Key Aroma Compounds in Two Bavarian Gins

Buck, Nina; Goblirsch, T.; Beauchamp, Jonathan; Ortner, Eva

doi:10.3390/app10207269

Cited by 18 publications

(18 citation statements)

References 37 publications

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“…GC-MS/O analyses were performed comparable to GC-O with the following differences only: instead of an FID, a DSQ II MS (Thermo Fisher Scientific GmbH, Dreieich, Germany) was used as a detector and sample aliquots were injected by a multipurpose autosampler (MPS 2, Gerstel GmbH & Co. KG, Mülheim an der Ruhr, Germany; see [ 34 ] for a detailed list of instrument parameters). Mass spectra (if obtained) were generated in electron ionization (EI) full scan mode (70 eV) over an m/z range of 35–399).…”

Section: Methodsmentioning

confidence: 99%

Odor and Constituent Odorants of HDPE–Lignin Blends of Different Lignin Origin

et al. 2022

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The still-rising global demand for plastics warrants the substitution of non-renewable mineral oil-based resources with natural products as a decisive step towards sustainability. Lignin is one of the most abundant natural polymers and represents an ideal but hitherto highly underutilized raw material to replace petroleum-based resources. In particular, the use of lignin composites, especially polyolefin–lignin blends, is currently on the rise. In addition to specific mechanical property requirements, a challenge of implementing these alternative polymers is their heavy odor load. This is especially relevant for lignin, which exhibits an intrinsic odor that limits its use as an ingredient in blends intended for high quality applications. The present study addressed this issue by undertaking a systematic evaluation of the odor properties and constituent odorants of commercially available lignins and related high-density polyethylene (HDPE) blends. The potent odors of the investigated samples could be attributed to the presence of 71 individual odorous constituents that originated primarily from the structurally complex lignin. The majority of them was assignable to six main substance classes: carboxylic acids, aldehydes, phenols, furan compounds, alkylated 2-cyclopenten-1-ones, and sulfur compounds. The odors were strongly related to both the lignin raw materials and the different processes of their extraction, while the production of the blends had a lower but also significant influence. Especially the investigated soda lignin with hay- and honey-like odors was highly different in its odorant composition compared to lignins resulting from the sulfurous kraft process predominantly characterized by smoky and burnt odors. These observations highlight the importance of sufficient purification of the lignin raw material and the need for odor abatement procedures during the compounding process. The molecular elucidation of the odorants causing the strong odor represents an important procedure to develop odor reduction strategies.

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Section: Methodsmentioning

confidence: 99%

Odor and Constituent Odorants of HDPE–Lignin Blends of Different Lignin Origin

et al. 2022

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“…die Identifizierung enthaltener geruchsaktiver Verbindungen, bspw. zur Entschlüsselung des Aromas von Lebensmitteln [1][2][3][4]. Dabei finden verschiedene, teilweise sehr aufwändige Verfahren zur Identifizierung und Bewertung der Geruchskomponenten statt.…”

Section: Introductionunclassified

“…Dabei finden verschiedene, teilweise sehr aufwändige Verfahren zur Identifizierung und Bewertung der Geruchskomponenten statt. Im Rahmen gaschromatographischer (GC) Analysen werden zur Identifizierung geruchsaktiver Verbindungen häufig drei Faktoren betrachtet: Retentionsindices (RI), Geruchsmerkmale und Massenspektren (MS) [1][2][3][4]. Retentionsindices bieten eine Möglichkeit zur Darstellung des Retentionsverhaltens der Analyten durch die Standardisierung mit einer Standardreihe (i.d.R.…”

Section: Introductionunclassified

“…Alkane) [5]. Die Geruchsmerkmale werden durch den Einsatz eines Olfaktometrie-Ports, welcher als zusätzlicher Detektor am Gaschromatographen (GC) dient, durch den Anwender bestimmt [1,2]. Die MS der Analyten werden entsprechend durch die Kopplung des GC mit einem Massenspektrometer (GC-MS) generiert.…”

Section: Introductionunclassified

“…AM-DIS [6][7][8]), geeigneten Datenbanken (DB) bzw. Referenzen für RI und MS [2,[8][9][10] die Erfahrung von Experten zum Einsatz kommt.…”

Section: Introductionunclassified

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P5.1 - Automatisierte Auswertung chromatographischer Daten für die Bewertung von Whisky

Haug¹,

Singh²,

Grasskamp³

et al. 2021

Poster

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Sensory evaluation of axillary odour samples of younger and older adults by a trained panel

Owsienko,

Schwinn,

Eskofier

et al. 2023

Flavour & Fragrance J

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It has been reported that a distinct ‘old person smell’ can develop with advancing age, however, this odour has not yet been sufficiently described in previous research. Sensory evaluation by a trained panel might be useful to describe alterations with age in body odour (BO). To evaluate the alterations and achieve first insights into the ‘old person smell’, this pilot study determined the odour profiles of BO samples from both a younger and an older age group with a trained panel. In addition, we aimed to assess whether the panellists can recognize the age group based on the smell of the BO samples. Eight younger (20–28 years) and eight older (80–83 years) participants sampled their BO by wearing a cotton T‐shirt for one night. The samples were sensorially evaluated by a trained panel, including ratings of total intensity and pleasantness. Additionally, an age labelling task was performed as a forced‐choice decision. Results revealed that the odour profiles of the BO samples were very similar for both age groups. Nevertheless, trained panellists were able to predict the age group with significantly higher accuracy (p = .042) than expected by chance (61% mean accuracy over all panellists). Furthermore, a linear support vector machine (SVM) classifier achieved an average accuracy of 69%. This finding indicates that the age of a person affects the BO, though it is not reflected in significantly distinct odour profiles.

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Key Aroma Compounds in Two Bavarian Gins

Cited by 18 publications

References 37 publications

Odor and Constituent Odorants of HDPE–Lignin Blends of Different Lignin Origin

Odor and Constituent Odorants of HDPE–Lignin Blends of Different Lignin Origin

P5.1 - Automatisierte Auswertung chromatographischer Daten für die Bewertung von Whisky

Sensory evaluation of axillary odour samples of younger and older adults by a trained panel

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