Theaflavins (TFs)iyoThearubigins (TRs)waa laba kooxood oo kala duwan oo xeryahooda polyphenolic ah oo laga helo shaaha madow, mid walbana wuxuu leeyahay walxo kiimiko oo gaar ah. Fahamka faraqa u dhexeeya xeryahooda ayaa lama huraan u ah fahamka wax ku biirintooda shakhsi ahaaneed ee sifooyinka iyo faa'iidooyinka caafimaad ee shaaha madow. Maqaalkani waxa uu ujeedkiisu yahay in uu bixiyo sahan dhammaystiran oo ku saabsan faraqa u dhexeeya Theaflavins iyo Thearubigins, oo ay taageerayaan caddaynta cilmi-baarista khuseeya.
Theaflavins iyo thearubigins waa labadaba flavonoids kuwaas oo gacan ka geysta midabka, dhadhanka, iyo jidhka shaaha.Theaflavins waa orange ama casaan, thearubigins waa casaan-brown. Theaflavins waa flavonoids-ka ugu horreeya ee soo baxa inta lagu jiro oksaydheynta, halka thearubigins ay soo baxaan mar dambe. Theaflavins waxay ka qayb qaataan astringinta shaaha, dhalaalka, iyo baalka, halka thearubigins ay ka qayb qaataan xooggiisa iyo dareenka afka.
Theaflavins waa nooc ka mid ah xeryahooda polyphenolic kuwaas oo gacan ka geysta midabka, dhadhanka, iyo sifooyinka caafimaadka kor u qaada ee shaaha madow. Waxay ku abuurmeen iyada oo loo marayo dimerization oksijiinta ee catechins inta lagu jiro habka halsano ee caleemaha shaaha. Theaflavins ayaa caan ku ah saamaynta antioxidant-ka iyo ka-hortagga-bararka, kuwaas oo lala xiriiriyay faa'iidooyin caafimaad oo kala duwan, oo ay ku jiraan ilaalinta wadnaha iyo xididdada, guryaha ka hortagga kansarka, iyo saamaynta suurtagalka ah ee gabowga.
Dhanka kale,Thearubiginswaa xeryahooda waaweyn ee polyphenolic kuwaas oo sidoo kale laga soo qaatay oksaydhka polyphenols shaaha inta lagu jiro halsano caleemaha shaaha. Waxay mas'uul ka yihiin midabka cas ee hodanka ah iyo dhadhanka sifaha shaaha madow. Thearubigins ayaa lala xiriiriyay antioxidant, anti-bararka, iyo guryaha-ilaalinta maqaarka, iyaga oo ka dhigaya mawduuc xiiso leh oo ku saabsan duurka ka hortagga gabowga iyo daryeelka maqaarka.
Kiimiko ahaan, Theaflavins way ka duwan yihiin Thearubigins marka loo eego qaab-dhismeedkooda molecular iyo ka kooban. Theaflavins waa xeryahooda dimeric, taasoo la micno ah isku darka laba unug oo yaryar ayaa iyaga sameeya, halka Thearubigins ay yihiin xeryahooda polymeric ka weyn oo ka dhashay polymerization ee flavonoids kala duwan inta lagu jiro halsano shaaha. Kala-duwanaanshahan qaabdhismeedku waxa uu gacan ka geystaa hawlahooda kala duwan ee bayooloji iyo saamaynta caafimaad ee iman karta.
| Theaflavins | Thearubigins | |
| Midabka | Orange ama casaan | Casaan-brown |
| Wax ku darsiga shaaha | Astringency, dhalaal, iyo baraf | Xoog iyo afka-dareen |
| Qaab dhismeedka kiimikada | Si wanaagsan loo qeexay | Heterogeneous iyo aan la garanayn |
| Boqolkiiba miisaanka qallalan ee shaaha madow | 1-6% | 10-20% |
Theaflavins waa kooxda ugu weyn ee iskudhisyada loo isticmaalo si loo qiimeeyo tayada shaaha madow. Saamiga theaflavins iyo thearubigins (TF:TR) waa inuu ahaadaa 1:10 ilaa 1:12 shaaha madow ee tayada sare leh. Waqtiga halsano waa arrin weyn oo lagu ilaalinayo saamiga TF: TR.
Theaflavins iyo thearubigins waa alaabo sifo ah oo laga sameeyay catechins inta lagu jiro oksaydhka enzymatic ee shaaha inta lagu jiro wax soo saarka. Theaflavins ayaa shaaha siiya midab oranji ama liimi-cas waxayna gacan ka geystaan dareenka afka iyo heerka samaynta kareemka. Waxay yihiin xeryahooda dimeric ee leh qalfoofka benzotropolone kaas oo ka sameysan co-oxidation ee lammaane la doortay oo catechins ah. Oksidation of B ging ee labada (-) -) - Epigallocatechin ama () - Epigallocatechin Gallate-ka waxaa ku xiga luminta CO2 iyo isku-darka isku-darka leh giraanta B ee (-) - - -) - -) - Jaantuska 12.2 ). Afar theaflavins oo waaweyn ayaa lagu aqoonsaday shaaha madow: theaflavin, theaflavin-3-monogallate, theaflavin-3′-monogallate, iyo theaflavin-3,3′-digallate. Intaa waxaa dheer, stereoisomers-yadooda iyo ka-soo-saarkooda ayaa joogi kara. Dhawaan, joogitaanka theaflavin trigallate iyo tetragallate ee shaaha madow ayaa la soo sheegay (Chen et al., 2012). Theaflavins-ka ayaa sii oksaydhaysan kara. Waxay u badan tahay inay sidoo kale horudhac u yihiin samaynta polymeric thearubigins. Si kastaba ha ahaatee, habka falcelinta lama yaqaan ilaa hadda. Thearubigins waa midab casaan-bunni ah ama midab madow-madow oo ku jira shaaha madow, waxa ku jira ayaa xisaabiya ilaa 60% miisaanka qallalan ee faleebo shaaha.
Marka la eego faa'iidooyinka caafimaadka, Theaflavins ayaa si weyn loo daraaseeyay doorkooda suurtagalka ah ee horumarinta caafimaadka wadnaha. Cilmi baaris ayaa soo jeedisay in Theaflavins laga yaabo inay gacan ka geysato dhimista heerarka kolestaroolka, hagaajinta shaqada xididdada dhiigga, iyo inay sameeyaan saameyn lid ku ah bararka, kuwaas oo dhammaantood faa'iido u leh caafimaadka wadnaha iyo xididdada. Intaa waxaa dheer, Theaflavins waxay muujiyeen suurtagalnimada in la joojiyo koritaanka unugyada kansarka waxaana laga yaabaa inay leeyihiin waxyaabo liddi ku ah sonkorowga.
Dhanka kale, Thearubigins ayaa lala xiriiriyay antioxidant iyo saameynta anti-bararka, kuwaas oo muhiim u ah la dagaallanka cadaadiska oksaydhka iyo bararka jirka. Guryahani waxa laga yaabaa inay gacan ka geystaan saamaynta ka-hortagga gabowga iyo maqaarka ee suurtogalka ah ee Thearubigins, taasoo ka dhigaysa mawduuc xiiso u leh daryeelka maqaarka iyo cilmi-baarista da'da.
Gebagebadii, Theaflavins iyo Thearubigins waa xeryahooda polyphenolic oo kala duwan oo laga helo shaaha madow, mid walbana wuxuu leeyahay ka kooban kiimiko gaar ah iyo faa'iidooyin caafimaad oo suurtagal ah. Iyadoo Theaflavins lala xiriiriyay caafimaadka wadnaha, guryaha ka hortagga kansarka, iyo saameynta suurtagalka ah ee ka hortagga sonkorowga, Thearubigins ayaa lala xiriiriyay antioxidant, anti-bararka, iyo sifooyinka maqaarka, taas oo ka dhigaysa mawduuc xiiso leh ka hortagga gabowga iyo daryeelka maqaarka. cilmi baaris.
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Waqtiga boostada: Meey-11-2024
