• Non ci sono risultati.

Coffee sensory properties: a complementary data fusion to simulate odor&taste integration by instrumental approach. Possibilities and limits

N/A
N/A
Protected

Academic year: 2021

Condividi "Coffee sensory properties: a complementary data fusion to simulate odor&taste integration by instrumental approach. Possibilities and limits"

Copied!
3
0
0

Testo completo

(1)

2019­03­21 16:55:53

Cocotea 2019

Topic:  Coffee  Type:  Poster  Abstract no.:  A­165  Status:  submitted  Coffee sensory properties: a complementary data fusion to simulate odor&taste integration  by instrumental approach. Possibilities and limits

E. Liberto1, D. Bressanello1, G. Pellegrino2, M. R. Ruosi2, C. Bicchi1

1Drug Science and Technology Department, University of Turin, Turin, Italy, 2Lavazza S.p.A, Turin, Italy Text This work deals with the study of a flavoromics approach to describe and predict coffee sensory quality and  its potential and limits in routine control. The cup tasting is nowadays the most important criteria to define the coffee quality, although i) it is time­ consuming requiring panel training and alignment, and ii) it cannot be easily implemented at­line for an  immediate feedback and/or a critical objective evaluation. Flavoromics is an “­omic” and “­holistic” approach  focused on low molecular mass compounds (volatile and non­volatile) linking them to a sensorial perception  through chemometric approaches1­2. Coffee cupping considers both aroma and taste and its evaluation  considers several attributes at the same time3­4: the definition of the flavor quality therefore requires two  complementary analytical techniques. Chemical data of the investigated coffee samples (n=150) was obtained by analyzing both volatile and non­ volatile fraction by HS­SPME­GC­MS and HPLC­UV/DAD. Sensory data were collected by an expert panel in a monadic way through a quantitative descriptive analysis. Multiple Factorial Analysis (MFA) was used to  correlate the pool of observations (volatiles, non­volatiles, and sensory scores). PLS­DA was applied to  select informative compounds from each analytical approach and PLS regression was used to correlate  chemical and sensory data in prediction. When focusing on bitter note, the sensory prediction models relative to targeted aroma and taste fingerprints  displays good results in determining the sensory scores (Q2 in prediction is 0.98 vs 0.95 with a prediction  error of 0.6230 vs 1.0501 respectively for aroma and taste). However, coffee cupping is a multimodal  perception involving different attributes at the same time3­4 that can therefore be better represented by  adopting an aroma and taste data fusion. This approach results in bitter scores prediction values of Q2 0.89  with an error of 1.4007. A comparison of the Q model parameter with the other sensory notes highlights a  different contribution of this taste fraction in their description since it has more impact in describing Acid,  Bitter, Woody notes than Flowery and Fruity. References [1] J. Charve et al. Flavour Fragr. J. 26, 429–440, 2011. [2] I. Ronningen. PhD dissertation, 2016. [3] C. Lindinger et al. Anal Chem, 80, 1574–1581, 2008 [4] J. S. Ribeiro et al. Anal Chim Acta, 634, 172–179, 2009.  

(2)

Authors

First author:  Erica Liberto 

Presented by:  Erica Liberto 

(3)

Riferimenti

Documenti correlati

tematica dei diritti fondamentali dell’uomo in materia penale nel complesso percorso normativo della Carta costituzionale e, soprattutto, ha posto in fase di germinazione nelle

All of the composite spectra have been fit using χ 2 statis- tic in the energy range E = 3 − 30 keV (unless otherwise specified), as > 60% of the individual source spectra

Finally, in section 6 we introduce a recent iterative method to solve (multi marginal) optimal transportation problems and we present some numerical experiments for Coulomb,

In conclusion, the presence of a FAS-mediated apoptosis defect leading to an ALPS- like immune dysregulation in patients with GD suggests that this disorder should be excluded in

bili, nel tentativo di conferire operatività giuridica e dinamicità alla nozione statica e descrittiva di crisi ex art. Il primo, che può essere definito esterno tende a

However, if the changes in D4000n (or HδA) were entirely due to stellar age differences, where high-mass galaxies are ∼2 Gyr older than low-mass galaxies, the D4000n – stellar

Derivation of completeness and bias corrections We generated 60 mock catalogs using the parameterization as described above (Sects. The mock sources were inserted into the mosaic

coli isolated from dogs admitted to a Veterinary Teaching Hospital; to identify risk factors associated with acquisition and colonization of multidrug-resistant