{"id":8538,"date":"2024-08-14T15:45:13","date_gmt":"2024-08-14T15:45:13","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=8538"},"modified":"2024-08-14T15:45:13","modified_gmt":"2024-08-14T15:45:13","slug":"eucommia-ulmoides-polysaccharides","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/da\/eucommia-ulmoides-polysakkarider\/","title":{"rendered":"Fremstilling, strukturel karakterisering og immunmodulerende aktivitet af Eucommia ulmoides polysaccharider"},"content":{"rendered":"<p>Fremstilling, strukturel karakterisering og immunmodulerende aktivitet af Eucommia ulmoides polysaccharider<br \/>\nCerasus humilis (Bge.) Sok Det er en l\u00f8vf\u00e6ldende busk, der tilh\u00f8rer kirseb\u00e6rsl\u00e6gten Rosaceae, og som hovedsageligt er udbredt i provinser og regioner som Heilongjiang, Jilin og Liaoning. Det er en pionertr\u00e6art til skovrejsning i de t\u00f8rre omr\u00e5der i det nordvestlige Kina og et unikt frugttr\u00e6 i Kina. Frugten af Eucommia ulmoides er knaldr\u00f8d og fyldig med en s\u00e6rlig aroma og et h\u00f8jt calciumindhold. Den er kendt som \"calciumfrugten\" og er en naturlig kilde til calcium og en sundhedsfrugt. Det er ogs\u00e5 en af \"tredjegenerations funktionelle frugter\". Eucommia ulmoides-frugten er rig p\u00e5 forskellige sukkerarter, organiske syrer, aminosyrer, vitaminer og mineraler, hvilket g\u00f8r den til en frugt med h\u00f8j n\u00e6ringsv\u00e6rdi. Eucommia ulmoides er et traditionelt kinesisk medicinmateriale med medicinske og spiselige egenskaber. Polysaccharider er en type makromolekyl\u00e6r polymer med forskellige farmakologiske aktiviteter s\u00e5som immunregulering, antitumor-, anticancer-, antibakterielle og antioxidantegenskaber. I de senere \u00e5r har produkter, der er udviklet gennem dyb forarbejdning af Eucommia ulmoides-frugt, inkluderet Eucommia ulmoides-frugtjuice, t\u00f8rrede frugter, frugtvin osv. Der er dog kun f\u00e5 rapporter om forskning i Eucommia ulmoides polysaccharider. Denne artikel fokuserer p\u00e5 fremstilling af polysaccharider, strukturelle egenskaber og immunregulerende aktivitet af Eucommia ulmoides, der dyrkes p\u00e5 sandjorden i Yulin, Shaanxi-provinsen. Form\u00e5let er at tilvejebringe et teoretisk grundlag og teknisk st\u00f8tte til udvikling og udnyttelse af Eucommia ulmoides-ressourcer i Kina.<\/p>\n<p>Makrofager er vigtige b\u00e6rere til evaluering af den immunregulerende funktion af bioaktive komponenter. Makrofager ud\u00f8ver deres immunfunktion ved at udskille forskellige cytokiner s\u00e5som nitrogenoxid (NO), tumornekrosefaktor - \u03b1 (TNF - \u03b1), interleukin-6 (IL-6), interferon - \u03b2 (IFN - \u03b2), interleukin-1 (IL-1) osv. Plantepolysaccharider regulerer makrofagernes immunfunktion ved at modulere udskillelsen af cytokiner. NO, som er et vigtigt signalmolekyle, formidler forskellige biologiske funktioner i cellerne og hj\u00e6lper med at dr\u00e6be tumorceller og patogene mikroorganismer. TNF - \u03b1 kan produceres af aktiverede makrofager og kan direkte deltage i opretholdelsen af immunhomeostase, herunder inflammation, differentiering, lipidmetabolisme og apoptose. Forskning har vist, at IL-6 kan udskilles af forskellige celler og anses for at v\u00e6re den vigtigste immunregulerende mediator i forbindelse med feber under induktion af akutfaseproteinresponser. IFN - \u03b2 deltager i antiviral immunitet, reducerer T-celleproliferation, inducerer dendritisk cellev\u00e6kst, modning og aktivering og h\u00e6mmer B-celle- og T-celleapoptose. Disse cytokiner er hovedsageligt sm\u00e5 molekyleproteiner, der udskilles af immunceller, og som spiller en vigtig rolle i kroppens immun- og bet\u00e6ndelsesreaktioner. Yao et al. fandt, at mungb\u00f8nnepolysaccharider \u00f8gede frigivelsen af NO, TNF - \u03b1 og IL-6 i makrofager betydeligt. Du et al. fandt, at figenpolysaccharider i h\u00f8j grad kan fremme udskillelsen af cytotoksiske molekyler (NO) og cytokiner (TNF - \u03b1 og IL-6) samt den fagocytiske aktivitet af RAW264.7-makrofager. Ren et al. unders\u00f8gte effekten af Artemisia annua-fr\u00f8polysaccharider p\u00e5 RAW 264.7-celler og fandt, at Artemisia annua-fr\u00f8polysaccharider i v\u00e6sentlig grad kan fremme udskillelsen af NO, TNF - \u03b1, IL-6 og IFN - \u03b2 i RAW 264.7-celler. Dette stemmer overens med resultaterne fra dette eksperiment, hvor Eucommia ulmoides-polysaccharider i h\u00f8j grad kan fremme frigivelsen af NO-, TNF-\u03b1-, IL-6- og IFN-\u03b2-cytokiner i RAW 264.7-celler, hvilket indikerer, at Eucommia ulmoides-polysaccharider har immunmodulerende aktivitet.<\/p>\n<p>Vandekstraktions- og alkoholf\u00e6ldningsmetoden blev brugt til at udvinde polysaccharider fra Eucommia ulmoides, og de optimale ekstraktionsprocesbetingelser blev opn\u00e5et som f\u00f8lger: ekstraktionstemperatur p\u00e5 79 \u00b0C, ekstraktionstid p\u00e5 2 timer, v\u00e6ske til materialeforhold p\u00e5 16:1 (ml\/g), og udbyttet af polysaccharider fra Eucommia ulmoides t\u00f8rt pulver var (32,18 \u00b1 0,08)%. Polysaccharidindholdet i CHPP-1 og CHPP-2 er henholdsvis 99,16% og 99,33%. Den vigtigste monosaccharidsammens\u00e6tning og molforholdet i CHPP-1 er arabinose: galacturonsyre: galactose = 51,4:29:17,36, med en molekylv\u00e6gt p\u00e5 47,26 kDa. Den vigtigste monosaccharidsammens\u00e6tning og molforholdet i CHPP-2 er arabinose: galacturonsyre: galactose=41,81:28,24:11,68, med en molekylv\u00e6gt p\u00e5 22,94 kDa. Europa-polysakkarid er et pyranring-polysakkarid. CHPP-2 kan aktivere makrofager inden for et koncentrationsomr\u00e5de p\u00e5 20-640 \u03bc g\/mL, hvilket fremmer frigivelsen af NO, TNF - \u03b1, IL6 og IFN - \u03b2 cytokiner p\u00e5 en dosisafh\u00e6ngig m\u00e5de, hvilket indikerer, at polysaccharider fra Eucommia ulmoides har en vis immunmodulerende aktivitet.<\/p>","protected":false},"excerpt":{"rendered":"<p>Preparation, structural characterization, and immunomodulatory activity of Eucommia ulmoides polysaccharides Cerasus humilis (Bge.) Sok It is a deciduous shrub belonging to the Rosaceae cherry genus, mainly distributed in provinces and regions such as Heilongjiang, Jilin, and Liaoning. It is a pioneer tree species for afforestation in the arid areas of Northwest China and a unique [&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>Preparation, structural characterization, and immunomodulatory activity of Eucommia ulmoides polysaccharides - 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\/da\/eucommia-ulmoides-polysakkarider\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Preparation, structural characterization, and immunomodulatory activity of Eucommia ulmoides polysaccharides - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"Preparation, structural characterization, and immunomodulatory activity of Eucommia ulmoides polysaccharides Cerasus humilis (Bge.) Sok It is a deciduous shrub belonging to the Rosaceae cherry genus, mainly distributed in provinces and regions such as Heilongjiang, Jilin, and Liaoning. 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Sok It is a deciduous shrub belonging to the Rosaceae cherry genus, mainly distributed in provinces and regions such as Heilongjiang, Jilin, and Liaoning. 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