{"id":13511,"date":"2019-11-28T04:00:09","date_gmt":"2019-11-28T10:00:09","guid":{"rendered":"https:\/\/www.insta-pro.com\/?p=13511"},"modified":"2019-11-28T04:00:09","modified_gmt":"2019-11-28T10:00:09","slug":"fonctionnalite-des-proteines-quest-ce-que-cela-veut-dire-et-quelle-est-son-importance","status":"publish","type":"post","link":"https:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/fonctionnalite-des-proteines-quest-ce-que-cela-veut-dire-et-quelle-est-son-importance\/","title":{"rendered":"FONCTIONNALIT\u00c9 DES PROT\u00c9INES\u00a0: QU\u2019EST-CE QUE CELA VEUT DIRE, ET QUELLE EST SON IMPORTANCE\u00a0?"},"content":{"rendered":"<p>Quel est le degr\u00e9 de fonctionnalit\u00e9 des prot\u00e9ines dans vos produits\u00a0?\u00a0 Comment le d\u00e9terminer\u00a0?\u00a0 Est-ce important pour atteindre vos objectifs\u00a0?<\/p>\n<p>On nous pose parfois ces questions, et bien qu\u2019il n\u2019y ait pas de r\u00e9ponse universelle, il est int\u00e9ressant de comprendre le principe de la fonctionnalit\u00e9 des prot\u00e9ines.\u00a0 En fonction de votre activit\u00e9, le plus important est de savoir quoi demander.<\/p>\n<p>Le crit\u00e8res de fonctionnalit\u00e9 des prot\u00e9ines est souvent expliqu\u00e9 de fa\u00e7on pratique, avec l\u2019exemple de la viande crue.\u00a0 Lorsque l\u2019on fa\u00e7onne des boulettes de viande crue, chacune d\u2019entre elles <a href=\"https:\/\/www.shutterstock.com\/search\/raw+meatballs\">reste agglom\u00e9r\u00e9e<\/a>.\u00a0 Cela montre assez clairement que les prot\u00e9ines crues ou \u00e0 l\u2019\u00e9tat brut sont tr\u00e8s fonctionnelles\u00a0: elles interagissent entre elles (et avec d\u2019autres composantes de la viande), et restent coll\u00e9es les unes aux autres.\u00a0 C\u2019est logique, si l\u2019on se penche sur la <a href=\"https:\/\/en.wikipedia.org\/wiki\/Protein_structure\">structure chimique des prot\u00e9ines<\/a>.<\/p>\n<p>Prenez par exemple le cas de la viande cuite.\u00a0 La viande chauff\u00e9e ne conserve pas sa capacit\u00e9 \u00e0 former une masse modelable et homog\u00e8ne \u2013 <a href=\"https:\/\/www.agefotostock.com\/age\/en\/Stock-Images\/Rights-Managed\/TDL-M16840CK\">lorsque la viande cuite est d\u00e9coup\u00e9e, les morceaux ne peuvent plus \u00eatre fusionn\u00e9s.<\/a>\u00a0 Une fois cuites, les prot\u00e9ines sont moins fonctionnelles,\u00a0 et ce, dans une proportion qui d\u00e9pend de la combinaison temp\u00e9rature\/temps de chauffe \u00e0 laquelle a \u00e9t\u00e9 soumise la viande.\u00a0 Cela nous am\u00e8ne \u00e0 la partie suivante\u00a0: comment mesurer la fonctionnalit\u00e9 des prot\u00e9ines\u00a0?<\/p>\n<p>On utilise souvent un <a href=\"https:\/\/en.wikipedia.org\/wiki\/Protein_dispersibility_index\">indice de dispersibilit\u00e9 des prot\u00e9ines<\/a> (IDP) pour mesurer \u00e0 quel point les prot\u00e9ines sont fonctionnelles.\u00a0 Plus le pourcentage est \u00e9lev\u00e9, plus les prot\u00e9ines sont fonctionnelles.\u00a0 Si vos aliments affichent le bon IDP pour l\u2019usage pr\u00e9vu, cela vous aidera \u00e0 mettre sur le march\u00e9 des ingr\u00e9dients ou produits riches en prot\u00e9ines.<\/p>\n<p><strong>Alors, quand faut-il avoir un IDP relativement \u00e9lev\u00e9\u00a0?<\/strong>\u00a0 Cela d\u00e9pend de ce que vous faites.\u00a0 Par exemple, si vous cherchez \u00e0 produire des ingr\u00e9dients \u00e0 base de prot\u00e9ines textur\u00e9es, qui <a href=\"https:\/\/www.insta-pro.com\/en\/blog\/nutritionandtechnologies\/textured-soy-protein-tsp-part-1\/\">servent de substitut partiel ou total \u00e0 la viande<\/a>, la farine doit contenir des prot\u00e9ines encore relativement fonctionnelles.\u00a0 Si l\u2019on <a href=\"https:\/\/www.insta-pro.com\/en\/blog\/nutritionandtechnologies\/versatility-in-extrusion-using-the-ms3000-extruder-for-various-applications\/\">extrude de la farine de soja afin d\u2019obtenir des prot\u00e9ines de soja textur\u00e9es<\/a>, les IDP des farines sont g\u00e9n\u00e9ralement entre 25 et 50\u00a0%.<\/p>\n<p><strong>Quand faut-il pr\u00e9f\u00e9rer un IDP relativement bas\u00a0?<\/strong>\u00a0 Un IDP r\u00e9duit est n\u00e9cessaire lorsqu\u2019un ingr\u00e9dient sert principalement, voire uniquement, \u00e0 apporter des prot\u00e9ines dans un r\u00e9gime alimentaire.\u00a0 Un autre exemple avec le soja\u00a0: les graines de soja non transform\u00e9es <a href=\"https:\/\/www.insta-pro.com\/en\/blog\/nutritionandtechnologies\/why-extrude-soybeans\/\">n\u00e9cessitent un traitement thermique pouss\u00e9<\/a> pour maximiser leur valeur nutritionnelle, et si l\u2019on utilise les techniques appropri\u00e9es, telles que l\u2019extrusion \u00e0 sec \u00e0 cisaillement \u00e9lev\u00e9, l\u2019IDP du tourteau obtenu peut ( et est cens\u00e9) baisser \u00e0 15\u00a0%, voire moins.\u00a0 Dans ce cas, le niveau de fonctionnalit\u00e9 des prot\u00e9ines peut rester bas, car l\u2019ingr\u00e9dient soja sert \u00e0 apporter des acides amin\u00e9s, et non \u00e0 \u00eatre transform\u00e9 en produit textur\u00e9.<\/p>\n<p>Par cons\u00e9quent, n\u2019h\u00e9sitez pas \u00e0 nous parler de vos besoins\u00a0; nous pouvons vous aider \u00e0 atteindre vos objectifs en donnant \u00e0 vos ingr\u00e9dients le degr\u00e9 de fonctionnalit\u00e9 des prot\u00e9ines requis (tel que mesur\u00e9 par l\u2019IDP).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quel est le degr\u00e9 de fonctionnalit\u00e9 des prot\u00e9ines dans vos produits\u00a0?\u00a0 Comment le d\u00e9terminer\u00a0?\u00a0 Est-ce important pour atteindre vos objectifs\u00a0? On nous pose parfois ces questions, et bien qu\u2019il n\u2019y ait pas de r\u00e9ponse universelle, il est int\u00e9ressant de comprendre le principe de la fonctionnalit\u00e9 des prot\u00e9ines.\u00a0 En fonction de votre activit\u00e9, le plus important [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":13465,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7181],"tags":[8207,886,557],"class_list":["post-13511","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nutrition-et-technologies","tag-idp","tag-protein-fr","tag-soja"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.2 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>FONCTIONNALIT\u00c9 DES PROT\u00c9INES\u00a0: QU\u2019EST-CE QUE CELA VEUT DIRE, ET QUELLE EST SON IMPORTANCE\u00a0? - Insta-Pro<\/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:\/\/instapro.spinuhost.com\/fr\/blog\/nutrition-et-technologies\/fonctionnalite-des-proteines-quest-ce-que-cela-veut-dire-et-quelle-est-son-importance\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FONCTIONNALIT\u00c9 DES PROT\u00c9INES\u00a0: QU\u2019EST-CE QUE CELA VEUT DIRE, ET QUELLE EST SON IMPORTANCE\u00a0?\" \/>\n<meta property=\"og:description\" content=\"Quel est le degr\u00e9 de fonctionnalit\u00e9 des prot\u00e9ines dans vos produits\u00a0?\u00a0 Comment le d\u00e9terminer\u00a0?\u00a0 Est-ce important pour atteindre vos objectifs\u00a0? 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