Ndị Teaflavin (TFs)naNdị Thearubigins (TRs)bụ otu abụọ dị iche iche nke polyphenolic compounds dị na tii ojii, nke ọ bụla nwere ihe mejupụtara kemịkalụ na ihe onwunwe pụrụ iche. Ịghọta ọdịiche dị n'etiti ihe ndị a dị mkpa iji ghọta onyinye ha n'otu n'otu na njirimara na uru ahụike nke tii ojii. Isiokwu a na-achọ inye nyocha zuru oke nke ọdịiche dị n'etiti Theaflavins na Thearubigins, nke ihe akaebe sitere na nyocha dị mkpa kwadoro.
Theaflavins na thearubigins bụ flavonoids ndị na-eme ka agba, ụtọ, na ahụ tii dị.Theaflavins bụ oroma ma ọ bụ ọbara ọbara, thearubigins na-acha ọbara ọbara-agba aja ajaTheaflavins bụ flavonoids mbụ na-apụta n'oge oxidation, ebe thearubigins na-apụta ma emechaa. Theaflavins na-enye aka na mkpụkọ tii ahụ, na-enwu gbaa, na-agbakwa ọsọ, ebe thearubigins na-enye aka n'ike na mmetụta ọnụ ya.
Theaflavins bụ otu n'ime ihe ndị mejupụtara polyphenolic nke na-enye aka na agba, ụtọ, na ihe ndị na-akwalite ahụike nke tii ojii. A na-emepụta ha site na mgbanwe oxidative nke catechins n'oge usoro ịgba akwụkwọ tii. A maara Theaflavins maka mmetụta antioxidant na mgbochi mkpali ha, nke ejikọtara ya na uru ahụike dị iche iche, gụnyere nchedo obi, ihe ndị na-egbochi kansa, na mmetụta mgbochi ịka nká.
N'akụkụ aka nke ọzọ,Ndị Thearubiginsbụ nnukwu ihe ndị e ji polyphenolic mee nke a na-enwetakwa site na oxidation nke polyphenols tii n'oge a na-agba akwụkwọ tii. Ha na-akpata agba ọbara ọbara na ụtọ pụrụ iche nke tii ojii. A na-ejikọta Thearubigins na ihe ndị na-egbochi ọrịa, mgbochi mkpali, na ihe ndị na-echebe akpụkpọ ahụ, na-eme ka ha bụrụ isiokwu mmasị n'ọhịa nke mgbochi ịka nká na nlekọta akpụkpọ ahụ.
N'ihe gbasara kemịkalụ, Theaflavin dị iche na Thearubigins n'ihe gbasara nhazi na nhazi nke molekul ha. Theaflavins bụ ngwakọta dimeric, nke pụtara na njikọta nke obere nkeji abụọ na-emepụta ha, ebe Thearubigins bụ nnukwu ngwakọta polymeric sitere na polymerization nke flavonoids dị iche iche n'oge ịgba tii. Nkewa nhazi a na-enye aka na ọrụ dị iche iche nke bayoloji na mmetụta ahụike nwere ike inwe.
| Theaflavins | Ndị Thearubigins | |
| Agba | Oroma ma ọ bụ ọbara ọbara | Agba aja aja na-acha ọbara ọbara |
| Ntinye aka na tii | Ịdị nro, ìhè, na ọsọ | Ike na mmetụta ọnụ |
| Nhazi kemịkalụ | Nkọwa nke ọma | Dị iche iche na amaghị ama |
| Pasentị nke oke akọrọ dị na tii ojii | 1–6% | 10–20% |
Theaflavins bụ otu ihe mejupụtara ọgwụ ndị a na-eji enyocha ịdị mma nke tii ojii. Oke nke tii ojii dị elu na tii ojii (TF:TR) kwesịrị ịdị site na 1:10 ruo 1:12. Oge ịgbaze bụ isi ihe na-eme ka a na-ejigide oke tii TF:TR.
Theaflavins na thearubigins bụ ngwaahịa e ji mara catechins n'oge e ji enzymatic oxidation nke tii eme ihe n'oge mmepụta. Theaflavins na-enye tii agba oroma ma ọ bụ oroma-acha ọbara ọbara ma na-enye aka na mmetụta ọnụ na oke nhazi ude. Ha bụ ngwakọta dimeric nke nwere ọkpụkpụ benzotropolone nke e mepụtara site na co-oxidation nke ụzọ abụọ catechins ahọpụtara. Oxidation nke mgbanaka B nke (−)-epigallocatechin ma ọ bụ (−)-epigallocatechin gallate na-esochi mfu nke CO2 na njikọta n'otu oge na mgbanaka B nke (−)-epicatechin ma ọ bụ (−)-epicatechin gallate molecule (Foto 12.2). Achọpụtala isi anọ nke tii ojii: theaflavin, theaflavin-3-monogallate, theaflavin-3′-monogallate, na theaflavin-3,3′-digallate. Na mgbakwunye, stereoisomers na ihe ndị sitere na ha nwere ike ịdị. N'oge na-adịbeghị anya, a kọrọ na e nwere aflavin trigallate na tetragallate n'ime tii ojii (Chen et al., 2012). A pụrụ ime ka aflavins dịkwuo oxidize. Ha nwekwara ike ịbụ ihe ndị na-ebute ụzọ maka imepụta aarubigins polymeric. Agbanyeghị, a maghị usoro mmeghachi omume ruo ugbu a. Thearubigins bụ agba aja aja-acha ọbara ọbara ma ọ bụ agba aja aja gbara ọchịchịrị na tii ojii, ọdịnaya ha na-akpata ihe ruru 60% nke oke akọrọ nke ntinye tii.
Maka uru ahụike, a mụọla Theaflavins nke ọma maka ọrụ ha nwere ike ịrụ n'ịkwalite ahụike obi. Nnyocha egosila na Theaflavins nwere ike inye aka belata ọkwa cholesterol, melite ọrụ arịa ọbara, ma nwee mmetụta mgbochi mkpali, ihe niile bara uru maka ahụike obi. Na mgbakwunye, Theaflavins egosila na ha nwere ike igbochi uto nke mkpụrụ ndụ kansa ma nwee ike ịnwe ihe ndị na-egbochi ọrịa shuga.
N'aka nke ọzọ, a na-ejikọ Thearubigins na mmetụta antioxidant na mgbochi mkpali, nke dị oke mkpa maka ịlụso nrụgide oxidative na mbufụt n'ahụ ọgụ. Àgwà ndị a nwere ike itinye aka na mmetụta mgbochi ịka nká na nchekwa akpụkpọ ahụ nke Thearubigins, na-eme ka ha bụrụ isiokwu mmasị na nlekọta akpụkpọ ahụ na nyocha metụtara afọ.
Na mmechi, Theaflavins na Thearubigins bụ ngwakọta polyphenolic dị iche iche dị na tii ojii, nke ọ bụla nwere ihe mejupụtara kemịkalụ pụrụ iche na uru ahụike nwere ike. Ọ bụ ezie na ejikọtara Theaflavins na ahụike obi, ihe ndị na-egbochi kansa, na mmetụta ndị nwere ike igbochi ọrịa shuga, ejikọtara Thearubigins na ihe ndị na-egbochi antioxidant, mgbochi mbufụt, na ihe ndị na-echebe akpụkpọ ahụ, na-eme ka ha bụrụ isiokwu mmasị na nyocha mgbochi ịka nká na nlekọta akpụkpọ ahụ.
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Oge ozi: Mee-11-2024
