Table 8.

Volatile fraction composition of hemp seed flour.

Volatile Compounds	LRI 1	Percentage 2	Volatile Compounds	LRI 1	Percentage 2
Acids			Esters
Acetic acid	1450	3.30 ± 0.29	Ethyl acetate	883	0.33 ± 0.02
Propanoic acid	1536	0.11 ± 0.00	Propyl acetate	971	0.15 ± 0.01
3-Methylbutanoic acid	1666	0.35 ± 0.02	3-Methylbutyl acetate	1117	0.30 ± 0.02
Pentanoic acid	1733	0.21 ± 0.02	Hexyl acetate	1266	0.07 ± 0.00
(E)-2-Butenoic acid	1772	0.19 ± 0.01	γ-Butyrolactone	1629	0.41 ± 0.03
Hexanoic acid	1839	2.52 ± 0.19	γ-Hexalactone	1699	0.40 ± 0.03
Heptanoic acid	1945	0.12 ± 0.00	γ-Nonalactone	2020	0.12 ± 0.01
Octanoic acid	2051	0.19 ± 0.01	All		1.78 ± 0.05
Nonanoic acid	2156	0.28 ± 0.01	Ketones
2-Octenoic acid	2175	0.12 ± 0.00	Acetone	811	0.44 ± 0.03
Decanoic acid	2262	0.20 ± 0.01	2-Butanone	900	0.38 ± 0.02
All		7.59 ± 0.35	Heptan-2-one	1178	2.88 ± 0.19
Aldehydes			3-Octanone	1249	0.36 ± 0.02
2-Methylbutanal	911	1.50 ± 0.10	2-Octanone	1281	1.48 ± 0.09
3-Methylbutanal	915	5.94 ± 0.32	2-Methyl-1-hepten-6-one	1328	0.11 ± 0.00
Pentanal	976	2.24 ± 0.12	6-Methyl-5-hepten-2-one	1333	0.29 ± 0.01
Hexanal	1078	10.67 ± 0.96	3-Octen-2-one	1405	0.35 ± 0.02
2-Methyl-2-butenal	1094	0.17 ± 0.01	3,5-Octadien-2-one	1516	0.38 ± 0.02
Heptanal	1182	0.21 ± 0.02	All		6.68 ± 0.22
(E)-2-Hexenal	1217	0.59 ± 0.04	Terpenoids
Octanal	1286	0.08 ± 0.00	α-Pinene	1014	1.50 ± 0.08
(Z)-2-Heptenal	1323	1.47 ± 0.09	Camphene	1058	0.12 ± 0.01
(E)-2-Octenal	1427	0.30 ± 0.02	β-Pinene	1103	0.42 ± 0.03
(E,E)-2,4-Heptadienal	1492	0.47 ± 0.02	3-Carene	1144	0.68 ± 0.04
Benzaldehyde	1523	1.30 ± 0.09	β-Myrcene	1157	0.41 ± 0.03
(E)-2-Nonenal	1532	0.50 ± 0.02	Eucalyptol	1206	0.26 ± 0.02
All		25.45 ± 1.03	p-Cymene	1268	0.37 ± 0.02
Alcohols			p-Cymenene	1435	0.46 ± 0.03
2-Methyl-1-propanol	1082	1.69 ± 0.10	Linalool	1539	0.08 ± 0.00
2-Pentanol	1110	0.10 ± 0.00	(Z)-Pinocamphone	1543	0.15 ± 0.01
1-Butanol	1133	0.23 ± 0.01	Fenchyl alcohol	1576	0.12 ± 0.01
1-Penten-3-ol	1149	0.87 ± 0.06	(E)-α-Bergamotene	1580	0.27 ± 0.02
3-Methyl-1-butanol	1198	10.11 ± 0.99	Caryophyllene	1592	2.00 ± 0.11
1-Pentanol	1239	1.81 ± 0.11	Terpinen-4-ol	1596	0.10 ± 0.00
(Z)-2-Penten-1-ol	1305	0.08 ± 0.00	(E)-Pinocarveol	1648	0.19 ± 0.02
2-Heptanol	1309	0.52 ± 0.03	(E)-β-Farnesene	1658	0.13 ± 0.00
(E)-2-Penten-1-ol	1312	0.07 ± 0.00	α-Humulene	1663	0.56 ± 0.03
1-Hexanol	1343	9.98 ± 0.75	Neral	1680	0.92 ± 0.06
(Z)-2-Hexen-1-ol	1399	0.05 ± 0.00	α-Terpineol	1689	0.09 ± 0.00
2-Octanol	1410	0.12 ± 0.00	endo-Borneol	1693	0.06 ± 0.00
1-Octen-3-ol	1440	0.55 ± 0.03	β-Selinene	1711	0.17 ± 0.01
1-Heptanol	1446	0.29 ± 0.01	α-Selinene	1717	0.07 ± 0.00
(Z)-2-Octen-1-ol	1608	0.13 ± 0.01	Caryophyllene oxide	1971	0.17 ± 0.01
1-Nonanol	1651	0.06 ± 0.00	All		9.30 ± 0.17
Benzyl alcohol	1869	0.05 ± 0.00	Nitriles
Phenyl ethyl alcohol	1903	0.12 ± 0.00	Hexanenitrile	1298	0.60 ± 0.03
1-Dodecanol	1956	0.08 ± 0.00	All		0.60 ± 0.03
1-Tetradecanol	2160	0.13 ± 0.01	Furanic compounds
All		27.05 ± 1.39	2-Methylfuran	864	0.59 ± 0.04
Hydrocarbons			2-Ethylfuran	950	4.13 ± 0.29
3-Methylnonane	957	0.22 ± 0.01	2-Propylfuran	1027	0.35 ± 0.02
Decane	991	0.93 ± 0.06	2- Butylfuran	1128	1.12 ± 0.09
Dodecane	1190	0.55 ± 0.03	2-Pentylfuran	1226	13.34 ± 1.01
Tridecane	1290	0.32 ± 0.02	All		19.53 ± 1.06
All		2.02 ± 0.07

¹ Linear retention indexes calculated according to the Van Den Dool and Kratz equation; ² percentage of peak area in TIC chromatogram.