Odour intensity | |||||
---|---|---|---|---|---|
Treatment | H2S (nmol/l) | MES (nmol/l) | DMS (nmol/l) | Judge 1 | Judge 2 |
None | 1365 (566 | 445 (111) | 80.1 (13.5) | 4.1 (0.7) | 6.5 (0.5) |
Activated charcoal | 4.5 (1.8) | 1.8 (0.5) | 0.9 (0.5) | 0.1 (0.1) | 0.4 (0.1) |
p = 0.03 | p = 0.001 | p > 0.001 | p > 0.001 | p = 0.001 | |
None | 526 (144) | 189 (38.2) | 29.3 (3.6) | 2.5 (0.5) | 5.8 (0.5) |
Zinc acetate | 17.1 (4.9) | 16.7 (4.1) | 18.5 (3.15) | 0.7 (0.2) | 3.4 (0.6) |
p = 0.01 | p > 0.001 | p = 0.04 | p = 0.004 | p = 0.007 |
Data were analysed using analysis of variance (ANOVA) and are expressed as mean (SEM). N = 9 and 16 flatus passages for charcoal treatment and zinc acetate respectively.
Odour intensity was rated on a linear scale ranging from 0 (no odour) to 8 (very offensive).
MES, methanethiol; DMS, dimethyl sulphide.