{"id":188415,"date":"2026-03-02T11:27:46","date_gmt":"2026-03-02T10:27:46","guid":{"rendered":"https:\/\/www.ainia.com\/?p=188415"},"modified":"2026-03-02T11:32:58","modified_gmt":"2026-03-02T10:32:58","slug":"production-de-cyanobacteries-et-microalgues-nouvelles-sources-pour-la-production-de-composes-bioactifs-uniques","status":"publish","type":"post","link":"https:\/\/www.ainia.com\/fr\/ainia-news\/production-de-cyanobacteries-et-microalgues-nouvelles-sources-pour-la-production-de-composes-bioactifs-uniques\/","title":{"rendered":"Production de cyanobact\u00e9ries et microalgues : nouvelles sources pour la production de compos\u00e9s bioactifs uniques"},"content":{"rendered":"<html><body><div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text css=\u201d\u201d]<\/p>\n<blockquote>\n<p data-start=\"112\" data-end=\"551\">La recherche de <strong data-start=\"127\" data-end=\"170\">sources naturelles de compos\u00e9s actifs<\/strong> constitue l\u2019une des lignes de recherche les plus vastes en <strong data-start=\"227\" data-end=\"262\">biotechnologie fondamentale et appliqu\u00e9e<\/strong>. Traditionnellement, d\u2019autres plateformes microbiennes ont \u00e9t\u00e9 les principales sources stables pour la production de <strong data-start=\"371\" data-end=\"396\">compos\u00e9s bioactifs<\/strong>. Toutefois, il est n\u00e9cessaire d\u2019explorer d\u2019autres microorganismes pr\u00e9sentant des avantages en termes de <strong data-start=\"485\" data-end=\"500\">croissance<\/strong>, <strong data-start=\"502\" data-end=\"519\">adaptabilit\u00e9<\/strong> et <strong data-start=\"522\" data-end=\"550\">diversit\u00e9 chimique unique<\/strong>.<\/p>\n<\/blockquote>\n<h2 data-start=\"553\" data-end=\"1126\"><strong><span class=\"NormalTextRun SpellingErrorV2Themed SCXW43419009 BCX8\">Production<\/span><span class=\"NormalTextRun SCXW43419009 BCX8\">\u00a0de\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW43419009 BCX8\">cyanobact\u00e9ries<\/span><span class=\"NormalTextRun SCXW43419009 BCX8\">\u00a0et\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW43419009 BCX8\">microalgues<\/span><span class=\"NormalTextRun SCXW43419009 BCX8\">:\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW43419009 BCX8\">Pourquoi<\/span><span class=\"NormalTextRun SCXW43419009 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW43419009 BCX8\">s\u2019int\u00e9resser<\/span><span class=\"NormalTextRun SCXW43419009 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW43419009 BCX8\">aux<\/span><span class=\"NormalTextRun SCXW43419009 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW43419009 BCX8\">micro-organismes<\/span><span class=\"NormalTextRun SCXW43419009 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW43419009 BCX8\">phototrophes<\/span><\/strong><\/h2>\n<p data-start=\"553\" data-end=\"1126\">Les <strong data-start=\"608\" data-end=\"639\">microalgues et cyanobact\u00e9ries<\/strong> sont des organismes phototrophes capables de s\u2019adapter \u00e0 diff\u00e9rents environnements gr\u00e2ce \u00e0 un <strong data-start=\"740\" data-end=\"769\">m\u00e9tabolisme hautement efficace<\/strong>. \u00c0 partir d\u2019eux, de nombreux compos\u00e9s sont produits lors du m\u00e9tabolisme primaire et secondaire, notamment des <strong data-start=\"883\" data-end=\"894\">lipides<\/strong> (carot\u00e9no\u00efdes, acides gras om\u00e9ga-3 et 6, acides gras pouvant \u00eatre convertis en biodiesel), des <strong data-start=\"997\" data-end=\"1010\">prot\u00e9ines<\/strong> (pigments prot\u00e9iques, mycosporines), des glucides, des acides ph\u00e9noliques, des compos\u00e9s antimicrobiens, des polyk\u00e9tides, etc.<\/p>\n<p data-start=\"1128\" data-end=\"1773\">Pris ensemble, ils poss\u00e8dent de nombreuses <strong data-start=\"1161\" data-end=\"1187\">capacit\u00e9s bioactives<\/strong> qui les rendent tr\u00e8s attractifs dans diff\u00e9rents domaines, tels que le secteur <strong data-start=\"1247\" data-end=\"1263\">nutraceutique<\/strong> (compl\u00e9ments, alimentation fonctionnelle), <strong data-start=\"1303\" data-end=\"1316\">cosm\u00e9tique<\/strong>, <strong data-start=\"1318\" data-end=\"1327\">pharmaceutique<\/strong>, <strong data-start=\"1329\" data-end=\"1348\">biocarburants<\/strong>, <strong data-start=\"1350\" data-end=\"1379\">biostimulants agricoles<\/strong>, la nutrition humaine et animale et les <strong data-start=\"1412\" data-end=\"1436\">colorants naturels<\/strong>. Au sein de cette diversit\u00e9 chimique, certains compos\u00e9s bioactifs sont produits uniquement par des microorganismes phototrophes, tels que les <strong data-start=\"1559\" data-end=\"1580\">phycobiliprot\u00e9ines<\/strong>, les <strong data-start=\"1586\" data-end=\"1623\">acides gras om\u00e9ga 3 (EPA et DHA)<\/strong>, les <strong data-start=\"1629\" data-end=\"1657\">polysaccharides sulfat\u00e9s<\/strong> et les <strong data-start=\"1664\" data-end=\"1772\">antioxydants naturels les plus puissants existants : astaxanthine, fucoxanthine et leurs pr\u00e9curseurs m\u00e9taboliques<\/strong>.<\/p>\n<h3 data-start=\"1775\" data-end=\"2302\"><strong>Durabilit\u00e9 et potentiel encore \u00e0 d\u00e9couvrir<\/strong><\/h3>\n<p data-start=\"1775\" data-end=\"2302\">D\u2019autre part, leur <strong data-start=\"1848\" data-end=\"1870\">croissance rapide<\/strong>, leur <strong data-start=\"1872\" data-end=\"1897\">haute reproductibilit\u00e9<\/strong> et leur capacit\u00e9 d\u2019<strong data-start=\"1916\" data-end=\"1967\">acclimatation \u00e0 diff\u00e9rents flux r\u00e9siduels<\/strong> comme milieu nutritif font des microalgues et cyanobact\u00e9ries la source naturelle de compos\u00e9s actifs la plus <strong data-start=\"2079\" data-end=\"2104\">durable et efficace<\/strong>. En outre, seulement <strong data-start=\"2132\" data-end=\"2167\">10 % de la diversit\u00e9 taxonomique<\/strong> de ce groupe de microorganismes est connue, ce qui renforce l\u2019int\u00e9r\u00eat pour les travaux de <strong data-start=\"2248\" data-end=\"2266\">bioprospection<\/strong> dans des environnements singuliers ou extr\u00eames.<\/p>\n<p data-start=\"2304\" data-end=\"2826\">Chez AINIA, nous disposons des <strong data-start=\"2330\" data-end=\"2362\">installations et \u00e9quipements<\/strong> n\u00e9cessaires pour cultiver de nombreuses esp\u00e8ces de microalgues et cyanobact\u00e9ries \u00e0 diff\u00e9rentes \u00e9chelles, ouvrant ainsi un large \u00e9ventail de possibilit\u00e9s pour produire des <strong data-start=\"2502\" data-end=\"2527\">biomasses \u00ab sur mesure \u00bb<\/strong> ou des <strong data-start=\"2530\" data-end=\"2574\">extraits riches en compos\u00e9s d\u2019int\u00e9r\u00eat<\/strong>. De plus, l\u2019exp\u00e9rience acquise permet d\u00e9sormais de cultiver des <strong data-start=\"2636\" data-end=\"2659\">esp\u00e8ces non typiques<\/strong>, caract\u00e9ristique hautement diff\u00e9renciante qui permettrait d\u2019\u00e9largir la liste des compos\u00e9s sp\u00e9cifiques de ces groupes microbiens encore inexploit\u00e9s ou non d\u00e9couverts.<\/p>\n<h3 data-start=\"2828\" data-end=\"3225\"><strong>Axes de travail : de la recherche au transfert<\/strong><\/h3>\n<p data-start=\"2828\" data-end=\"3225\">Plus pr\u00e9cis\u00e9ment, la ligne <strong data-start=\"2926\" data-end=\"2948\">Biomasses Aquatiques<\/strong> travaille activement \u00e0 la <strong data-start=\"2980\" data-end=\"3014\">transformation et au transfert<\/strong> de l\u2019ensemble de ces connaissances, tout en renfor\u00e7ant, compl\u00e9tant et d\u00e9veloppant des voies pionni\u00e8res et innovantes avec le soutien d\u2019autres lignes. Cela peut \u00eatre traduit et class\u00e9 en diff\u00e9rents groupes chimiques d\u2019int\u00e9r\u00eat :<\/p>\n<ol data-start=\"3227\" data-end=\"5601\">\n<li data-start=\"3227\" data-end=\"3598\">\n<p data-start=\"3230\" data-end=\"3598\"><strong data-start=\"3230\" data-end=\"3275\">Production de compos\u00e9s photoprotecteurs :<\/strong> Elle est consid\u00e9r\u00e9e comme un axe structurant de la ligne Biomasses Aquatiques. Gr\u00e2ce \u00e0 la <strong data-start=\"3357\" data-end=\"3381\">polyvalence chimique<\/strong> de certains groupes de substances, ils ont \u00e9t\u00e9 \u00e9tudi\u00e9s comme extraits actifs potentiels aussi bien dans la <strong data-start=\"3476\" data-end=\"3512\">protection des cultures agricoles<\/strong> que dans la conception de <strong data-start=\"3534\" data-end=\"3562\">formulations cosm\u00e9tiques<\/strong>, avec des r\u00e9sultats tr\u00e8s prometteurs.<\/p>\n<\/li>\n<li data-start=\"3600\" data-end=\"4183\">\n<p data-start=\"3603\" data-end=\"4183\"><strong data-start=\"3603\" data-end=\"3671\">Production de pigments prot\u00e9iques issus des cyanobact\u00e9ries :<\/strong> Colorants naturels tels que la <strong data-start=\"3698\" data-end=\"3747\">phycocyanine, phyco\u00e9rythrocyanine et phyco\u00e9rythrine<\/strong>. Tous sont produits exclusivement par des cyanobact\u00e9ries des genres <em data-start=\"3821\" data-end=\"3833\">Limnospira<\/em>, <em data-start=\"3835\" data-end=\"3845\">Anabaena<\/em> et <em data-start=\"3848\" data-end=\"3856\">Nostoc<\/em>. Leur origine naturelle devrait remplacer d\u2019autres types de colorants synth\u00e9tiques dans l\u2019industrie textile ou alimentaire. De plus, leur <strong data-start=\"3987\" data-end=\"4014\">fort pouvoir antioxydant<\/strong> a \u00e9largi leur champ d\u2019applications, permettant leur utilisation comme compos\u00e9s actifs en nutrition, cosm\u00e9tique et dans le traitement de certaines maladies chroniques.<\/p>\n<\/li>\n<li data-start=\"4185\" data-end=\"4901\">\n<p data-start=\"4188\" data-end=\"4901\"><strong data-start=\"4188\" data-end=\"4266\">Production de polysaccharides, prot\u00e9ines, acides amin\u00e9s, compos\u00e9s ph\u00e9noliques :<\/strong> Les plateformes biotechnologiques pour la production de <strong data-start=\"4321\" data-end=\"4347\">prot\u00e9ines alternatives<\/strong> constituent l\u2019autre axe central de la ligne Biomasses Aquatiques. Le <strong data-start=\"4409\" data-end=\"4439\">fort contenu prot\u00e9ique<\/strong> et leur profil en acides amin\u00e9s, tr\u00e8s \u00e9quilibr\u00e9 sur le plan nutritionnel, positionnent les microalgues comme une source prometteuse pour la nutrition humaine et animale. Par ailleurs, les <strong data-start=\"4618\" data-end=\"4667\">polysaccharides extracellulaires et intracellulaires<\/strong> pr\u00e9sentent des propri\u00e9t\u00e9s \u00e9paississantes, antioxydantes et bioactives, tandis que les <strong data-start=\"4747\" data-end=\"4771\">compos\u00e9s ph\u00e9noliques<\/strong>, bien que g\u00e9n\u00e9ralement pr\u00e9sents en plus faibles concentrations, pr\u00e9sentent une forte capacit\u00e9 antioxydante et un potentiel bioactif.<\/p>\n<\/li>\n<li data-start=\"4903\" data-end=\"5601\">\n<p data-start=\"4906\" data-end=\"5601\"><strong data-start=\"4906\" data-end=\"4976\">Production de pigments apolaires via les microalgues (eucaryotes) :<\/strong> Cette section regroupe les compos\u00e9s actifs pr\u00e9sentant la plus grande diversit\u00e9 et le plus large \u00e9ventail d\u2019applications. Il s\u2019agit \u00e9galement du groupe le plus \u00e9tudi\u00e9 et o\u00f9 la ligne Biomasses Aquatiques poss\u00e8de la plus grande exp\u00e9rience. Les plus importants sont certains pigments antioxydants, tels que l\u2019<strong data-start=\"5239\" data-end=\"5278\">astaxanthine, le b\u00eata-carot\u00e8ne, la lut\u00e9ine<\/strong> et des pr\u00e9curseurs m\u00e9taboliques tels que la <strong data-start=\"5310\" data-end=\"5352\">z\u00e9axanthine, la canthaxanthine et la fucoxanthine<\/strong>. \u00c0 cette fin, des strat\u00e9gies de <strong data-start=\"5400\" data-end=\"5425\">culture en deux \u00e9tapes<\/strong> ont \u00e9t\u00e9 d\u00e9velopp\u00e9es (\u00e9tape de production de biomasse et \u00e9tape de production du compos\u00e9 actif), g\u00e9n\u00e9rant des rendements \u00e9lev\u00e9s en productivit\u00e9 et une concentration optimale de pigment(s) par cellule.<\/p>\n<\/li>\n<\/ol>\n<h2 data-start=\"5603\" data-end=\"6198\"><strong><span class=\"NormalTextRun SpellingErrorV2Themed SCXW134034469 BCX8\">Production<\/span><span class=\"NormalTextRun SCXW134034469 BCX8\">\u00a0de\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW134034469 BCX8\">cyanobact\u00e9ries<\/span><span class=\"NormalTextRun SCXW134034469 BCX8\">\u00a0et\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW134034469 BCX8\">microalgues<\/span><span class=\"NormalTextRun SCXW134034469 BCX8\">:\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW134034469 BCX8\">Impact<\/span><span class=\"NormalTextRun SCXW134034469 BCX8\">\u00a0et\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW134034469 BCX8\">prochaines<\/span><span class=\"NormalTextRun SCXW134034469 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW134034469 BCX8\">\u00e9tapes<\/span><span class=\"NormalTextRun SCXW134034469 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW134034469 BCX8\">avec<\/span><span class=\"NormalTextRun SCXW134034469 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW134034469 BCX8\">l\u2019industrie<\/span><\/strong><\/h2>\n<p data-start=\"5603\" data-end=\"6198\">En r\u00e9sum\u00e9, la ligne Biomasses Aquatiques travaille \u00e0 <strong data-start=\"5737\" data-end=\"5798\">\u00e9tudier, d\u00e9couvrir et mettre en \u0153uvre des technologies innovantes<\/strong> pour la production de compos\u00e9s actifs dans les microalgues et cyanobact\u00e9ries. Gr\u00e2ce \u00e0 l\u2019ensemble des connaissances et de l\u2019exp\u00e9rience acquises, des voies de collaboration interne et des <strong data-start=\"5993\" data-end=\"6049\">voies de transfert de connaissances et de collaboration externe<\/strong> avec des entreprises et d\u2019autres entit\u00e9s sont d\u00e9finies. Cela se traduit par un meilleur <strong data-start=\"6110\" data-end=\"6150\">positionnement technologique d\u2019AINIA<\/strong> et par des avanc\u00e9es dans divers secteurs d\u2019int\u00e9r\u00eat.<\/p>\n<p>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div><\/body><\/html>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text css=\u201d\u201d] La recherche de sources naturelles de compos\u00e9s actifs constitue l\u2019une des lignes de recherche les plus vastes en biotechnologie fondamentale et appliqu\u00e9e. Traditionnellement, d\u2019autres plateformes microbiennes ont \u00e9t\u00e9 les principales sources stables pour la production de compos\u00e9s bioactifs. Toutefois, il est n\u00e9cessaire d\u2019explorer d\u2019autres microorganismes pr\u00e9sentant des avantages en termes de croissance, adaptabilit\u00e9 [&hellip;]<\/p>\n","protected":false},"author":900,"featured_media":176587,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1976],"tags":[],"class_list":["post-188415","post","type-post","status-publish","format-standard","hentry","category-innovation-technologique"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Production de cyanobact\u00e9ries et microalgues<\/title>\n<meta name=\"description\" content=\"La production de cyanobact\u00e9ries ouvre de nouvelles opportunit\u00e9s en biotechnologie pour obtenir des pigments, prot\u00e9ines et compos\u00e9s bioactifs durables \u00e0 haute valeur 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