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Inicio / Productos / TOCONs UV / Fosfato de Galio (GaP) / TOCON_GAP6

TOCON_GAP6

  • fotodetector GaP con amplificador integrado
  • para mediciones UV + VIS (240 –560 nm)
  • encapsulado metálico TO5 sellado herméticamente con difusor
  • señal de salida 0 – 5 V
  • irradiancia máxima (límite de saturación) en 445 nm (sensibilidad pico) aprox. 900 µW/cm²
  • irradiancia mínima (límite de resolución) 90 nW/cm²

Precio unitario: 138,00€

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a partir de 1 unidad = EUR 138,00 / unidad
a partir de 10 unidades = EUR 126,50 / unidad
a partir de 50 unidades = EUR 110,50 / unidad
a partir de 100 unidades = EUR 43,50 / unidad

Para cantidades superiores, póngase en contacto con nosotros.

Publicaciones

2022 – Marker Substances in the Aroma of Truffles
Ruben Epping¹, Lilly Bliesener¹, Dr. Tilman Weiss², Matthias Koch¹, *
¹Division of Organic Trace Analysis and Food Analysis, Bundesanstalt für Materialforschung und -Prüfung, Berlin, Germany
²sglux GmbH, Berlin, Germany
*Authors to whom correspondence should be addressed.

Marker Substances in the Aroma of Truffles

Abstract
The aim of this study was to identify specific truffle marker substances within the truffle aroma. The aroma profile of different truffle species was analyzed using static headspace sampling with gas chromatography mass spectrometry analysis (SHS/GC-MS). Possible marker substances were identified, taking the additional literature into account. The selected marker substances were tested in an experiment with 19 truffle dogs. The hypothesis “If trained truffle dogs recognize the substances as supposed truffles in the context of an experiment, they can be regarded as specific” was made. As it would be nearly impossible to investigate every other possible emitter of the same compounds to determine their specificity, this hypothesis was a reasonable approximation. We were interested in the question of what it is the dogs actually search for on a chemical level and whether we can link their ability to find truffles to one or more specific marker substances. The results of the dog experiment are not as unambiguous as could have been expected based on the SHS/GC-MS measurements. Presumably, the truffle aroma is mainly characterized and perceived by dogs by dimethyl sulfide and dimethyl disulfide. However, as dogs are living beings and not analytical instruments, it seems unavoidable that one must live with some degree of uncertainty regarding these results.

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Con gusto le asesoramos sobre este producto

Romana Sonnenberg
Romana Sonnenberg
Dipl.-Ing.

+49 (0) 30 53015211
Tilman Weiss
Tilman Weiss
Dr.-Ing.

+49 (0) 30 53015211

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