Theaflavins (TFs)naThearubigins (TRs)bụ otu abụọ dị iche iche nke ogige polyphenolic dị na tii ojii, nke ọ bụla nwere ihe mejupụtara kemịkalụ na ihe pụrụ iche. Ịghọta ọdịiche dị n'etiti ogige ndị a dị oké mkpa maka ịghọta onyinye ha n'otu n'otu na njirimara na uru ahụike nke oji tii. Edemede a bu n'obi ịnye nyocha zuru oke nke ndịiche dị n'etiti Theaflavins na Thearubigins, nke ihe akaebe sitere na nyocha dị mkpa kwadoro.
Theaflavin na thearubigins bụ ma flavonoids na-enye aka na agba, ekpomeekpo, na ahụ tii.Theaflavin bụ oroma ma ọ bụ ọbara ọbara, na thearubigins na-acha ọbara ọbara-aja aja. Theaflavin bụ flavonoids mbụ na-apụta n'oge oxidation, ebe thearubigins na-apụta ma emechaa. Theaflavin na-enye aka na astringency tii, nchapụta, na briskness, ebe thearubigins na-enye aka n'ike na mmetụta ọnụ ya.
Theaflavins bụ otu ogige polyphenolic nke na-enye aka na agba, ekpomeekpo, na ihe na-akwalite ahụike nke tii ojii. A na-etolite ha site na dimerization oxidative nke catechins n'oge usoro ịgba ụka nke akwụkwọ tii. A maara Theaflavins maka mmetụta antioxidant ha na mgbochi mkpali, bụ nke ejikọtara na uru ahụike dị iche iche, gụnyere nchebe obi, mgbochi ọrịa cancer, na mmetụta mgbochi ịka nká.
N'akụkụ aka nke ọzọ,Thearubiginsbụ nnukwu ogige polyphenolic nke a na-enwetakwa site na oxidation nke tii polyphenols n'oge ịgba ụka nke akwụkwọ tii. Ha na-ahụ maka agba ọbara ọbara bara ụba na njirimara ekpomeekpo nke tii ojii. Ejikọtala Thearubigins na antioxidant, mgbochi mkpali, na ihe nchebe akpụkpọ anụ, na-eme ka ha bụrụ isiokwu nke mmasị na ngalaba nke mgbochi ịka nká na nlekọta anụ ahụ.
Kemịkalụ, Theaflavins dị iche na Thearubigins n'ihe gbasara usoro ha na ihe mejupụtara ya. Theaflavins bụ ogige dimeric, nke pụtara ngwakọta nke nkeji abụọ pere mpe na-etolite ha, ebe Thearubigins bụ ogige polymeric buru ibu nke sitere na polymerization nke flavonoids dị iche iche n'oge ịgbakọ tii. Ọdịiche dị n'ụdị a na-atụnye ụtụ n'omume ndu ha dị iche iche yana mmetụta ahụike nwere ike ime.
| Theaflavin | Thearubigins | |
| Agba | Orange ma ọ bụ ọbara ọbara | Red-aja aja |
| Ntụnye aka na tii | Astringency, nchapụta, na briskness | Ike na ọnụ-mmetụta |
| Ọdịdị chemical | Akọwapụtara nke ọma | Heterogeneous na amaghị |
| Pasent nke akọrọ arọ na nwa tii | 1–6% | 10-20% |
Theaflavins bụ isi otu ogige ndị a na-eji chọpụta ogo tii ojii. Oke theaflavins na thearubigins (TF:TR) kwesịrị ịbụ 1:10 ruo 1:12 maka tii ojii dị elu. Oge ịgba mmiri bụ isi ihe na-edobe oke TF: TR.
Theaflavins na thearubigins bụ ngwaahịa e ji mara sitere na catechins n'oge oxidation enzymatic nke tii n'oge nrụpụta. Theaflavin na-enye tii oroma ma ọ bụ oroma-acha ọbara ọbara ma na-enye aka na mmetụta ọnụ na oke nhazi ude. Ha bụ ogige dimeric nke nwere ọkpụkpụ benzotropolone nke emepụtara site na co-oxidation nke ụzọ abụọ catechin ahọpụtara. Oxidation nke mgbanaka B nke ma ọ bụ (-) - -epigallocatechin ma ọ bụ (-) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- gallate molecule. ). Achọpụtala theaflavin anọ bụ isi na tii ojii: theaflavin, theaflavin-3-monogallate, theaflavin-3′-monogallate, na theaflavin-3,3′-digallate. Na mgbakwunye, stereoisomers na ihe nrụpụta ha nwere ike ịdị. N'oge na-adịbeghị anya, a kọrọ ọnụnọ nke theaflavin trigallate na tetragallate na tii ojii (Chen et al., 2012). Theaflavins nwere ike ime ka oxidized ọzọ. Ha nwekwara ike bụrụ ndị na-ebute ụzọ maka ịmepụta polymeric thearubigins. Agbanyeghị, amabeghị usoro mmeghachi omume ruo ugbu a. Thearubigins bụ ọbara ọbara-agba aja aja ma ọ bụ agba aja aja na tii ojii, ọdịnaya ha ruru 60% nke oke akọrọ nke infusion tii.
N'ihe gbasara uru ahụike, Theaflavins enyochala nke ukwuu maka ọrụ ha nwere n'ịkwalite ahụike obi. Nnyocha e mere na-atụ aro na Theaflavins nwere ike inye aka belata ọkwa cholesterol, melite ọrụ arịa ọbara, ma nwee mmetụta mgbochi mkpali, nke niile bara uru maka ahụike obi. Na mgbakwunye, Theaflavins egosila ikike igbochi uto mkpụrụ ndụ kansa ma nwee ike ịnwe ihe mgbochi ọrịa shuga.
N'aka nke ọzọ, Thearubigins ejikọtara ya na antioxidant na mmetụta mgbochi mkpali, nke dị mkpa maka ịlụso nrụgide oxidative ọgụ na mbufụt n'ime ahụ. Ngwongwo ndị a nwere ike inye aka na mmetụta nchebe nke Thearubigins nwere ike ime ka ịka nká na akpụkpọ anụ, na-eme ka ha bụrụ isiokwu nke mmasị na nlekọta anụ ahụ na nyocha metụtara afọ.
Na mmechi, Theaflavins na Thearubigins bụ ogige polyphenolic dị iche iche a chọtara na tii ojii, nke ọ bụla nwere kemịkalụ pụrụ iche yana uru ahụike nwere ike. Ọ bụ ezie na ejikọtala Theaflavins na ahụike obi obi, ọgwụ mgbochi ọrịa cancer, na mmetụta ndị nwere ike igbochi ọrịa shuga, Thearubigins jikọtara ya na antioxidant, mgbochi mkpali, na ihe nchebe akpụkpọ anụ, na-eme ka ha bụrụ isiokwu nke mmasị na mgbochi ịka nká na nlekọta anụ ahụ. nyocha.
Ntụaka:
Hamilton-Miller JM. Antimicrobial Njirimara nke tii (Camellia sinensis L.). Antimicrob Agents Chemother. 1995;39 (11):2375-2377 .
Khan N, Mukhtar H. Tii polyphenols maka nkwalite ahụike. Ndụ Sci. 2007;81 (7): 519-533 .
Mandel S, Youdim MB. Catechin polyphenols: neurodegeneration na neuroprotection na ọrịa neurodegenerative. Free Radic Biol Med. 2004;37 (3): 304-17 .
Jochmann N, Baumann G, Stangl V. Green tii na ọrịa obi: si molekụla lekwasịrị anya n'ebe ahụ ike mmadụ. Curr Opin Clin Nutr Metab Care. 2008;11 (6): 758-765 .
Oge nzipu: Mee-11-2024
