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. 2025 Sep 10;73(38):24314–24325. doi: 10.1021/acs.jafc.5c07208

1. Odor-Active Compounds Identified in Aroma Distillates Isolated from Different Hemp Cultivars during AEDA.

      retention index on
FD factor
 
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
a

Odorants were numbered according to their retention indices on capillary column FFAP.

b

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.

c

Odor quality perceived at the sniffing port.

d

Flavor dilution factor determined by AEDA on capillary FFAP.

e

No unequivocal mass spectrum was obtained. Identification is based on the remaining criteria in footnote b.

f

Compounds were tentatively identified based on comparison with literature data (odor and retention indices).

g

Compounds were reported for the first time in Cannabis flowers.