Theaflavins (TFs)kwayeThearubigins (TRs)ngamaqela amabini ahlukeneyo eekhompawundi zepolyphenolic ezifumaneka kwiti emnyama, ngalinye linemixube yeekhemikhali ezikhethekileyo kunye neempawu. Ukuqonda umahluko phakathi kwezi khompawundi kubalulekile ekuqondeni igalelo labo ngabanye kwiimpawu kunye neenzuzo zempilo zeti emnyama. Eli nqaku lijolise ekunikeni uphando olubanzi lokungafani phakathi kweTheaflavins kunye neThearubigins, exhaswa bubungqina obuvela kuphando olufanelekileyo.
I-Theaflavins kunye ne-thearubigins zombini ii-flavonoids ezinegalelo kumbala, incasa, kunye nomzimba weti.I-Theaflavins ziorenji okanye zibomvu, kwaye i-thearubigins zibomvu-mdaka. I-Theaflavins zii-flavonoids zokuqala ezivela ngexesha le-oxidation, ngelixa i-thearubigins ivela kamva. I-Theaflavins inegalelo kwi-astringency yeti, ukuqaqamba, kunye nokukhawuleza, ngelixa i-thearubigins inegalelo kumandla kunye nokuvakala komlomo.
I-Theaflavins yiklasi yeekhompawundi ze-polyphenolic ezinegalelo kumbala, incasa, kunye neempawu zokukhuthaza impilo yeti emnyama. Zenziwa nge-oxidative dimerization ye-catechin ngexesha lenkqubo yokuvutshelwa kwamagqabi eti. I-Theaflavins iyaziwa ngokuba yi-antioxidant kunye ne-anti-inflammatory effects, eziye zadibaniswa neenzuzo ezahlukeneyo zempilo, ezibandakanya ukukhuselwa kwentliziyo, iipropati ezichasayo zomhlaza, kunye nemiphumo enokuchasana nokuguga.
Kwelinye icala,Thearubiginszikhompawundi ezinkulu ze-polyphenolic eziphuma kwi-oxidation ye-polyphenols yeti ngexesha lokubiliswa kwamagqabi eti. Bajongene nombala obomvu ocebileyo kunye nencasa yeempawu zetiyi emnyama. I-Thearubigins iye yadibaniswa ne-antioxidant, i-anti-inflammatory, kunye neempawu zokukhusela ulusu, zibenza babe ngumxholo onomdla kwintsimi yokuchasana nokuguga kunye ne-skincare.
Ngokwemichiza, i-Theaflavins yahlukile kwi-Thearubigins ngokubhekiselele kwisakhiwo sabo se-molecular kunye nokwakheka. I-Theaflavins ziikhompawundi ze-dimeric, oku kuthetha ukuba indibaniselwano yeeyunithi ezimbini ezincinci ziyazenza, ngelixa i-Thearubigins zikhompawundi ezinkulu zepolymeric eziphuma kwipolymerization yeeflavonoids ezahlukeneyo ngexesha lokubiliswa kweti. Oku kungafani kolwakhiwo kunegalelo kwimisebenzi eyahlukeneyo yebhayoloji kunye neziphumo zempilo ezinokubakho.
| Theaflavins | Thearubigins | |
| Umbala | I-Orenji okanye ebomvu | Bubomvu-mdaka |
| Igalelo kwiti | I-Astringency, ukukhanya, kunye nokukhawuleza | Amandla kunye nokuziva komlomo |
| Ubume beMichiza | Ichazwe kakuhle | Ayifani kwaye ayaziwa |
| Ipesenti yesisindo esomileyo kwitiyi emnyama | 1–6% | 10–20% |
I-Theaflavins lelona qela liphambili leekhompawundi ezisetyenziselwa ukuhlola umgangatho weti emnyama. Umlinganiselo we theaflavins ukuya kwi thearubigins (TF:TR) kufuneka ibeyi 1:10 ukuya ku 1:12 kwiti emnyama ekumgangatho ophezulu. Ixesha lokuvundisa ngumba ongundoqo ekugcineni umlinganiselo we-TF:TR.
I-Theaflavins kunye ne-thearubigins ziimveliso ezibonakalayo ezenziwe kwiikatekhini ngexesha le-enzymatic oxidation yeti ngexesha lokwenziwa. I-Theaflavins inika umbala o-orenji okanye o-orenji-bomvu kwiti kwaye inegalelo kwimvakalelo yomlomo kunye nobungakanani bokwakheka kwekhrimu. Ziikhompawundi ze-dimeric ezine-benzotropolone skeleton eyenziwe kwi-co-oxidation yeeperi ezikhethiweyo zeekatekins. I-oxidation yeringi ye-B nokuba yi-(-)-epigallocatechin okanye (-)-epigallocatechin gallate ilandelwa kukulahleka kweCO2 kunye nokudityaniswa kwangaxeshanye nesangqa esingu-B se-(-)-epicatechin okanye (-)-epicatechin gallate molekyuli (Figure 12. ). Iitheaflavins ezine ezinkulu zichongiwe kwiti emnyama: theaflavin, theaflavin-3-monogallate, theaflavin-3′-monogallate, kunye netheaflavin-3,3′-digallate. Ukongeza, ii-stereoisomers zabo kunye nezinto eziphuma kuzo zinokubakho. Kutshanje, ubukho be-theaflavin trigallate kunye ne-tetragallate kwiti emnyama kuye kwabikwa (Chen et al., 2012). I-theaflavins inokuphinda ifakwe i-oxidized. Mhlawumbi zikwangabo bangaphambili bokwenziwa kwe-polymeric thearubigins. Nangona kunjalo, indlela yokusabela ayaziwa ukuza kuthi ga ngoku. I-Thearubigins i-pigment ebomvu-ebomvu okanye i-dark-brown kwi-tea emnyama, i-akhawunti yazo i-akhawunti ukuya kuthi ga kwi-60% yobunzima obomileyo be-tea infusion.
Ngokumalunga neenzuzo zempilo, iTheaflavins ifundwe ngokubanzi ngendima yabo enokubakho ekukhuthazeni impilo yentliziyo. Uphando lucebise ukuba i-Theaflavins inokunceda ukunciphisa amanqanaba e-cholesterol, iphucule ukusebenza kwemithambo yegazi, kwaye isebenzise iziphumo ezichasayo, zonke eziluncedo kwimpilo yentliziyo. Ukongeza, i-Theaflavins ibonise amandla okuthintela ukukhula kweeseli zomhlaza kwaye inokuba neempawu ezichasene nesifo seswekile.
Ngakolunye uhlangothi, i-Thearubigins inxulunyaniswe ne-antioxidant kunye ne-anti-inflammatory effects, ebalulekileyo ekulweni noxinzelelo lwe-oxidative kunye nokuvuvukala emzimbeni. Ezi zakhiwo zinokuthi zibe negalelo kwimiphumo enokuchasana nokuguga kunye nokukhusela ulusu lwe-Thearubigins, okwenza kube ngumxholo onomdla kwi-skincare kunye nophando olunxulumene neminyaka.
Ukuqukumbela, iTheaflavins kunye neThearubigins ziikhompawundi zepolyphenolic ezahlukileyo ezifumaneka kwiti emnyama, nganye inemixholo yeekhemikhali ezizodwa kunye neenzuzo zempilo ezinokubakho. Ngelixa i-Theaflavins idityaniswe nempilo ye-cardiovascular, i-anti-cancer properties, kunye ne-anti-diabetes, i-Thearubigins iye yadibaniswa ne-antioxidant, i-anti-inflammatory, kunye nepropathi yokukhusela ulusu, eyenza ibe yinto enomdla kwi-anti-aging and skincare. uphando.
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Khan N, Mukhtar H. Tea polyphenols ukukhuthaza impilo. Ubomi beSayensi. 2007;81(7):519-533.
Mandel S, Youdim MB. I-Catechin polyphenols: i-neurodegeneration kunye ne-neuroprotection kwizifo ze-neurodeergenerative. I-Radic Biol Med yasimahla. 2004;37(3):304-17.
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Ixesha lokuposa: May-11-2024
