{"id":4624,"date":"2024-08-04T15:03:19","date_gmt":"2024-08-04T15:03:19","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=4624"},"modified":"2024-08-04T15:03:19","modified_gmt":"2024-08-04T15:03:19","slug":"chitin","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/fr\/chitin\/","title":{"rendered":"Optimisation du processus d'extraction de la chitine de la mue de cigale et \u00e9valuation de son activit\u00e9 antioxydante et de son effet h\u00e9mostatique"},"content":{"rendered":"<p>Optimisation du processus d'extraction de la chitine de la mue de cigale et \u00e9valuation de son activit\u00e9 antioxydante et de son effet h\u00e9mostatique<br \/>\nLa chitine, \u00e9galement connue sous le nom de chitosane, est un biopolysaccharide macromol\u00e9culaire lin\u00e9aire compos\u00e9 d'unit\u00e9s N-ac\u00e9tyl-2-amino-2-d\u00e9soxy-D-glucopyranose reli\u00e9es par des liaisons \u03b2 -1,4-glycosidiques. Il s'agit d'un solide semi-transparent en forme de feuille et, en raison de la liaison hydrog\u00e8ne entre les cha\u00eenes de polysaccharides, la chitine est insoluble dans l'eau, les acides dilu\u00e9s, les bases dilu\u00e9es ou les solvants organiques g\u00e9n\u00e9raux. La chitine est largement pr\u00e9sente dans les carapaces des arthropodes inf\u00e9rieurs et des insectes, ainsi que dans les parois cellulaires de certaines algues et de certains champignons, tant dans les environnements marins que terrestres. Les m\u00e9thodes d'extraction comprennent les m\u00e9thodes acido-basiques, l'hydrolyse enzymatique, l'EDTA, la fermentation microbienne et les liquides ioniques. La chitine a des activit\u00e9s biologiques telles que les activit\u00e9s antioxydantes, h\u00e9mostatiques, antibact\u00e9riennes, antitumorales, hypoglyc\u00e9miques, hypotensives, hypolipid\u00e9miantes et la r\u00e9gulation immunitaire. Gr\u00e2ce \u00e0 sa non-toxicit\u00e9, sa bonne biocompatibilit\u00e9, sa biod\u00e9gradabilit\u00e9 et sa capacit\u00e9 de d\u00e9gradation enzymatique, elle est largement utilis\u00e9e dans les domaines biom\u00e9dicaux tels que l'administration de m\u00e9dicaments, l'ing\u00e9nierie tissulaire, la cicatrisation des plaies et le traitement du cancer.<br \/>\nLe Periostracum Cicadae, \u00e9galement connu sous le nom de Cicadae, est la coquille de mue de l'insecte de la famille des cigales, la sauterelle noire, apr\u00e8s l'\u00e9closion. Sa composition chimique comprend principalement de la chitine, des prot\u00e9ines, des sels inorganiques, des acides amin\u00e9s, des oligo-\u00e9l\u00e9ments, etc. En tant que m\u00e9dicament traditionnel chinois couramment utilis\u00e9, elle a pour effet de disperser le vent et la chaleur, de soulager la gorge, de p\u00e9n\u00e9trer les \u00e9ruptions cutan\u00e9es, de soulager les spasmes, d'am\u00e9liorer la vision et de soulager les opacit\u00e9s. Des \u00e9tudes ont montr\u00e9 que la mue de cigale, en tant que source alternative de chitine, pr\u00e9sente un faible degr\u00e9 d'ac\u00e9tylation, une cristallinit\u00e9, des propri\u00e9t\u00e9s thermiques et une bonne s\u00e9curit\u00e9 \u00e9cologique. Toutefois, en raison du prix \u00e9lev\u00e9 de la mue de cigale et de l'absence de normes de qualit\u00e9 fixes pour la chitine, les progr\u00e8s de la recherche sur la chitine de la mue de cigale sont actuellement lents. Cette \u00e9tude a utilis\u00e9 une m\u00e9thode acide-base traditionnelle assist\u00e9e par ultrasons pour extraire la chitine des mues de cigale, a raccourci le cycle d'extraction et a optimis\u00e9 le processus d'extraction en utilisant un facteur unique et des exp\u00e9riences orthogonales. L'activit\u00e9 antioxydante et l'effet h\u00e9mostatique de l'extrait ont \u00e9galement \u00e9t\u00e9 d\u00e9termin\u00e9s, ce qui constitue une r\u00e9f\u00e9rence importante pour promouvoir la recherche et l'application de la chitine des mues de cigale.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4625\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/1-77.png\" alt=\"\" width=\"774\" height=\"197\" srcset=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/1-77.png 774w, https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/1-77-768x195.png 768w\" sizes=\"(max-width: 774px) 100vw, 774px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4626\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/2-67.png\" alt=\"\" width=\"775\" height=\"199\" srcset=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/2-67.png 775w, https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/2-67-768x197.png 768w\" sizes=\"(max-width: 775px) 100vw, 775px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4627\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/3-63.png\" alt=\"\" width=\"776\" height=\"196\" srcset=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/3-63.png 776w, https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/3-63-768x194.png 768w\" sizes=\"(max-width: 776px) 100vw, 776px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4628\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/4-52.png\" alt=\"\" width=\"800\" height=\"655\" srcset=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/4-52.png 800w, https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/4-52-768x629.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4629\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/5-51.png\" alt=\"\" width=\"441\" height=\"575\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4630\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/6-47.png\" alt=\"\" width=\"461\" height=\"275\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4631\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/7-44.png\" alt=\"\" width=\"464\" height=\"301\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4632\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/8-39.png\" alt=\"\" width=\"460\" height=\"282\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4633\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/9-34.png\" alt=\"\" width=\"801\" height=\"577\" srcset=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/9-34.png 801w, https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/9-34-768x553.png 768w\" sizes=\"(max-width: 801px) 100vw, 801px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4634\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/10-30.png\" alt=\"\" width=\"801\" height=\"556\" srcset=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/10-30.png 801w, https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/10-30-768x533.png 768w\" sizes=\"(max-width: 801px) 100vw, 801px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4635\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/11-27.png\" alt=\"\" width=\"807\" height=\"556\" srcset=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/11-27.png 807w, https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/11-27-768x529.png 768w\" sizes=\"(max-width: 807px) 100vw, 807px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4636\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/12-23.png\" alt=\"\" width=\"457\" height=\"256\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4637\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/13-20.png\" alt=\"\" width=\"455\" height=\"256\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4638\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/14-17.png\" alt=\"\" width=\"455\" height=\"260\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4639\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/15-13.png\" alt=\"\" width=\"455\" height=\"669\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4640\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/16-11.png\" alt=\"\" width=\"455\" height=\"304\" srcset=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/16-11.png 455w, https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/16-11-325x217.png 325w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4641\" src=\"https:\/\/longchangextracts.com\/wp-content\/uploads\/2024\/08\/17-10.png\" alt=\"\" width=\"454\" height=\"320\" \/><br \/>\nLes param\u00e8tres optimaux du processus d'extraction acido-basique de la chitine des mues de cigale assist\u00e9e par ultrasons ont \u00e9t\u00e9 obtenus par des exp\u00e9riences \u00e0 facteur unique combin\u00e9es \u00e0 des exp\u00e9riences orthogonales, y compris la d\u00e9calcification : fraction de masse : 8% acide chlorhydrique, temp\u00e9rature : temp\u00e9rature ambiante, rapport solide-liquide : 1:25, puissance des ultrasons : 160W, dur\u00e9e des ultrasons : 150min ; \u00c9limination des prot\u00e9ines : fraction de masse : 10% hydroxyde de sodium, temp\u00e9rature : 60 \u2103, rapport solide-liquide : 1:25, puissance des ultrasons : pas de diff\u00e9rence significative, dur\u00e9e des ultrasons : 90min ; D\u00e9coloration : fraction de masse : 5% permanganate de potassium, 8% bisulfite de sodium, temp\u00e9rature : 90 \u2103, dur\u00e9e : r\u00e9action au permanganate de potassium pendant 60 minutes, r\u00e9action au bisulfite de sodium pendant 90 minutes. La d\u00e9calcification et la d\u00e9prot\u00e9inisation assist\u00e9es par ultrasons augmentent la p\u00e9n\u00e9tration du solvant, ce qui raccourcit efficacement le temps d'extraction.<br \/>\nDans l'exp\u00e9rience pr\u00e9liminaire, une solution aqueuse d'hydroxyde de potassium\/ur\u00e9e a \u00e9t\u00e9 utilis\u00e9e pour la cong\u00e9lation et la d\u00e9cong\u00e9lation \u00e0 basse temp\u00e9rature afin de dissoudre la chitine de la mue de la cigale. Au cours du processus, il a \u00e9t\u00e9 constat\u00e9 que le syst\u00e8me hydroxyde de potassium\/ur\u00e9e lui-m\u00eame avait un impact significatif sur les radicaux libres. Cette \u00e9tude a examin\u00e9 l'activit\u00e9 antioxydante de la suspension de chitosane de mue de cigale. Les r\u00e9sultats ont montr\u00e9 que lorsque la concentration de la suspension de chitosane de la mue de cigale \u00e9tait de 18mg\/mL, le taux de pi\u00e9geage du radical libre ABTS \u00e9tait de 91.31%, d\u00e9montrant une forte capacit\u00e9 de pi\u00e9geage des radicaux libres ; lorsque la concentration de la suspension de chitosan de mue de cigale est de 15mg\/mL, le taux de pi\u00e9geage des radicaux libres DPPH est de 35,19% ; lorsque la concentration de la suspension de chitosan de mue de cigale est de 20mg\/mL, le taux de pi\u00e9geage des radicaux libres O2 est de 63,72%. La raison pour laquelle le chitosane pr\u00e9sente une excellente activit\u00e9 antioxydante peut \u00eatre qu'il a \u00e9t\u00e9 partiellement d\u00e9sac\u00e9tyl\u00e9 au cours du processus d'extraction acide-base.<br \/>\nLa m\u00e9thode du tube \u00e0 essai a \u00e9t\u00e9 utilis\u00e9e pour d\u00e9terminer le temps de coagulation in vitro du sang de lapin avec diff\u00e9rentes doses de poudre de chitosane. Les r\u00e9sultats ont montr\u00e9 que la capacit\u00e9 procoagulante in vitro de la poudre de chitosane de la mue de cigale augmentait avec la dose de chitosane de la mue de cigale. Compar\u00e9e \u00e0 la poudre de Yunnan Baiyao \u00e0 la m\u00eame dose, la capacit\u00e9 procoagulante in vitro de la poudre de chitosane de mue de cigale \u00e9tait significativement meilleure. La m\u00e9thode de coupe de la queue a \u00e9t\u00e9 utilis\u00e9e pour d\u00e9terminer le temps de saignement et la quantit\u00e9 de diff\u00e9rentes doses de poudre de chitosane de la mue de cigale sur des souris. Les r\u00e9sultats ont montr\u00e9 que le groupe de contr\u00f4le positif compos\u00e9 de poudre de chitosan de mue de cigale et de poudre de Yunnan Baiyao \u00e0 chaque dose pouvait r\u00e9duire de mani\u00e8re significative le temps de saignement par rapport au groupe de contr\u00f4le vierge. Par rapport \u00e0 la poudre de Yunnan Baiyao \u00e0 la m\u00eame dose, il y avait des diff\u00e9rences significatives dans le temps de saignement et la quantit\u00e9 de chitosane, ce qui indique que le chitosane de la mue de cigale a une meilleure capacit\u00e9 h\u00e9mostatique que le Yunnan Baiyao. En \u00e9tablissant un mod\u00e8le de saignement du foie de souris et en mesurant le temps de saignement de la plaie, les r\u00e9sultats ont montr\u00e9 que le chitosane de la mue de cigale pouvait r\u00e9duire de mani\u00e8re significative le temps de saignement de la plaie du foie, et que les donn\u00e9es de la m\u00eame dose de chitosane de la mue de cigale \u00e9taient meilleures que celles du contr\u00f4le positif Yunnan Baiyao. Le chitosane de la mue de cigale a un bon effet sur la promotion de la coagulation du sang dans les plaies h\u00e9morragiques des organes riches en sang dans le corps, comme le foie, et peut \u00eatre d\u00e9velopp\u00e9 comme mat\u00e9riau h\u00e9mostatique pour la r\u00e9section chirurgicale de certains organes.<\/p>","protected":false},"excerpt":{"rendered":"<p>Optimization of extraction process of chitin from cicada molt and evaluation of its antioxidant activity and hemostatic effect Chitin, also known as chitosan, is a linear macromolecule biopolysaccharide composed of N-acetyl-2-amino-2-deoxy-D-glucopyranose units connected by \u03b2 -1,4-glycosidic bonds. It is a semi transparent sheet-like solid, and due to the hydrogen bonding between polysaccharide chains, chitin is [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Optimization of extraction process of chitin from cicada molt and evaluation of its antioxidant activity and hemostatic effect - China Chemical Manufacturer<\/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:\/\/longchangextracts.com\/fr\/chitin\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Optimization of extraction process of chitin from cicada molt and evaluation of its antioxidant activity and hemostatic effect - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"Optimization of extraction process of chitin from cicada molt and evaluation of its antioxidant activity and hemostatic effect Chitin, also known as chitosan, is a linear macromolecule biopolysaccharide composed of N-acetyl-2-amino-2-deoxy-D-glucopyranose units connected by \u03b2 -1,4-glycosidic bonds. 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