IiTheaflavins (iiTF)kwayeIiThearubigins (TRs)ngamaqela amabini ahlukeneyo eekhompawundi ze-polyphenolic ezifumaneka kwiti emnyama, nganye ineekhemikhali kunye neempawu zayo ezikhethekileyo. Ukuqonda umahluko phakathi kwezi khompawundi kubalulekile ekuqondeni igalelo lazo kwiimpawu kunye neenzuzo zempilo zeti emnyama. Eli nqaku lijolise ekunikeni uphando olupheleleyo lokungafani phakathi kweTheaflavins kunye neThearubigins, oluxhaswa bubungqina obuvela kuphando olufanelekileyo.
IiTheaflavins kunye neeThearubigins zombini ziiflavonoids ezinegalelo kumbala, incasa, kunye nomzimba weti.IiTheaflavins ziorenji okanye zibomvu, kwaye iiThearubigins zibomvu-mdakaIiTheaflavins zezona flavonoids zokuqala eziphumayo ngexesha le-oxidation, ngelixa iiThearubigins ziphuma kamva. IiTheaflavins zinegalelo ekuqineni kweti, ekukhanyeni kwayo, nasekukhanyeni kwayo, ngelixa iiThearubigins zinegalelo kumandla ayo kunye nokuvakala komlomo.
IiTheaflavins ziluhlu lweekhompawundi zepolyphenolic ezinegalelo kumbala, incasa, kunye neempawu zokukhuthaza impilo zeti emnyama. Zenziwa ngokunyibilikisa i-oxidative yee-catechins ngexesha lenkqubo yokubilisa amagqabi eti. IiTheaflavins zaziwa ngeziphumo zazo zokulwa ne-antioxidant kunye nokulwa nokuvuvukala, eziye zanxulunyaniswa neenzuzo ezahlukeneyo zempilo, kubandakanya ukhuseleko lwentliziyo, iimpawu zokulwa nomhlaza, kunye neziphumo ezinokubakho zokulwa nokwaluphala.
Kwelinye icala,IiThearubiginsziikhompawundi ezinkulu ze-polyphenolic ezikwavela kwi-oxidation ye-tea polyphenols ngexesha lokubiliswa kwamagqabi eti. Zinoxanduva lombala obomvu otyebileyo kunye nencasa ephawulekayo yeti emnyama. Ii-Thearubigins zinxulunyaniswa neempawu ze-antioxidant, anti-inflammatory, kunye ne-properties zokukhusela ulusu, nto leyo eyenza ukuba zibe yinto enomdla kwicandelo lokulwa nokwaluphala kunye nokhathalelo lolusu.
Ngokwekhemikhali, iiTheaflavins zahlukile kwiiThearubigins ngokwesakhiwo sazo semolekyuli kunye nokwakheka kwazo. IiTheaflavins ziikhompawundi ze-dimeric, oko kuthetha ukuba indibaniselwano yeeyunithi ezimbini ezincinci ziyazenza, ngelixa iiThearubigins ziikhompawundi ezinkulu zepolymeric ezivela kwi-polymerization yee-flavonoids ezahlukeneyo ngexesha lokubiliswa kweti. Oku kwahluka kwesakhiwo kunegalelo kwimisebenzi yazo eyahlukeneyo yebhayoloji kunye nemiphumo enokubakho yempilo.
| IiTheaflavins | IiThearubigins | |
| Umbala | Iorenji okanye ebomvu | Ubomvu-mdaka |
| Igalelo kwiti | Ukukhanya, ukukhanya, kunye nokukhanya | Amandla kunye nokuva umlomo |
| Ulwakhiwo lweekhemikhali | Ichazwe kakuhle | Ayifani kwaye ayaziwa |
| Ipesenti yobunzima obomileyo kwiti emnyama | 1–6% | 10–20% |
IiTheaflavins zezona qela liphambili leekhompawundi ezisetyenziselwa ukuvavanya umgangatho weti emnyama. Umlinganiselo wetheaflavins kwithearubigins (TF:TR) kufuneka ube yi-1:10 ukuya kwi-1:12 kwiti emnyama esemgangathweni ophezulu. Ixesha lokubila libaluleke kakhulu ekugcineni umlinganiselo weTF:TR.
IiTheaflavins kunye neethearubigins ziimveliso ezikhethekileyo ezenziwe kwiicatechins ngexesha le-enzymatic oxidation yeti ngexesha lokwenziwa kwayo. IiTheaflavins zinika iti umbala o-orenji okanye obomvu-orenji kwaye zinegalelo kwimvakalelo yomlomo kunye nobukhulu bokwakheka kwekhrimu. Ziikhompawundi ze-dimeric ezine-skeleton ye-benzotropolone eyenziwe yi-co-oxidation yeebini ezikhethiweyo zeecatechins. I-oxidation yendandatho ye-B ye-(−)-epigallocatechin okanye (−)-epigallocatechin gallate ilandelwa kukulahlekelwa yi-CO2 kunye nokudibana ngaxeshanye nendandatho ye-B ye-(−)-epicatechin okanye (−)-epicatechin gallate molecule (Umfanekiso 12.2). Iitheaflavins ezine eziphambili zichongiwe kwiti emnyama: i-theaflavin, i-theaflavin-3-monogallate, i-theaflavin-3′-monogallate, kunye ne-theaflavin-3,3′-digallate. Ukongeza, ii-stereoisomers kunye nee-derivatives zazo zinokubakho. Kutshanje, kuye kwaxelwa ukuba kukho i-theaflavin trigallate kunye ne-tetragallate kwiti emnyama (Chen et al., 2012). Ii-theaflavins zinokungcoliswa ngakumbi. Kusenokwenzeka ukuba zikwangabona baphambili bokwenziwa kwee-polymeric thearubigins. Nangona kunjalo, indlela yokusabela ayaziwa ukuza kuthi ga ngoku. Ii-Thearubigins zii-pigment ezibomvu-mdaka okanye ezimnyama-mdaka kwiti emnyama, umxholo wazo ufikelela kwi-60% yobunzima obomileyo bokufakwa kweti.
Ngokuphathelele iingenelo zempilo, iiTheaflavins zifundwe ngokubanzi ngendima yazo enokubakho ekukhuthazeni impilo yentliziyo. Uphando lubonise ukuba iiTheaflavins zinokunceda ukunciphisa amanqanaba e-cholesterol, ukuphucula ukusebenza kwemithambo yegazi, kunye neziphumo zokulwa nokudumba, zonke eziluncedo kwimpilo yentliziyo. Ukongeza, iiTheaflavins zibonakalise amandla okuthintela ukukhula kweeseli zomhlaza kwaye zinokuba neempawu zokulwa nesifo seswekile.
Kwelinye icala, iiThearubigins zinxulunyaniswa nemiphumo ye-antioxidant kunye ne-anti-inflammatory, ebalulekileyo ekulweni noxinzelelo lwe-oxidative kunye nokuvuvukala emzimbeni. Ezi mpawu zinokuba negalelo kwimiphumo enokubakho yokulwa nokwaluphala kunye nokukhusela ulusu yeThearubigins, nto leyo eyenza ukuba ibe yinto enomdla kukhathalelo lolusu kunye nophando olunxulumene nobudala.
Ukuqukumbela, iiTheaflavins kunye neeThearubigins ziikhompawundi ezahlukeneyo zepolyphenolic ezifumaneka kwiti emnyama, nganye ineekhemikhali ezikhethekileyo kunye neenzuzo ezinokubakho kwimpilo. Nangona iiTheaflavins zinxulunyaniswe nempilo yentliziyo, iipropati zokulwa nomhlaza, kunye nemiphumo enokubakho yokulwa nesifo seswekile, iiThearubigins zinxulunyaniswe neepropati ze-antioxidant, anti-inflammatory, kunye ne-ekhusela ulusu, nto leyo eyenza ukuba zibe yinto enomdla kuphando lokulwa nokwaluphala kunye nokhathalelo lolusu.
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Ixesha leposi: Meyi-11-2024
