Table 1 Summary of headspace volatiles emitted (in ng h⁻¹ g⁻¹ grain) from grain that was uninoculated (P. ctrl), surface sanitized with UV-radiation for 10-min (UV-grain), or inoculated with A. flavus or Fusarium spp. for periods of 3 h using a push headspace collection system.

From: Attraction, mobility, and preference by Lasioderma serricorne (Coleoptera: Ptinidae) to microbially-mediated volatile emissions by two species of fungi in stored grain

Compound	RT	P. ctrl		UV-grain		A. flavus-grain		Fusarium-grain
Compound	RT	Mean ± SE	% of Total	Mean ± SE	% of Total	Mean ± SE	% of Total	Mean ± SE	% of Total
4-Ethylbenzamide	4.26	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.17 ± 0.11	6
cis-1-Butyl-2-methylcyclopropane	4.38	0.10 ± 0.06	18	0.03 ± 0.01	4	0.04 ± 0.02	6	0.01 ± 0.02	0
3-Octene, (E)^a	4.38	0.00 ± 0.00	0	0.02 ± 0.01	3	0.02 ± 0.02	3	0.00 ± 0.00	0
4-Heptanone^a	4.45	0.01 ± 0.01	2	0.02 ± 0.01	2	0.01 ± 0.01	2	0.03 ± 0.04	1
Octane^a	4.46	0.00 ± 0.00	0	0.00 ± 0.00	0	0.02 ± 0.03	3	0.05 ± 0.07	2
2,4-Dimethyl-1-heptene	4.91	0.01 ± 0.01	3	0.05 ± 0.02	7	0.02 ± 0.02	4	0.03 ± 0.03	1
2-Pentanone, 4-hydroxy-4-methyl	4.92	0.03 ± 0.02	6	0.05 ± 0.04	6	0.03 ± 0.04	5	0.00 ± 0.00	0
3-Hexanone, 2-methyl^a	5.26	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.03 ± 0.04	1
Pyrazole-1-methanol	5.63	0.00 ± 0.00	0	0.03 ± 0.02	3	0.01 ± 0.01	1	0.00 ± 0.00	0
Mesitylene^a	6.62	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.06 ± 0.07	2
Pentane, 2,2,3,3-tetramethyl	7.09	0.03 ± 0.01	6	0.06 ± 0.02	8	0.02 ± 0.02	4	0.04 ± 0.03	1
Octane, 3,4,5,6-tetramethyl	7.15	0.04 ± 0.01	7	0.03 ± 0.01	4	0.05 ± 0.03	9	0.13 ± 0.13	4
Hexanoic acid, 2-ethyl-, methyl ester	7.57	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.12 ± 0.06	4
Ether, hexyl pentyl	7.89	0.00 ± 0.00	0	0.01 ± 0.01	1	0.01 ± 0.01	1	0.00 ± 0.00	0
3-Hydroxy-3-methylvaleric acid	7.89	0.01 ± 0.01	2	0.00 ± 0.00	0	0.00 ± 0.00	0	0.06 ± 0.05	2
Benzene, 1,4-diethyl	7.89	0.00 ± 0.00	0	0.01 ± 0.01	2	0.00 ± 0.00	0	0.00 ± 0.00	0
Phenol, 3,4,5-trimethyl	8.13	0.00 ± 0.00	0	0.01 ± 0.01	2	0.01 ± 0.01	1	0.15 ± 0.05	5
Ethanol, 2-(octyloxy)	8.14	0.01 ± 0.01	1	0.00 ± 0.00	0	0.01 ± 0.01	1	0.00 ± 0.00	0
1-Undecene, 7-methyl^a	8.20	0.00 ± 0.00	0	0.01 ± 0.01	1	0.02 ± 0.01	3	0.00 ± 0.00	0
1-Dodecanol^a	8.21	0.00 ± 0.00	0	0.01 ± 0.01	1	0.01 ± 0.01	2	0.00 ± 0.00	0
Undecane^a	8.41	0.04 ± 0.03	7	0.03 ± 0.03	4	0.02 ± 0.03	3	0.01 ± 0.01	0
Nonanal^a	8.51	0.06 ± 0.04	11	0.06 ± 0.05	7	0.03 ± 0.03	5	0.00 ± 0.00	0
Cyclopropanecarboxylic acid	8.52	0.00 ± 0.00	0	0.00 ± 0.00	0	0.02 ± 0.03	3	0.25 ± 0.26	8
5-Methylthiopyridin-2-ol	9.17	0.04 ± 0.03	8	0.03 ± 0.02	4	0.00 ± 0.00	0	0.03 ± 0.04	1
1-Hexanol, 5-methyl-2-(1-methylethyl)	10.54	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.01	1	0.00 ± 0.00	0
4-Phenyl-2-butanol^a	10.65	0.00 ± 0.00	0	0.03 ± 0.03	3	0.00 ± 0.00	0	0.00 ± 0.00	0
Benzene, 1,3-bis(1,1-dimethylethyl)-	10.78	0.09 ± 0.03	16	0.16 ± 0.05	20	0.13 ± 0.04	22	0.11 ± 0.06	4
Ethanone, 1-(4-ethylphenyl)-	10.96	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0
Butanoic acid, 2-(1-Propenyl)-6-methylphenol-	11.04	0.00 ± 0.00	0	0.00 ± 0.00	0	0.02 ± 0.02	4	0.00 ± 0.00	0
m-Ethylacetophenone-^a	11.25	0.00 ± 0.00	0	0.08 ± 0.07	10	0.00 ± 0.00	0	0.00 ± 0.00	0
2,3,6-Trimethylhept-3-en-1-ol -	11.54	0.00 ± 0.00	0	0.00 ± 0.00	0	0.01 ± 0.01	2	0.00 ± 0.00	0
Ketone, methyl 2,2,3-trimethylcyclopentyl	11.66	0.00 ± 0.00	0	0.00 ± 0.00	1	0.01 ± 0.01	1	0.00 ± 0.00	0
Dodecane, 4-methyl-	11.67	0.02 ± 0.01	3	0.00 ± 0.00	0	0.01 ± 0.01	2	0.00 ± 0.00	0
Benzene, 4-ethyl-1,2-dimethoxy-	11.68	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.49 ± 0.31	16
.alpha.-Cubebene	13.22	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.08 ± 0.05	3
Germacrene D	13.37	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.16 ± 0.08	5
(1R,4S,5S)-1,8-Dimethyl-4-(prop-1-en-2-yl)spiro[4.5]dec-7-ene	13.82	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.40 ± 0.15	13
Di-epi-.alpha.-cedrene	15.89	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.35 ± 0.17	12
Benzimidazole, 2-ethyl-1-propyl-	18.42	0.00 ± 0.00	0	0.00 ± 0.00	0	0.00 ± 0.00	0	0.03 ± 0.02	1
Hexanedioic acid, bis(2-ethylhexyl) ester	23.11	0.04 ± 0.04	7	0.03 ± 0.03	4	0.03 ± 0.05	5	0.11 ± 0.12	4
Total emissions (ng per h per g grain)		0.6 ± 0.01	100	0.8 ± 0.01	100	0.58 ± 0.01	100	3.0 ± 0.05	100

There were n = 7 replicates per treatment, and mean emission rates per compound are portrayed.
^aCompound identity confirmed by co-injecting technical standard onto same column.

Back to article page

Table 1 Summary of headspace volatiles emitted (in ng h⁻¹ g⁻¹ grain) from grain that was uninoculated (P. ctrl), surface sanitized with UV-radiation for 10-min (UV-grain), or inoculated with A. flavus or Fusarium spp. for periods of 3 h using a push headspace collection system.

Search

Quick links