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The Chemical Analysis unit of Centro Aromas y Sabores puts advanced techniques for the identification and quantification of aromatic compounds in different matrices at the disposal of the industry. In this way, knowledge acquired in research and development projects is transferred to the productive sector.
The Centro de Aromas of DICTUC S.A. has been certified by the national accreditation system of the INN as a testing laboratory according to the NCh-ISO 17025.Of2005 in the area of wine chemistry and winemaking supplies. The following tests are within the scope of this accreditation: TCA and TBA in wines, cork stoppers, wood, supplies and oenological environments, urethane and EF-EG in wines. Therefore, it has a quality system that ensures correct, efficient, and orderly operation that meets the established requirements and delivers a high-level service.
The chemical analysis laboratory is equipped with world-class technology:
Two gas chromatographs with mass detectors (GC-MS). One gas chromatograph with mass and flame photometric detectors (GC-MS/FPD). One gas chromatograph with a quadrupole mass detector (GC/MS/MS). One gas chromatograph with flame ionization detector and a sniffing port (GC-O).
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Analysis |
Analytes |
Analysis methods |
| Anisoles
Wines, beverages and foods
cork stoppers, oak barrels/woods, winemaking supplies
environmental sampling
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2,4,6-trichloroanisole (TCA)
2,3,4,6-tetrachloroanisole (TeCA)
2,4,6-tribromoanisole (TBA)
Pentachloroanisole (PCA)
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Solid-phase microextraction (SPME), gas chromatography with mass spectroscopy (GC-MS) in single ion monitoring mode (SIM). Stable isotope dilution analysis (SIDA) quantification.
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| Anisoles & Halophenols
Wines, beverages and foods
cork stoppers, oak barrels/woods, winemaking supplies
environmental sampling
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Anisoles:
2,4,6-trichloroanisole (TCA)
2,3,4,6-tetracloroanisol (TeCA)
2,4,6-tribromoanisole (TBA)
Pentachloroanisole (PCA)
Halophenols:
2,4,6-trichlorophenol (TCP)
2,3,4,6-tetraclorophenol (TeCP)
2,4,6-tribromophenol (TBP)
Pentachlorophenol (PCA)
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Derivatization, solid-phase microextraction (SPME), gas chromatography with mass spectroscopy (GC-MS) in single ion monitoring mode (SIM). Stable isotope dilution analysis (SIDA) quantification. |
| Volatile phenols
Wines
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4-ethylphenol
4-ethylguaiacol |
Liquid-liquid solvent extraction, gas chromatography with mass spectroscopy (GC-MS) in single ion monitoring mode (SIM). Stable isotope dilution analysis (SIDA) quantification.
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| Ethyl Carbamate
Wines
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Ethyl Carbamate |
Liquid-liquid solvent extraction, gas chromatography with mass spectroscopy (GC-MS) in single ion monitoring mode (SIM). Absolute quantification with internal standard. |
| Oak Wood Aroma Profiles
Wood
Wines
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Furfural
Methylfurfural
Hydroxymethylfurfural
cis-oak lactone, trans-oak lactone
Methylguaiacol
Guaiacol
Eugenol
Isoeugenol
Vanillin
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Liquid-liquid solvent extraction, gas chromatography with mass spectroscopy (GC-MS) in scan mode. Absolute quantification with internal standard. |
| Aroma Profile (Free Aromas)
Wines, beverages and food, general supplies |
Compounds from the following families: alcohols, esters, lactones, aldehydes, terpenes, phenols, etc.
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Liquid-liquid extraction, gas chromatography with mass spectrometry (GC-MS). Relative quantification with internal standard.
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| Aroma Precursors (Bound Aromas)
Wines, fruits |
Compounds from the following families: alcohols, esters, lactones, aldehydes, terpenes, phenols, norisoprenoids, etc.
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Enzymatic reaction or acid hydrolysis, liquid-liquid extraction, gas chromatography with mass spectrometry (GC-MS). Relative quantification with internal standard. |
| Aromatic-olfactometric Profile
Wines, beverages, and food |
Correlation of each identified chemical compound with its olfactory descriptor (aroma).
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Liquid-liquid extraction, gas chromatography and sniffing (GC-O). Relative quantification with internal standard. |
| Pyrazines
Wine, grape juice and berries |
3-isobutyl-2-methoxypyracine (IBPM)
3-isopropyl-2-methoxypyracine (IPMP). |
Solid-phase microextraction (SPME), gas chromatography with mass spectroscopy (GC/MS/MS) with chemical ionization (CI). |
| Free Thiols
Wine |
4- mercapto- 4-methyl- 2-pentanone (4MMP)
3-mercaptohexanol (3MH)
3-mercaptohexyl acetato (Ac3MH)
2-methyl-3-furanthiol (2MFT)
Furfuryl mercaptan (FFT)
Benzyl mercaptan (BMT)
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Solid-phase extraction (SPE), gas chromatography with mass spectroscopy (GC-MS) in single ion monitoring mode (SIM). |
| Bound Thiols
Wine, grape juice and berries |
4-mercapto-4-methyl-2-pentanone (4MMP)
3-mercaptohexanol (3MH)
2-methyl-3-furanthiol (2MFT)
Furfuryl mercaptan (FFT)
Benzyl mercaptan (BMT)
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Enzymatic reaction, solid-phase extraction (SPE), gas chromatography with mass spectroscopy (GC-MS) in single ion monitoring mode (SIM). |
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