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Flash profil1 Flash profil and MFA Dominique Valentin ENSBANA/CESG Université de Bourgogne

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Presentation on theme: "Flash profil1 Flash profil and MFA Dominique Valentin ENSBANA/CESG Université de Bourgogne"— Presentation transcript:

1 flash profil1 Flash profil and MFA Dominique Valentin ENSBANA/CESG Université de Bourgogne valentin@u-bourgogne.fr

2 flash profil2 Definition Flash Profile (FP) is a sensory descriptive method derived from Free Choice Profiling where each subject chooses and uses his/her own words to evaluate the whole product set comparatively. Dairou V. and Siefferman J.M (2002) A comparison of 14 jams characterized by conventional profile and a quick original method, the Flash Profile. Journal of food science, 67,826-834 Describe rapidly the sensory properties of a product set

3 flash profil3 Principle  Free description  comparative presentation  Ranking procedure « How would you describe the main sensory dimensions of the products » « Rank the product according to each dimension that you identified »

4 flash profil4 Principle Descriptor: + - Descriptor: Fruity + - A C BD E G F H

5 flash profil5 Methodology Preliminary session (30 mn to 1h): each assessor write down a first list of descriptors Inter-session: each assessor read the descriptors written by other assessors Main Session (2 to 3 h): comparative evaluation of the set of products for each generated descriptor

6 flash profil6 Methodology Number of assessors: 4 to 6 sensory experts Number of products: Max 15 but depend on the nature of the products Number of repetitions: 2 or presentation of some product in duplicate to test reproducibility

7 flash profil7 An example: Flash profile and beers 6 lager beers: Sapporo (Japan) Casablanca (Morocco) Page 24 (France) Carlsberg (Denmark) Tsintao (Chine) 6 trained assessors

8 flash profil8 An example: raw data DescriptorsSapporoCasablancaPage 24CarlsbergTsingtao Fruity32541 Malt43152 Phenol42531 Persistance45231 Sweet42531 Assessor 1 DescriptorsSapporoCasablancaPage 24CarlsbergTsingtao Strong taste43521 sweet32415 bitter14352 malt54213 sparkling45213 Assessor 2

9 flash profil9 An example : raw data DescriptorsSapporoCasablancaPage 24CarlsbergTsingtao Bitter24513 Alcohol24513 Assessor 3 DescriptorsSapporoCasablancaPage 24CarlsbergTsingtao Fruity42531 Malt35412 Bitter43251 Alcohol42513 Hop24153 Assessor 4

10 flash profil10 An example : raw data DescriptorsSapporoCasablancaPage 24CarlsbergTsingtao Taste intensity23541 Hop45123 Malt23541 Bitter53241 Alcohol31542 Sweet35421 Assessor 5 DescriptorsSapporoCasablancaPage 24CarlsbergTsingtao Hop32514 Malt45231 Bitter31524 Alcohol32514 Sparkling21543 Assessor 6

11 flash profil11 Dimension Eigenvalue % Variance Cumulated % Variance 1 3.5936 37.75 37.75 2 2.6796 28.15 65.89 3 2.1298 22.37 88.26 4 1.1176 11.74 100.00 An example: MFA results

12 flash profil12 -3.0-1.501.53.0 -4 -2 0 2 4 Factor 1 - 37.75 % Factor 2 - 28.15 % Sapporo Casablanca Page 24 Carlsberg Tsingtao An example: MFA results

13 flash profil13 An example: MFA results

14 flash profil14 -3.0-1.501.53.0 -4 -2 0 2 4 Factor 1 - 37.75 % Factor 2 - 28.15 % Sapporo Casablanca Page 24 Carlsberg Tsingtao An example: MFA results

15 flash profil15 -3.0-1.501.53.0 -4 -2 0 2 4 Factor 1 - 37.75 % Factor 2 - 28.15 % Page 24 Carlsberg Tsingtao J1 J2 J3 J4 J5 J6 J1 J3 J4 J5 J6 J1 J2 J4 J5 J6 J2 J3 An example: MFA results

16 flash profil16 -0.8-0.400.40.8 -0.8 -0.4 0 0.4 0.8 Factor1 - 36.48 % Factor 2 - 30.14 % fruity1 malt1 phenol1 persistance1 sweet1 strong taste 2 sweet2 bitter2 malt2 sparking2 amère3 alcohol3 fruity4 malt4 bitter4 alcohol4 hop4 Intensity taste 5 hop5 malt5 bitter5 alcohol5 sucre5 An example: MFA results

17 flash profil17 An example: MFA results

18 flash profil18 -0.8-0.400.40.8 -0.8 -0.4 0 0.4 0.8 Factor 1 - 36.48 % Factor 2 - 30.14 % fruity1 malt1 phenol1 persistance1 sweet1 strong taste 2 sweet2 bitter2 malt2 sparking2 amère3 alcohol3 fruity4 malt4 bitter4 alcohol4 hop4 taste intensity 5 hop5 malt5 bitter5 alcohol5 sweet5 An example: MFA results

19 flash profil19 An example: MFA results

20 flash profil20 An example: MFA results

21 flash profil21 00.250.500.751.00 0 0.25 0.50 0.75 1.00 Factor 1 - 36.48 % Factor 2 - 30.14 % J1 J2 J3 J4 J5 An example: MFA results

22 flash profil22 00.250.500.751.00 0 0.25 0.50 0.75 1.00 Factor 1 - 36.48 % Factor 3 - 20.28 % J1 J2 J3 J4 J5 An example: MFA results

23 flash profil23 | 1 2 3 4 5 MFA ----+------------------------------------------ 1 | 1.000 2 | 0.522 1.000 3 | 0.277 0.201 1.000 4 | 0.722 0.633 0.583 1.000 5 | 0.792 0.645 0.239 0.412 1.000 MFA | 0.861 0.784 0.569 0.859 0.805 1.000 ----+------------------------------------------ RV coefficients between assessors An example: MFA results

24 flash profil24 Dairou, V., and Sieffermann, J.-M. (2002). A comparison of 14 jams characterized by Conventional Profile and a quick original method, the Flash Profile. Journal of Food Science, 67(2), 826-834. Delarue, J., and Sieffermann, J.-M. (2004). Sensory mapping using Flash profile. Comparison with a conventional descriptive method for the evaluation of the flavour of fruit dairy products. Food Quality and Preference, 15(4), 383-392. L. Perrin, F. Jourjon, R. Symoneaux, C. Asselin & J. Pagès (2006) Comparaison de deux profils libres de vins réalisés par des professionnels et un profil conventionnel; 9èmes Journées Européennes Agro-Industrie et Méthodes Statistiques Montpellier, France – 25-27 janvier 2006 Some references


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