I-tea polyphenols itiye (Camellia sinensl.) njengento eluhlaza, ekhishwe ku-catechin njengomzimba oyinhloko wezithasiselo zokudla ze-polyphenols, ezaziwa nangokuthi amavithamini polyphenols. Ama-catechin ayinhloko yi-epigallocatechin gallate (EGCG), i-epigallocatechin gallate (EGC), i-epicatechin gallate (ECG), i-epicatechin (EC), ne-catechin (C).
Akuwona wonke amatiye aqukethe inani elifanayo lama-polyphenols. Ukujula kokuvutshelwa kwetiye, ama-polyphenol etiye engeziwe aguqulwa abe ezinye izinto, futhi okuqukethwe kwama-polyphenols kuzokwehla ngokufanele. Kodwa-ke, itiye eliluhlaza licebile kuma-polyphenols ngaphandle kokuvutshelwa. Idatha ibonisa ukuthi okuqukethwe kwe-polyphenols etiyeni eliluhlaza kuphakeme ngo-144% kunaletiye elimnyama lekhwalithi efanayo, futhi ngo-59% ephakeme kunaleyo yetiye ye-Oolong yekhwalithi efanayo.
Ngaphezu kohlobo lwetiye, izinga letiye liphinde lithinte okuqukethwe kwetiye polyphenols. Isibonelo, lapho wenza amaqabunga etiye, lapho amaqabunga emancane, ikhwalithi engcono kakhulu. Ngoba amaqabunga amancane akhula phezulu, eduze kakhulu nokukhanya kwelanga, angakwazi ukwenza i-photosynthesis ngokugcwele, azohlanganisa izinto eziningi ze-phenolic.
Izimpawu zetiye polyphenols:
Okuphuzi okuphaphathekile kuya ku-tawny eyodwa noma impushana e-tawny noma unamathisele; Iphunga letiye, ukunambitheka kwe-astringent kancane; Incibilika emanzini, i-ethanol, i-methanol, i-ethyl acetate, i-acetone nezinye izincibilikisi, i-soluble kancane emafutheni, engancibiliki ku-chloroform; I-Hygroscopicity; Ukuzinza okuqinile, enanini le-PH lika-4-8, imvelo engama-degree angu-25, kungahlala kuzinzile phakathi namahora angu-1.5, ukubola kalula phambi kwe-ferric ion.
Ukumelana ne-oxidation:
I-polyphenols yetiye inomthamo oqinile we-antioxidant, amandla ayo okulwa ne-antioxidant izikhathi ezingu-4-6 ze-BHT ne-BHA, izikhathi ezingu-6-7 ze-vitamin E, izikhathi ezingu-5-10 ze-vitamin C, futhi umthamo uncane, i-0.01% -0.03% ingasebenza, futhi akukho mphumela ongase ube yingozi.
Umsebenzi wetiye polyphenols:
1. Ukuvimbela-ukuguga: Ama-polyphenol etiye angasusa ngokuqinile ama-free radicals, avimbe inqubo ye-lipid peroxidation, avimbele i-lipoxygenase kanye ne-lipid peroxidation ku-mitochondria yesikhumba, ukuze ibe nomthelela{2}}wokuguga. Ucwaningo luye lwabonisa ukuthi i-1 mg yetiye polyphenols ingasusa ama-radicals mahhala ngokweqile ayingozi emzimbeni womuntu olingana ne-9 micrograms ye-superoxide dismutase (SOD), ephakeme kakhulu kunezinye izinto ezifanayo; Umsebenzi we-antioxidant wetiye polyphenols unamandla izikhathi eziyi-18 kunovithamini E, futhi unomphumela we-synergistic novithamini C no-E.
2. Ama-lipids egazi aphansi: Ama-catechin aku-polyphenols yetiye, njenge-ECG ne-EGC, kanye nemikhiqizo yawo ene-oxidizing, njengama-theaflatins, angavimbela ama-atherosclerotic plaque akheka ngemva kokwanda kwamangqamuzana emisipha ebushelelezi futhi anciphise i-fibrinogen, okuholela ekwandeni kokubopha kwegazi. Okuvimbela i-atherosclerosis.
3. Ukunciphisa ukungezwani komzimba: Ama-polyphenol etiye angavimbela ngokuqinile ukukhululwa kwe-histamine, futhi ukuhlola kufakazele ukuthi ama-polyphenol etiye angamelana nokungezwani nokungezwani komzimba nokungezwani nesikhumba izikhathi ezingu-2~10 ngaphezu kwezidakamizwa ezivame ukusetshenziswa{3}}zokungezwani komzimba.
4. I-Detoxification: Ama-polyphenol etiye anomphumela oqinile wokukhangisa ezinsimbi ezisindayo futhi angenza inkimbinkimbi enezinsimbi ezisindayo ukuze kukhiqizwe imvula, okuzuzisa ukwehlisa umphumela onobuthi wezinsimbi ezisindayo emzimbeni womuntu. Ngaphezu kwalokho, ama-polyphenols etiye angathuthukisa ukusebenza kwesibindi kanye nomphumela wokukhipha amanzi emzimbeni, ngakho-ke linomphumela omuhle we-anti{2}}alkaloid poisoning.
5. Siza ekugayeni ukudla: i-caffeine etholakala etiyeni i-polyphenol ingathuthukisa ukukhishwa kwejusi yesisu, ingasiza ukugaya, ithuthukise ikhono lokubola amafutha. Lokho-okubizwa ngokuthi "ukudla okude kwenza kunciphe" iqiniso selilapha.
6. Ukunqanda-imisebe: ama-polyphenol etiye kanye nemikhiqizo yalo yokukhipha i-oxidation inomsebenzi omuhle kakhulu we-anti-wokukhipha imisebe, ingamunca izinto ezikhipha imisebe, ivimbele ukusakazeka kwayo emzimbeni womuntu, okwaziwa ngokuthi isihlungi se-uv esingokwemvelo.
7. Ukuvikelwa kwamazinyo: i-polyphenols yetiye ingabulala amagciwane e-lactic acid namanye amagciwane e-caries endaweni yezinyo, ivimbele umsebenzi we-glucose polymerase, imise ngempumelelo inqubo yokwakheka kwezinyosi. Ukudla kwamaprotheni okusele emifantwini kusebenza njengengxenye yokwanda kwamagciwane abolayo, abulala ama-polyphenols etiye.
8. Ubuhle: ama-polyphenol etiye angamanzi-izinto ezincibilikayo, geza ubuso bakho ngawo angasusa ubuso obunamafutha, izimbotshana ezihlanganayo, ngokubulala amagciwane, ukuvalwa kwesikhumba, ukunqanda{2}}isikhumba ukuguga, ukunciphisa imisebe yelanga esikhumbeni kanye neminye imiphumela.
