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) |