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. 2022 Mar 21;13:836617. doi: 10.3389/fmicb.2022.836617

TABLE 2.

Detected and quantified volatile metabolites with chemical, sensory and origin features (Luebke, 1980; Lambrechts and Pretorius, 2000).

Code IUPAC name Common name Chemical Family Origin Microorganism and phase where metabolite acts as signature Smell
m01 Ethanal Acetaldehyde Aldehyde Fermentative No association to either microorganisms or phases Sour, green apple (Lambrechts and Pretorius, 2000)
m02 Methyl acetate Methyl acetate Ester Varietal and fermentative No association to either microorganisms or phases Solvant (Luebke, 1980)
m03 Ethyl acetate Ethyl acetate Ester Varietal and fermentative HVd7, HVd12 Varnish, nail polish, fruity (Lambrechts and Pretorius, 2000)
m04 2-methylbutanal 2-methylbutanal Aldehyde Varietal and fermentative No association to either microorganisms or phases Malt (Luebke, 1980)
m05 3-methylbutanal Isovaleraldehyde Aldehyde Varietal No association to either microorganisms or phases Warm, herbaceous, slightly fruity (Lambrechts and Pretorius, 2000)
m06 Ethanol Ethanol Alcohol Fermentative BBd7, BBd12, HVd7, HVd12 Alcohol (Lambrechts and Pretorius, 2000)
m07 Ethyl propanoate Ethyl propanoate Ester Fermentative HVd7, HVd12 Sweet fruity rum juicy fruit grape pineapple (Luebke, 1980)
m08 Ethyl 2-methylpropanoate Ethyl isobutyrate Ester Fermentative BBd12 Sweet, rubber (Luebke, 1980)
m09 Propyl acetate Propyl acetate Ester Fermentative HVd7, HVd12 Solvent-like pungency, lifting, fusel, amyl alcohol, sweet and fruity (Luebke, 1980)
m10 Pentan-2-one 2-pentanone Ketone Varietal No association to either microorganisms or phases Etherial, diffusive and sweet banana-like with fermented woody nuance (Luebke, 1980)
m11 Butane-2,3-dione Diacetyl Ketone Fermentative No association to either microorganisms or phases Buttery (Lambrechts and Pretorius, 2000)
m12 Hexanal Hexanal Aldehyde Varietal No association to either microorganisms or phases Grass, tallow, fat (Luebke, 1980)
m13 2-methylpropan-1-ol Isobutanol Primary alcohol Fermentative No association to either microorganisms or phases Wine, solvent, bitter (Luebke, 1980)
m14 3-methylbutan-1-ol Isoamylacetate Ester Fermentative No association to either microorganisms or phases Banana, pear (Lambrechts and Pretorius, 2000)
m15 2-methyl-2-propanol Tert-butanol Primary alcohol Varietal and fermentative No association to either microorganisms or phases Camphor (Luebke, 1980)
m16 3-methylbutan-1-ol Isoamyl alcohol Primary alcohol Varietal and fermentative HVd7, HVd12 Marzipan (Lambrechts and Pretorius, 2000)
m17 3-hydroxybutan-2-one Acetoin Ketone Fermentative No association to either microorganisms or phases Butter, cream (Luebke, 1980)
m18 6-methyl-5-hepten-2-one 6-methyl-5-hepten-2-one Ketone Varietal No association to either microorganisms or phases Fruity, apple, musty, ketonic and creamy with slight cheesy and banana nuances (Luebke, 1980)
m19 Hexan-1-ol Hexanol Primary alcohol Varietal and fermentative HVd7, HVd12 Resin, flower, green (Luebke, 1980)
m20 1-octen-3-ol 1-octen-3-ol Secondary alcohol Varietal and fermentative BBd7, HVd7 Earthy, green, oily, vegetative and fungal (Luebke, 1980)
m21 Heptanol Heptanol Alcohol Varietal and fermentative HVd7, HVd12 Mushroom, green (Luebke, 1980)
m22 Benzaldehyde Benzaldehyde Aldehyde Varietal and fermentative No association to either microorganisms or phases Bitter almond (Lambrechts and Pretorius, 2000)
m23 Nonan-1-ol Nonanol Alcohol Varietal and fermentative HVd7, HVd12 Fresh clean fatty floral rose orange dusty wet oily (Luebke, 1980)
m24 2-phenylethyl acetate 2-phenylethyl acetate Ester Varietal and fermentative HVd7 Rose, honey, fruity, flowery (Lambrechts and Pretorius, 2000)
m25 2-phenylethan-1-ol Phenylethanol Alcohol Varietal and fermentative HVd12 Floral, rose (Lambrechts and Pretorius, 2000)
m26 Phenol Phenol Phenol Varietal and fermentative No association to either microorganisms or phases Phenol (Luebke, 1980)
m27 Acetic acid Acetic acid Saturated fatty acid Fermentative AId12 Vinegar, pungent (Lambrechts and Pretorius, 2000)
m28 3-methylbutanoic acid Isovaleric acid Saturated fatty acid Fermentative No association to either microorganisms or phases Rancid, cheese, sweaty, rancid, fatty, pungent (Lambrechts and Pretorius, 2000)
m29 Pentanoic acid Valeric acid Saturated fatty acid Fermentative HVd12 Unpleasant (Lambrechts and Pretorius, 2000)
m30 Octanoic acid Caprylic acid Saturated fatty acid Fermentative No association to either microorganisms or phases Oily, fatty rancid, soapy, sweet, faint fruity, butter (Lambrechts and Pretorius, 2000)
m31 Nonanoic acid Nonanoic acid Saturated fatty acid Fermentative No association to either microorganisms or phases Waxy, dirty and cheesy with cultured dairy nuance (Luebke, 1980)
m32 Decanoic acid Capric acid Saturated fatty acid Fermentative No association to either microorganisms or phases Fatty, unpleasant, rancid, citrus, phenolic (Lambrechts and Pretorius, 2000)