1. Odor-Active Compounds Identified in Aroma Distillates Isolated from Different Hemp Cultivars during AEDA.
| retention index on |
FD factor
|
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|---|---|---|---|---|---|---|---|---|---|---|---|
| no. | odorant | odor quality | FFAP | DB-5 | PG071 | PG072 | PG073 | PG074 | PG075.1 | PG076 | ref. |
| 1 | ethyl propanoate | fruity, flue-like | 943 | 712 | 64 | 16 | 64 | 32 | 128 | 32 | |
| 2 | α-pinene | pine-like | 1003 | 930 | 1024 | 1024 | 1024 | 1024 | 1024 | 1024 | |
| 3 | methyl 3-methylbutanoate | fruity | 1012 | 764 | 128 | 256 | 1024 | ||||
| 4 | ethyl 2-methylbutanoate | fruity | 1023 | 847 | 1024 | 256 | 64 | 128 | 1024 | 1024 | |
| 5 | ethyl 3-methylbutanoate | fruity | 1053 | 851 | 1024 | 1024 | 1024 | 1024 | 1024 | ||
| 6 | 3-methylbut-2-ene-1-thiol | hemp, beer | 1085 | 816 | 64 | 32 | 16 | 256 | 256 | 1024 | |
| 7 | β-pinene | terpene-like | 1092 | 978 | 64 | 32 | 64 | 8 | 256 | 1024 | |
| 8 | myrcene | hop-like | 1151 | 991 | 1024 | 1024 | 1024 | 512 | 1024 | 256 | |
| 9 | 1,8-cineole (eucalyptol) | eucalyptus-like | 1165 | 1038 | 64 | 256 | 16 | 4 | 16 | 512 | |
| 10 | limonene | citrus-like | 1190 | 1033 | 256 | 1024 | 16 | 128 | 16 | 512 | |
| 11 | β-phellandrene | terpene-like | 1234 | 1035 | 16 | 4 | |||||
| 12 | unknown | mushroom | 1241 | 1063 | 32 | 4 | |||||
| 13 | 3-methylbutyl 2-methylbutanoate | fruity | 1267 | 1100 | 16 | ||||||
| 14 | octanal | fruity, citrus-like | 1281 | 941 | 32 | ||||||
| 15 | 2-acetyl-1-pyrroline | popcorn-like, | 1322 | 920 | 64 | 32 | 64 | 32 | |||
| roasty | |||||||||||
| 16 | 4-methyl-4-sulfanylpentan-2-one | sulfury, exotic | 1370 | 934 | 16 | 1024 | 256 | 64 | 256 | 32 | |
| 17 | 3-methoxy-2,5-dimethylpyrazine | earthy | 1414 | 1054 | 512 | 256 | 16 | 128 | |||
| 18 | acetic acid | vinegar-like | 1442 | 625 | 64 | 32 | 16 | 128 | 8 | 4 | |
| 19 | 3-(methylsulfanyl)propanal (methional) | cooked potato | 1453 | 899 | 64 | 256 | 16 | 16 | 64 | 64 | |
| 20 | 3-isobutyl-2-methoxypyrazine | earthy, bell | 1511 | 1179 | 32 | 16 | 128 | ||||
| pepper-like | |||||||||||
| 21 | linalool | citrus-like, floral | 1539 | 1103 | 256 | 256 | 1024 | 1024 | 256 | 256 | |
| 22 | octan-1-ol | citrus-like, green | 1553 | 1167 | 256 | 64 | 128 | 32 | 32 | ||
| 23 | β-caryophyllene | moldy | 1578 | 1421 | 256 | 16 | 16 | 128 | 4 | 4 | |
| 24 | 2-acetylpyrazine | popcorn | 1618 | 1020 | 16 | 128 | |||||
| 25 | butanoic acid | sweaty | 1620 | 816 | 256 | 128 | 16 | ||||
| 26 | α-humulene | hop-like | 1623 | 1457 | 64 | 16 | 16 | 128 | 128 | 1024 | |
| 27 | 3-methylbutanoic acid | sweaty | 1662 | 857 | 16 | 16 | 64 | 256 | 512 | 64 | |
| 28 | 2-methylbutanoic acid | sweaty | 1662 | 857 | 16 | 16 | 64 | 256 | 512 | 64 | |
| 29 | isoborneol | moldy | 1674 | 1167 | 64 | 64 | |||||
| 30 | α-terpineol | floral, citrus-like | 1686 | 1194 | 64 | 256 | 256 | 128 | 128 | ||
| 31 | 3-sulfanylhexyl acetate | passion fruit | 1713 | 1249 | 256 | 32 | 1024 | 1024 | 512 | ||
| 32 | (2E)-undec-2-enal, | soapy, metallic | 1746 | 1384 | 16 | 8 | 16 | 16 | 128 | ||
| 33 | β-citronellol | perfume, rose-like | 1762 | 1233 | 32 | 32 | 4 | 4 | |||
| 34 | nerol | rose-like, flowery | 1785 | 1230 | 128 | ||||||
| 35 | unknown | passion fruit | 1814 | 1056 | 16 | ||||||
| 36 | 3-sulfanylhexan-1-ol | tropical fruit, | 1829 | 1125 | 64 | 16 | 16 | 1024 | 1024 | 64 | |
| exotic | |||||||||||
| 37 | hexanoic acid | sweaty | 1839 | 1012 | 16 | ||||||
| 38 | 2-methoxyphenol | smoky | 1854 | 1095 | 32 | ||||||
| 39 | (2E,4E,6Z)-nona-2,4,6-trienal | oatmeal-like, sweet | 1863 | 1277 | 64 | 256 | 32 | ||||
| 40 | (E)-β-ionone | floral, violet-like | 1931 | 1495 | 32 | 32 | 8 | ||||
| 41 | trans-4,5-epoxy-(2E)-dec-2-enal | metallic | 2000 | 1378 | 64 | 32 | 16 | 8 | |||
| 42 | 4-hydroxy-2,5-dimethylfuran-3(2H)-one (furaneol) | caramel-like | 2031 | 1067 | 2 | 128 | 1024 | 128 | |||
| 43 | 4-methylphenol (p-cresol) | phenolic, smoky | 2080 | 1080 | 256 | 1024 | 32 | 64 | |||
| 44 | eugenol (4-allyl-2-methoxyphenol) | clove-like, sweet | 2162 | 1358 | 256 | 32 | 32 | 1024 | 64 | 64 | , |
| 45 | 3-hydroxy-4,5-dimethylfuran-2(5H)-one (sotolon) | fenugreek-like, | 2179 | 1108 | 2 | 16 | 16 | 512 | 64 | 16 | |
| lovage-like | |||||||||||
| 46 | 2-methoxy-4-vinylphenol | smoky, clove-like | 2194 | 1316 | 256 | 256 | 256 | 32 | 512 | ||
| 47 | methyl anthranilate | sweet | 2237 | 1344 | 64 | 64 | 8 | 256 | 256 | 512 | |
| 48 | unknown | pepper-like, musty | 2256 | 1720 | 16 | 256 | 128 | ||||
| 49 | unknown | peach-like | 2398 | 1653 | 16 | ||||||
| 50 | indole | mothball-like | 2442 | 1296 | 64 | 64 | 64 | 64 | |||
| 51 | 3-methyl-1H-indole (skatole) | mothball-like | 2497 | 1390 | 64 | 64 | 32 | ||||
| 52 | phenylacetic acid | honey-like, | 2571 | 1266 | 16 | 8 | 128 | 8 | 16 | ||
| beeswax-like | |||||||||||
Odorants were numbered according to their retention indices on capillary column FFAP.
Odorant identified by comparison of its odor quality and intensity at the sniffing port and retention indices on capillaries DB-FFAP, DB-5 as well as mass spectra with data of reference compounds.
Odor quality perceived at the sniffing port.
Flavor dilution factor determined by AEDA on capillary FFAP.
No unequivocal mass spectrum was obtained. Identification is based on the remaining criteria in footnote b.
Compounds were tentatively identified based on comparison with literature data (odor and retention indices).
Compounds were reported for the first time in Cannabis flowers.