difference tests

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product preparation: no preparation (water) vs. complex preparation (instant coffee). - countries: France, Italy, Madagascar and Vietnam. 3 samples. Identify the ...
Remote Difference Tests through the Internet around the world: Sensodist in France, Italy, Madagascar & Vietnam C. DACREMONT1, F.SORRENTINO2, A.PECOURT1, E.MONTELEONE3, A.RECCHIA3, V.RAMAROSON4, D.HOANG NGUYEN5, D.VALENTIN1 1CSGA

– AGROSUP DIJON, France. 2 BIOSYSTEMES, France.

3

UNIVERSITY OF FLORENCE, Italy. 4LAS/FOFIFA, Madagascar. 5HOCHIMINH CITY UNIVERSITY OF TECHNOLOGY, Vietnam.

Introduction In a global market, the food industry is developing products aimed to be sold in many countries. To gain new markets, products should be adapted to the liking and behavior of local consumers. However, organizing sensory or consumer tests in fast developing markets can be expensive and complex. Using the Internet for studies in remote countries seems a promising solution. The objective of the present study is to explore the experimental conditions in which remote sensory tests could be conducted through the Internet regarding : - instruction language: native language vs. English - instruction complexity: lower complexity (triangle test ) vs. higher complexity (A – not A with reminder) - product preparation: no preparation (water) vs. complex preparation (instant coffee) - countries: France, Italy, Madagascar and Vietnam

Material & Methods 4 Countries

3 Experimental Conditions Products:  50 ml Bottled Water  50 ml Bottled Water + 11 mM NaCl

France

Italy

Madagascar

Vietnam

Test Complexity Control: In lab FIZZ Network

Remote test by Internet FIZZ Web

Remote test by Internet FIZZ Web Instructions:

Native Language

Instructions:

Native Language

English

N≈60 in each country

N≈60 in each country

Instructions:

Products:  1,6 g Instant coffee + 1,2 g Sucrose  1,6 g Instant coffee + 2 g Sucrose + 70 mL hot water

N≈60 in each country

Ref. Ref.

Triangle test 3 samples Identify the odd sample

A/not A with reminder Is the sample the same as the reference?

Results & Discussion Triangle test - Percentages of correct responses: F 62.70 4.5867 3.4854 17.1418 1.6212 1.4129

p