Codsiga ethyl cellulose ee diyaarinta daawooyinka

Ethylcellulose (EC)waa xarun polymer-synthetic semi-synthetic ah oo lagu helay ethylation of cellulose dhirta dabiiciga ah. Qaab dhismeedka molecular ee caadiga ah wuxuu ka kooban yahay unugyo gulukoos oo ku xiran β-1,4-glycosidic bonds. Sababtoo ah biocompatibility aad u fiican, sunta aan sunta ahayn, xakamaynta wanaagsan iyo ilo badan, ethyl cellulose ayaa si weyn loogu isticmaalaa diyaarinta daawooyinka, gaar ahaan warshadaha dawooyinka.

1. Astaamaha aasaasiga ah ee ethyl cellulose

Ethyl cellulose waxay leedahay bioocompatibility sare waxayna ku jiri kartaa jirka bini'aadamka muddo dheer iyada oo aan soo saarin fal-celin sun ah. Qaab dhismeedkeeda kiimikaad waxa ay siinaysaa hydrophobicity wanaagsan, xasillooni, caabbinta aashitada iyo alkali iyo qaar ka mid ah guryaha la sii daayo. Intaa waxaa dheer, ethyl cellulose waa mid aan lagu milmin biyaha, laakiin waxay ku milmaan dareerayaasha organic sida ethanol, chloroform, acetone, iwm. Qalabkani waxay siinayaan rajooyin badan oo codsi ah oo ku saabsan diyaarinta daawooyinka.

2. Codsiga ethyl cellulose ee diyaarinta daawooyinka

Goobta codsiga ee ethyl cellulose waa mid aad u ballaaran, oo daboolaya diyaargarowga afka, cirbadaha, diyaarinta dibadda iyo dhinacyo kale oo badan. Kuwa soo socda ayaa ah dhowr codsi oo ugu muhiimsan ee ethyl cellulose ee diyaarinta daawooyinka.

2.1 Diyaarinta sii deynta la xakameeyey ee dawooyinka afka laga qaato

Codsiga ugu badan ee ethyl cellulose waa sida wakiilka la xakameeyey, gaar ahaan diyaarinta la xakameeyey ee dawooyinka afka laga qaato. Dabeecadda hydrophobic iyo xakamaynta ethyl cellulose waxay ka dhigtaa walaxda sii daynta ugu fiican. Diyaargarowga sii-deynta daroogada, ethyl cellulose waxay dib u dhigi kartaa heerka sii deynta daawada iyadoo la samaynayo dahaarka filimka, taas oo lagu gaaro ujeedada sii dheereynta saameynta daroogada. Iyadoo la hagaajinayo miisaanka molecular ee ethyl cellulose, dhumucda lakabka daahan iyo nooca dareeraha la doortay, heerka sii deynta iyo habka sii deynta daawada waa la xakameyn karaa.

Ethyl cellulose waxaa badanaa loo isticmaalaa in lagu diyaariyo kiniinada sii daynta adag ee afka. Daawadu waxay ku duuduubtaa filimka ethyl cellulose. Habka sii deynta daroogada waxaa lagu xakameyn karaa bararka iyo milanka filimka iyo dhexgalka dareeraha. Marka loo eego qaababka kala duwan iyo xaaladaha habka, ethyl cellulose waxay si wax ku ool ah u xakameyn kartaa wakhtiga la sii daayo daawada, yaraynta tirada wakhtiyada qiyaasta, iyo hagaajinta u hoggaansanaanta bukaanka.

2.2 dahaarka filimka daroogada

Diyaarinta daroogada, ethyl cellulose ayaa sidoo kale caadi ahaan loo isticmaalaa daaha filimka, gaar ahaan diyaarinta adag afka sida kiniiniyada, granules iyo kaabsal. Maaddada dahaarka filimka, ethyl cellulose waxay leedahay sifooyin filim-samayn wanaagsan, jilicsanaan iyo xoog farsamo, taas oo ku siin karta ilaalinta qaybaha daroogada iyo ka hortagga daroogada inay hoos u dhigto ama ka xanaajiso mareenka caloosha iyo mindhicirka ee deegaanka acid gastric. Isla mar ahaantaana, filimka ethyl cellulose wuxuu xakameyn karaa heerka sii deynta daawada, gaar ahaan adoo hagaajinaya dhumucda filimka iyo isticmaalka dareeraha kala duwan, qaloocyada sii deynta kala duwan ayaa la gaari karaa.

Maaddada dahaarka ah, ethyl cellulose waxay sidoo kale wanaajin kartaa dhadhanka daawada, iska ilaali qadhaadhka ama raaxo la'aanta, iyo kordhinta aqbalaadda bukaanka.

2.3 Emulsion iyo diyaarinta micellar

Sababtoo ah milanka iyo dhaqdhaqaaqa dusha sare, ethyl cellulose ayaa sidoo kale si ballaaran loo isticmaalaa emulsions iyo diyaarinta micellar. Diyaarinta emulsions, ethyl cellulose, sida emulsifier iyo stabilizer, waxay si wax ku ool ah u wanaajin kartaa milanka daroogada waxayna kordhisaa waxtarka daawada. Gaar ahaan qaar ka mid ah dawooyinka dufanka ku milma, ethyl cellulose waxay kaa caawin kartaa inay si deggan u kala firdhiso daawada marxaladda aqueous, yarayso roobabka daawada ee biyaha, iyo hagaajinta bioavailability ee daroogada.

Diyaargarawyada micellar, ethyl cellulose, sida xasiliye, waxay samayn kartaa qaab dhismeedka micellar deggan ee daawada, taas oo hagaajinaysa milanka iyo bioavailability ee daroogada ee jirka, gaar ahaan daawooyinka si liidata u milmay.

2.4 Diyaarinta daawada jirka la mariyo

KimaCell®Ethyl cellulose ayaa sidoo kale si weyn loogu isticmaalaa diyaarinta daawooyinka jirka la mariyo, gaar ahaan diyaarinta boomaatada, kiriimyada, jelka iyo diyaargarowga kale. Sida dhumuc weyn, filim hore iyo xasiliye, ethyl cellulose waxay wanaajin kartaa faafinta, ku dhegganaanta iyo isku-dhafka daawooyinka jirka la mariyo. Diyaargarowga jirka sida boomaatada iyo kiriimyada, ethyl cellulose waxay hagaajin kartaa viscosity iyo xasiloonida diyaarinta, hubinta qaybinta lebiska iyo sii deynta joogtada ah ee daawada inta lagu jiro isticmaalka.

2.5 Nidaamka sidayaasha daroogada

Ethyl cellulose sidoo kale waxaa loo isticmaali karaa sida side daroogada, gaar ahaan diyaarinta nanocarriers iyo microcarriers. Ethyl cellulose waxay samayn kartaa dhismo leh molecules daroogada si ay u bixiyaan xakameyn wanaagsan oo gudbinta daawada. Nidaamyada nanocarrier, sifooyinka dusha sare ee ethyl cellulose waxaa lagu wanaajin karaa wax ka beddelka kiimikada ama daaweynta jireed si loo sii wanaajiyo rarista daroogada iyo sii deynta waxqabadka xakamaynta heerka.

3. Faa'iidooyinka iyo caqabadaha ethyl cellulose

Ka-hortagga diyaarinta daroogada, KimaCell®ethyl cellulose waxay leedahay faa'iidooyin badan. Waxay leedahay biocompatibility wanaagsan iyo biodegradability, taas oo yarayn karta saamaynta xun ee jidhka bini'aadamka; waxay si wax ku ool ah u nidaamin kartaa sii-deynta daawooyinka waxayna hagaajinaysaa saameynta daaweynta daawooyinka; Intaa waxaa dheer, farsamada farsamaynta ee cellulose ethyl waa qaan, si ballaaran loo isticmaalo, qiimo jaban, oo ku habboon wax soo saarka ballaaran. Si kastaba ha ahaatee, ethyl cellulose ayaa sidoo kale la kulma caqabado. Tusaale ahaan, marka la eego qiimaha pH-ga xad-dhaafka ah ama xaaladaha heerkulka sare, xasiloonida ethyl cellulose ayaa laga yaabaa inay hoos u dhacdo, taas oo saameyn karta saameynteeda codsigeeda deegaanno gaar ah.

Ethyl cellulosewaxay leedahay rajooyin badan oo codsi ah oo ku saabsan diyaargarowga dawooyinka, gaar ahaan dhinacyada diyaarinta-sii daynta la xakameeyey, dahaarka filimada, emulsions, iyo diyaarinta jirka. Sifooyinkeeda ugu fiican ee jireed iyo kiimiko ayaa ka dhigaya qayb aan lagama maarmaan u ah diyaarinta daawooyinka. Si kastaba ha ahaatee, codsiyada wax ku oolka ah, weli waa lagama maarmaan in la wanaajiyo oo la hagaajiyo noocyada daroogada gaarka ah iyo foomamka diyaarinta si looga gudbo caqabadaha ku jira xasilloonida, sii-deynta xakamaynta, iwm, iyo sii wanaajinta saameynta daaweynta daawooyinka iyo u hoggaansanaanta bukaanka.