{"id":1765,"date":"2026-06-10T20:25:17","date_gmt":"2026-06-10T20:25:17","guid":{"rendered":"https:\/\/rheonova.com\/?post_type=project&p=1765"},"modified":"2026-06-11T09:36:41","modified_gmt":"2026-06-11T09:36:41","slug":"analyse-comparative-de-produits-alimentaires","status":"publish","type":"project","link":"https:\/\/rheonova.com\/en\/project\/analyse-comparative-de-produits-alimentaires\/","title":{"rendered":"Analyse comparative de produits alimentaires"},"content":{"rendered":"
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Industries<\/p>\n<\/div><\/div>\n\n

L'\u00e9valuation sensorielle des produits alimentaires est un enjeu central pour les industriels souhaitant se diff\u00e9rencier sur le march\u00e9. Dans le secteur du saumon fum\u00e9, la texture en bouche, le moelleux, la fermet\u00e9 ou encore la sensation grasse sont des crit\u00e8res d\u00e9terminants pour la satisfaction du consommateur. Pourtant, ces propri\u00e9t\u00e9s restent difficiles \u00e0 quantifier objectivement, car elles font traditionnellement appel \u00e0 des panels sensoriels co\u00fbteux et subjectifs.<\/p>\n<\/div><\/div>\n<\/div>\n\n

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Cette \u00e9tude propose une approche instrumentale combinant rh\u00e9ologie et tribologie pour \u00e9tablir un benchmark quantitatif des propri\u00e9t\u00e9s sensorielles de cinq saumons fum\u00e9s. L'objectif est de corr\u00e9ler des grandeurs physiques mesurables, propri\u00e9t\u00e9s visco\u00e9lastiques, m\u00e9caniques et frictionnelles, aux descripteurs sensoriels per\u00e7us lors de la mastication, et de positionner chaque produit de fa\u00e7on objective sur une carte comparative.<\/p>\n<\/div><\/div><\/div>\n\n

Comment quantifier la sensation en bouche de produits alimentaires ? <\/h2>

Pour \u00e9valuer les propri\u00e9t\u00e9s sensorielles d'\u00e9chantillons (texture en bouche, moelleux, lubrifiant), il faut chercher \u00e0 corr\u00e9ler ces propri\u00e9t\u00e9s \u00e0 des grandeurs physiques mesurables. L'analyse statistique et notamment celle en composantes principales permet de regrouper les principales propri\u00e9t\u00e9s physiques et de positionner les diff\u00e9rents \u00e9chantillons test\u00e9s sur une cartographie.<\/p>\n<\/div><\/div><\/div>\n\n

R\u00e9sultats<\/h2>

L'analyse statistique en composantes principales permet d'\u00e9tablir les corr\u00e9lations suivantes : Les grandeurs mesur\u00e9es en compression sont bien reli\u00e9es aux propri\u00e9t\u00e9s de duret\u00e9, qui traduisent le moelleux et la fermet\u00e9 des produits. Sur l'autre axe, les propri\u00e9t\u00e9s en cisaillement corr\u00e8lent fortement aux propri\u00e9t\u00e9s ductiles des \u00e9chantillons, caract\u00e9ristiques de leur aptitude au d\u00e9chirement et leur facilit\u00e9 de m\u00e2che (sensation caoutchouteuse). Les propri\u00e9t\u00e9s frictionnelles corr\u00e8lent \u00e9galement \u00e0 cet axe.<\/p>\n<\/div><\/div><\/div>\n\n

\"Figure<\/span><\/a><\/div>\n\n

Figure 1. Corr\u00e9lation des param\u00e8tres.<\/p>\n<\/div><\/div>\n\n

Les cinq \u00e9chantillons test\u00e9s pr\u00e9sentent ainsi des caract\u00e9ristiques bien distinctes : l'\u00e9chantillon 1 est tr\u00e8s ferme, au contraire de l'\u00e9chantillon 5. L'\u00e9chantillon 3 pr\u00e9sente une sensation caoutchouteuse marqu\u00e9e, au contraire de l'\u00e9chantillon 4 qui est en outre plus ferme. L'\u00e9chantillon 2 offre peu de retour de m\u00e2che.<\/p>\n<\/div><\/div><\/div>\n\n

\"Figure<\/span><\/a><\/div>\n\n

Figure 1. Positionnement des \u00e9chantillons.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n

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Une minute pour comprendre<\/h2><\/div><\/div>\n<\/div>\n<\/div>\n\n
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Objectif<\/h2>

Quantifier objectivement les propri\u00e9t\u00e9s sensorielles (fermet\u00e9, moelleux, sensation caoutchouteuse, lubrifiant) de cinq saumons fum\u00e9s gr\u00e2ce \u00e0 une approche combin\u00e9e rh\u00e9ologie-tribologie, et \u00e9tablir un benchmark comparatif.<\/p>\n<\/div><\/div><\/div>\n<\/div>\n\n

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M\u00e9thode<\/h2>
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  • Tests rh\u00e9ologiques en cisaillement, DMA, tests en compression et tests de tribologie sur cinq \u00e9chantillons.<\/li>\n
  • Analyse en composantes principales (ACP) pour corr\u00e9ler les grandeurs physiques aux descripteurs sensoriels.<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<\/div>\n\n
    \n

    R\u00e9sultats cl\u00e9s par \u00e9chantillon<\/h2>
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    • \u00c9chantillon 1 : tr\u00e8s ferme \u2194 duret\u00e9 \u00e9lev\u00e9e en compression.<\/li>\n
    • \u00c9chantillon 2 : peu de retour de m\u00e2che \u2194 propri\u00e9t\u00e9s ductiles faibles.<\/li>\n
    • \u00c9chantillon 3 : sensation caoutchouteuse marqu\u00e9e \u2014 cisaillement et friction \u00e9lev\u00e9s.<\/li>\n
    • \u00c9chantillon 4 : ferme et peu caoutchouteux \u2194 profil \u00e9quilibr\u00e9 compression\/cisaillement.<\/li>\n
    • \u00c9chantillon 5 : peu ferme \u2194 faible r\u00e9sistance en compression.<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<\/div>\n\n
      \n

      Points cl\u00e9s<\/h2>
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      • La combinaison rh\u00e9ologie + tribologie permet de discriminer objectivement des produits aux profils sensoriels proches.<\/li>\n
      • L'ACP offre une carte visuelle et quantitative pour positionner chaque produit sur les axes fermet\u00e9 \/ m\u00e2che.<\/li>\n
      • Cette approche constitue un outil de benchmark puissant pour le d\u00e9veloppement et le contr\u00f4le qualit\u00e9 de produits alimentaires.<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

        Cette \u00e9tude propose une approche instrumentale combinant rh\u00e9ologie et tribologie pour \u00e9tablir un benchmark quantitatif des propri\u00e9t\u00e9s sensorielles de cinq saumons fum\u00e9s.<\/p>\n","protected":false},"author":1,"featured_media":1791,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"project_category":[6],"project_tag":[],"class_list":["post-1765","project","type-project","status-publish","has-post-thumbnail","hentry","project_category-industries"],"yoast_head":"\nAnalyse comparative de produits alimentaires - Fabricant de rh\u00e9om\u00e8tres, analyse en rh\u00e9ologie et viscosit\u00e9 | Rheonova<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rheonova.com\/project\/analyse-comparative-de-produits-alimentaires\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Analyse comparative de produits alimentaires - 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