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Table 2 Composition and abundance of solvent extractives from various agricultural residues by GC–MS detection

From: Aliphatic extractive effects on acetic acid catalysis of typical agricultural residues to xylo-oligosaccharide and enzymatic hydrolyzability of cellulose

Compounds Area (%)
Benzene–ethanol extractives Ethanol extractives
CC SB WS PS CC SB WS PS
n-Fatty acids Tetradecanoic acid    3.17 2.08     
  Pentadecanoic acid 1.58 1.31   2.81     
  N-Hexadecanoic acid 34.25 57.22 23.09 44.86 3.62 7.18 9.81 4.21
  Palmitoleic acid 4.50 7.14       
  Gamolenic acid     2.19     
  Heptadecanoic acid     1.33     
  9,12-Octadecadienoic acid   19.18   26.06     
  Cis-Vaccenic acid 37.98        
  Cis-13-Octadecenoic acid    1.88      
  Oleic acid 2.36   2.56      
  Octadecanoic acid   2.13   5.68    1.98  
n-Fatty alcohols Phytol    3.11      
n-Alkanes 4-Methyl-decane       2.01 1.66 1.61
  2,6-Dimethyl-undecane       1.74   
  Dodecane    3.06    2.24 2.86 2.73
  4,6-Dimethyl-dodecane       2.71   2.05
  2,6,11-Trimethyl-dodecane       7.56 3.63 5.40
  2,6,10-Trimethyl-dodecane      2.68 1.72 3.38 6.05
  2,7,10-Trimethyl-dodecane       3.22   
  Tridecane    4.85      
  Tetradecane        3.35  
  Pentadecane       5.78   2.80
  4-Methyl-pentadecane         1.67
  Hexadecane        7.48  
  2,6,10,14-Tetramethyl-hexadecane       5.93   5.01
  2,6,11,15-Tetramethyl-hexadecane        3.29 4.02
  2,6,10,15-Tetramethyl-heptadecane       3.22 2.14 3.02
  Heptacosane      10.55 5.25 4.34  
  Octadecane         5.56
  Nonadecane        3.39  
  Heneicosane       5.90   
  Tetracosane       2.33   
  2-Methyl-hexacosane        2.59 2.19
  Hentriacontane      5.36    
Aldehydes 9,17-octadecadienal     1.96     
  13-Octadecenal    4.81      
  Vanillin 2.44       2.39  
Ketones 6,10,14-Trimethyl-2-pentadecanone    11.74      
  2-Heptadecanone    6.92      
Steroid ketones 6-Hydroxy-4,4,7a-trimethyl-5,6,7,7a-tetrahydrobenzofuran-2(4 h)-one        1.78  
  Dehydrovomifoliol        4.88  
  1-(4-Hydroxy-3,5-dimethoxyphenyl)-ethanone        3.23  
  4,5,6-Trimethoxy-7-methyl-3 h-2-benzofuran-1-one       2.44   
  2,3-Dihydro-benzofuran 3.34 6.59      1.74  
Sterols 4-(2,6,6-Trimethyl-1-cyclohexen-1-yl)-3-buten-2-ol       4.15   
  2-Methyl-4-(1,3,3-trimethyl-7-oxabicyclo [4. 1. 0] hept-2-yl)-3-buten-2-ol        2.44  
  3-Deoxyestradiol         1.60
Phenols 2-Methoxy-4-vinylphenol 2.45       2.06  
  2,4-Di-tert-butylphenol    3.52    2.50 2.06 2.21
  4-((1e)-3-Hydroxy-1-propenyl)-2-methoxyphenol 1.50 2.43 7.53 8.31    11.88 12.70
  Sinapyl alcohol   2.28 2.71 4.72    2.35 5.24
Esters Geranyl isovalerate        1.77  
  Diisooctyl phthalate    3.40      
Triglycerides Glycerin 9.61 0.87       
Monoglycerides 2-Palmitoylglycerol 6.14 6.02    60.14    
Aromatic hydrocarbon p-Xylene       8.35 3.78 6.25