{"id":8583,"date":"2024-08-14T16:45:22","date_gmt":"2024-08-14T16:45:22","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=8583"},"modified":"2024-08-14T16:45:22","modified_gmt":"2024-08-14T16:45:22","slug":"rhubarb","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/hu\/rebarbara\/","title":{"rendered":"A rebarbara \u00f6sszes polifenol- \u00e9s \u00f6sszes antrakinon-tartalm\u00e1nak spektrum-hat\u00e1s \u00f6sszef\u00fcgg\u00e9s\u00e9nek vizsg\u00e1lata \u00e9s in vitro antioxid\u00e1ns aktivit\u00e1sa"},"content":{"rendered":"<p>A rebarbara \u00f6sszes polifenol- \u00e9s \u00f6sszes antrakinon-tartalm\u00e1nak spektrum-hat\u00e1s \u00f6sszef\u00fcgg\u00e9s\u00e9nek vizsg\u00e1lata \u00e9s in vitro antioxid\u00e1ns aktivit\u00e1sa<br \/>\nHarman 1956-ban javasolta a szabadgy\u00f6k\u00f6s \u00f6reged\u00e9s elm\u00e9let\u00e9t, amely szerint az oxidat\u00edv reakci\u00f3k a biol\u00f3giai \u00f6reged\u00e9s \u00e9s a k\u00fcl\u00f6nb\u00f6z\u0151 betegs\u00e9gek kiv\u00e1lt\u00e1s\u00e1nak f\u0151 okai. A szabad gy\u00f6k\u00f6k f\u0151k\u00e9nt a mitokondri\u00e1lis l\u00e9gz\u00e9si l\u00e1ncok elektronsziv\u00e1rg\u00e1sa sor\u00e1n keletkeznek, vagy enzimatikus reakci\u00f3k \u00e1ltal kataliz\u00e1ltak, bele\u00e9rtve az oxig\u00e9n szabad gy\u00f6k\u00f6ket \u00e9s m\u00e1s szabad gy\u00f6k\u00f6ket. Egyes hat\u00f3anyagok k\u00f6zvetlen\u00fcl vagy k\u00f6zvetve k\u00e9pesek hatni a szabadgy\u00f6k\u00f6kre, hogy visszaford\u00edts\u00e1k a testsejteket \u00e9r\u0151 oxidat\u00edv t\u00e1mad\u00e1saikat. Jelenleg az olyan szintetikus antioxid\u00e1nsok, mint a butil-hidroxianizol, a dibutil-hidroxi-metil-\u00e9ter \u00e9s a propil-gall\u00e1t mind rendelkeznek bizonyos citotoxicit\u00e1ssal. Ez\u00e9rt az \u00e9lelmiszerekb\u0151l, f\u0171szerekb\u0151l \u00e9s term\u00e9szetes term\u00e9kekb\u0151l sz\u00e1rmaz\u00f3 hat\u00e9kony \u00e9s alacsony toxicit\u00e1s\u00fa antioxid\u00e1nsok keres\u00e9se is nagy figyelmet kapott. A DPPH-m\u00f3dszer \u00e9s az ABTS-m\u00f3dszer nagy mint\u00e1k meghat\u00e1roz\u00e1s\u00e1ra \u00e9s a hidrofil \u00e9s lipofil anyagok antioxid\u00e1ns kapacit\u00e1s\u00e1nak meghat\u00e1roz\u00e1s\u00e1ra haszn\u00e1lhat\u00f3. Ez\u00e9rt sz\u00fcks\u00e9ges a hat\u00e9kony \u00e9s alacsony toxicit\u00e1s\u00fa antioxid\u00e1nsok keres\u00e9se a term\u00e9szetes term\u00e9kekb\u0151l. A rebarbara egy hagyom\u00e1nyos k\u00ednai gy\u00f3gyn\u00f6v\u00e9ny, amely a Polygonaceae n\u00f6v\u00e9nyb\u0151l Rheum palmatum L. \u00e9s Rheum tanguticum Maxim Az ex Balf. vagy a gy\u00f3gy\u00e1szati Rheum officinale Baill. sz\u00e1r\u00edtott gy\u00f6kerei \u00e9s riz\u00f3m\u00e1i f\u0151k\u00e9nt szabad \u00e9s k\u00f6t\u00f6tt antrakinon-sz\u00e1rmaz\u00e9kokat, tanninokat, stilbene glikozidokat, polifenolokat \u00e9s m\u00e1s komponenseket tartalmaznak, amelyek farmakol\u00f3giai hat\u00e1s\u00faak, p\u00e9ld\u00e1ul hasmen\u00e9scsillap\u00edt\u00f3, antibakteri\u00e1lis, v\u00e9rz\u00e9scsillap\u00edt\u00f3 \u00e9s antioxid\u00e1ns. Kor\u00e1bbi tanulm\u00e1nyok kimutatt\u00e1k, hogy az emodin -8-O - \u03b2 - D-gl\u00fckozid \u00e9s az \u00f6sszes antrakinonglikozid pozit\u00edvan korrel\u00e1l az in vitro antioxid\u00e1ns aktivit\u00e1ssal. Nyolc komponens, k\u00f6zt\u00fck a galluszsav, a katechinek vagy epikatekinek \u00e9s a 2-O-fah\u00e9j-galloil-glik\u00f3z er\u0151s foszt\u00f3 k\u00e9pess\u00e9ggel rendelkeznek az ABTS szabad gy\u00f6k\u00f6kkel szemben.<br \/>\nAz akt\u00edv vegy\u00fcletek sz\u0171r\u00e9s\u00e9nek hagyom\u00e1nyos m\u00f3dszere gyakran mag\u00e1ban foglalja az elv\u00e1laszt\u00e1st, tiszt\u00edt\u00e1st stb., ami k\u00e9ts\u00e9gtelen\u00fcl n\u00f6veli a munkaintenzit\u00e1st, valamint k\u00f6lts\u00e9ges \u00e9s id\u0151ig\u00e9nyes. Jelenleg a spektr\u00e1lis hat\u00e1skapcsolatot sz\u00e9les k\u00f6rben haszn\u00e1lj\u00e1k a hagyom\u00e1nyos k\u00ednai gy\u00f3gy\u00e1szatban a hat\u00f3anyagok sz\u0171r\u00e9s\u00e9ben. Ez az ujjlenyomat-spektrumok \u00e9s a farmakol\u00f3giai k\u00eds\u00e9rletek l\u00e9trehoz\u00e1s\u00e1ra utal, matematikai szoftverek \u00e9s sz\u00e1m\u00edt\u00f3g\u00e9pes technol\u00f3gia felhaszn\u00e1l\u00e1s\u00e1val a \"spektrumok\" \u00e9s a \"hat\u00e1sok\" \u00f6sszekapcsol\u00e1s\u00e1ra. Ez a m\u00f3dszer \u00f6sszhangban van a hagyom\u00e1nyos k\u00ednai orvosl\u00e1s elm\u00e9leti rendszer\u00e9vel, \u00e9s p\u00f3tolja a k\u00e9miai ujjlenyomat-spektrumok hi\u00e1nyoss\u00e1gait a hagyom\u00e1nyos k\u00ednai orvosl\u00e1s min\u0151s\u00e9g\u00e9nek ellen\u0151rz\u00e9s\u00e9ben. A hagyom\u00e1nyos k\u00ednai gy\u00f3gy\u00e1szat ujjlenyomat-spektrumainak min\u0151s\u00e9gi \u00e9s mennyis\u00e9gi jellemz\u0151i \u00e9s a k\u00ednai gy\u00f3gy\u00e1szati anyagok biol\u00f3giai aktivit\u00e1si kutat\u00e1si eredm\u00e9nyei k\u00f6z\u00f6tti \u00f6sszef\u00fcgg\u00e9s felhaszn\u00e1lhat\u00f3 a k\u00ednai gy\u00f3gy\u00e1szati anyagok min\u0151s\u00e9g\u00e9nek \u00e9rt\u00e9kel\u00e9s\u00e9re szolg\u00e1l\u00f3 matematikai kifejez\u00e9s l\u00e9trehoz\u00e1s\u00e1ra. Ez\u00e9rt ez a tanulm\u00e1ny HPLC-m\u00f3dszerrel \u00e1llap\u00edtott meg egy \"spektrumot\", \u00e9s DPPH-m\u00f3dszerrel \u00e9s ABTS-m\u00f3dszerrel \u00e1llap\u00edtott meg egy in vitro antioxid\u00e1ns \"hat\u00e1st\". A rebarbara k\u00e9miai \u00f6sszet\u00e9tele \u00e9s in vitro antioxid\u00e1ns aktivit\u00e1sa k\u00f6z\u00f6tti \u00f6sszef\u00fcgg\u00e9s vizsg\u00e1lata \u00e9rdek\u00e9ben 20 t\u00e9tel rebarbara teljes polifenol-tartalm\u00e1t \u00e9s teljes antrakinon-tartalm\u00e1t hat\u00e1rozt\u00e1k meg, hogy a rebarbara potenci\u00e1lis antioxid\u00e1ns hat\u00f3anyagcsoportj\u00e1t megkapj\u00e1k.<\/p>\n<p>A rebarbara f\u0151zet 20 t\u00e9tel\u00e9nek teljes antrakinon-tartalma 1,06 \u00b1 0,08~4,82 \u00b1 0,12 mg\/g, a teljes polifenol-tartalom pedig 4,92 \u00b1 0,21~10,12 \u00b1 0,11 mg\/g. A 20 t\u00e9telnyi rebarbaraszelet n\u00e9gy kateg\u00f3ri\u00e1ba sorolhat\u00f3, nevezetesen Longxi megye \u00e9s Lintao megye, Dangchang megye \u00e9s Li megye, Min megye \u00e9s Zhang megye, valamint Weiyuan megye. A 7. (aloe emodin 8-O-gl\u00fckozid), 1., 10. (rhein), 2. \u00e9s 9. (aloe emodin) cs\u00facsok a DPPH szabad gy\u00f6k\u00f6k elnyer\u00e9s\u00e9ben, m\u00edg a 7., 2., 9., 10., 3., 8., 12. (emodin) \u00e9s 14. (emodin metil-\u00e9ter) cs\u00facsok az ABTS szabad gy\u00f6k\u00f6k elnyer\u00e9s\u00e9ben mutatnak aktivit\u00e1st. Ez \u00f6sszhangban van az in vitro antioxid\u00e1ns kromatogr\u00e1fia cs\u00facster\u00fclet\u00e9nek v\u00e1ltoz\u00e1saival, ami arra utal, hogy a rebarbara antioxid\u00e1ns hat\u00e1sa t\u00f6bb komponens egy\u00fcttes hat\u00e1s\u00e1nak eredm\u00e9nye. A 10. cs\u00facs (rein) pozit\u00edv korrel\u00e1ci\u00f3t mutatott az ABTS szabadgy\u00f6k-lebont\u00e1ssal, m\u00edg a 7. cs\u00facs (aloe emodin 8-O-gl\u00fckozid) negat\u00edv korrel\u00e1ci\u00f3t mutatott. Ennek oka lehet, hogy a k\u00f6z\u00f6s 10-es cs\u00facs (rhein) egy teljes, nagy \u03c0 - konjug\u00e1lt rendszert alkothat. Etanolos oldatban a reinkomplexek instabilak lehetnek \u00e9s hajlamosak szabad gy\u00f6k\u00f6s intermedierek kialakul\u00e1s\u00e1ra, ami magas g\u00e1tl\u00e1si ar\u00e1nyt \u00e9s pozit\u00edv korrel\u00e1ci\u00f3t eredm\u00e9nyez. A 7-es cs\u00facs (aloe emodin 8-O-gl\u00fckozid) viszonylag stabil etanolos oldatban, \u00e9s kev\u00e9sb\u00e9 val\u00f3sz\u00edn\u0171, hogy szabad gy\u00f6k\u00f6s intermediereket k\u00e9pez, ami alacsonyabb g\u00e1tl\u00e1si ar\u00e1nyt \u00e9s negat\u00edv korrel\u00e1ci\u00f3t eredm\u00e9nyez. A 2. \u00e9s a 11. cs\u00facsok k\u00f6z\u00f6tt negat\u00edv korrel\u00e1ci\u00f3 van az ABTS szabadgy\u00f6kfog\u00f3 aktivit\u00e1s tekintet\u00e9ben. Ez a k\u00e9t vegy\u00fclet nagy val\u00f3sz\u00edn\u0171s\u00e9ggel nem vagy kevesebb hidroxilcsoportot tartalmaz, amelyek akt\u00edv hidrog\u00e9nt biztos\u00edtanak. Az ABTS szabadgy\u00f6kfog\u00f3 aktivit\u00e1s a vegy\u00fclet molekul\u00e1j\u00e1nak szerkezet\u00e9t\u0151l f\u00fcgg, \u00e9s a fenolos hidroxilcsoportok sz\u00e1ma \u00e9s helyzete a f\u0151 t\u00e9nyez\u0151k, amelyek befoly\u00e1solj\u00e1k az antioxid\u00e1ns aktivit\u00e1st. Min\u00e9l t\u00f6bb akt\u00edv hidrog\u00e9nt tud biztos\u00edtani, ann\u00e1l er\u0151sebb az antioxid\u00e1ns k\u00e9pess\u00e9ge. Ez\u00e9rt ez a projekt tov\u00e1bb jav\u00edtja a fent eml\u00edtett ismeretlen k\u00f6z\u00f6s cs\u00facsok azonos\u00edt\u00e1s\u00e1t \u00e9s jellemz\u00e9s\u00e9t, hogy tov\u00e1bb tiszt\u00e1zzuk a s\u00e1rgatesteken k\u00edv\u00fcli antioxid\u00e1ns hat\u00e1s farmakol\u00f3giai alapjait.<br \/>\nEz a k\u00eds\u00e9rlet figyelembe veszi a polifenolos komponensek instabilit\u00e1s\u00e1t, \u00e9s az ultrahangos extrakci\u00f3t v\u00e1lasztja, hogy elker\u00fclje a komponensek elveszt\u00e9s\u00e9t magas h\u0151m\u00e9rs\u00e9kleti k\u00f6r\u00fclm\u00e9nyek k\u00f6z\u00f6tt. A kromatogr\u00e1fi\u00e1s cs\u00facster\u00fclet jelent\u0151s v\u00e1ltoz\u00e1s\u00e1val rendelkez\u0151 komponensek \u00f6sszehasonl\u00edt\u00e1sa, az antioxid\u00e1nsok k\u00e9s\u0151bbi ellen\u0151rz\u00e9se a monomerek folyad\u00e9kf\u00e1zis\u00fa elv\u00e1laszt\u00e1s\u00e1nak el\u0151k\u00e9sz\u00edt\u00e9s\u00e9vel t\u00f6rt\u00e9nt. LC-MS \u00e9s nukle\u00e1ris m\u00e1gneses rezonancia technik\u00e1kat alkalmaztunk az elv\u00e1lasztott term\u00e9kek azonos\u00edt\u00e1s\u00e1ra \u00e9s a szerepet j\u00e1tsz\u00f3 egyes komponensek tiszt\u00e1z\u00e1s\u00e1ra, ami szint\u00e9n a j\u00f6v\u0151beli kutat\u00e1sok ir\u00e1ny\u00e1t jelenti. A hagyom\u00e1nyos k\u00ednai gy\u00f3gy\u00e1szat ujjlenyomat-spektrum\u00e1nak min\u0151s\u00e9gi \u00e9s mennyis\u00e9gi jellemz\u0151i \u00e9s a gy\u00f3gy\u00e1szati anyagok biol\u00f3giai aktivit\u00e1s-kutat\u00e1si eredm\u00e9nyei k\u00f6z\u00f6tti korrel\u00e1ci\u00f3 felhaszn\u00e1lhat\u00f3 a hagyom\u00e1nyos k\u00ednai gy\u00f3gy\u00e1szat min\u0151s\u00e9g\u00e9nek \u00e9rt\u00e9kel\u00e9s\u00e9re szolg\u00e1l\u00f3 matematikai kifejez\u00e9s l\u00e9trehoz\u00e1s\u00e1ra. A rebarbara ujjlenyomat-t\u00e9rk\u00e9p\u00e9nek l\u00e9trehoz\u00e1sa \u00e9s a rebarbara f\u0151zetdarabok teljes antrakinon- \u00e9s teljes polifenol-tartalm\u00e1nak min\u0151s\u00e9gi \u00e9s mennyis\u00e9gi meghat\u00e1roz\u00e1sa alapj\u00e1n ez a cikk tov\u00e1bb\u00e1 meg\u00e1llap\u00edtja a s\u00e1rgatesteken k\u00edv\u00fcli antioxid\u00e1ns aktivit\u00e1s spektrum-hat\u00e1s \u00f6sszef\u00fcgg\u00e9s\u00e9t, tiszt\u00e1zza a rebarbara hat\u00e9kony csoportjait a DPPH szabadgy\u00f6k\u00f6k \u00e9s az ABTS szabadgy\u00f6k\u00f6k elsz\u00edv\u00e1s\u00e1ra, \u00e9s azonos\u00edtja a rebarbara antioxid\u00e1ns hat\u00e1st kifejt\u0151 \u00f6sszetev\u0151it, p\u00e9ld\u00e1ul a galluszsavat, az emodint \u00e9s az emodin-metil-\u00e9tert. Ez elm\u00e9leti alapot ny\u00fajt a rebarbara k\u00fcl\u00f6nb\u00f6z\u0151 r\u00e9gi\u00f3ib\u00f3l sz\u00e1rmaz\u00f3 antioxid\u00e1ns hat\u00f3anyagok sz\u0171r\u00e9s\u00e9hez \u00e9s megk\u00fcl\u00f6nb\u00f6ztet\u00e9s\u00e9hez.<\/p>","protected":false},"excerpt":{"rendered":"<p>Study on the Spectral Effect Relationship of Total Polyphenols and Total Anthraquinone Content in Rhubarb and Its In Vitro Antioxidant Activity In 1956, Harman proposed the theory of free radical aging, in which oxidative reactions are the main cause of inducing biological aging and various diseases. Free radicals are mainly generated by electron leakage from [&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>Study on the Spectral Effect Relationship of Total Polyphenols and Total Anthraquinone Content in Rhubarb and Its In Vitro Antioxidant Activity - 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\/hu\/rebarbara\/\" \/>\n<meta property=\"og:locale\" content=\"hu_HU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Study on the Spectral Effect Relationship of Total Polyphenols and Total Anthraquinone Content in Rhubarb and Its In Vitro Antioxidant Activity - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"Study on the Spectral Effect Relationship of Total Polyphenols and Total Anthraquinone Content in Rhubarb and Its In Vitro Antioxidant Activity In 1956, Harman proposed the theory of free radical aging, in which oxidative reactions are the main cause of inducing biological aging and various diseases. 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