Theaflavins (TFs)naThearubigins (TRs)ni amatsinda abiri atandukanye yibintu bya polifenolike biboneka mu cyayi cyirabura, buri kimwe gifite imiterere yihariye yimiti nimiterere. Gusobanukirwa itandukaniro riri hagati yibi bikoresho ningirakamaro mugusobanukirwa uruhare rwabo kugiti cyabo nibyiza byubuzima bwicyayi cyirabura. Iyi ngingo igamije gutanga ubushakashatsi bwimbitse ku itandukaniro riri hagati ya Theaflavins na Thearubigins, rishyigikiwe nibimenyetso bivuye mu bushakashatsi bujyanye.
Theaflavins na thearubigins byombi ni flavonoide igira uruhare mu ibara, uburyohe, n'umubiri w'icyayi.Theaflavins ni orange cyangwa umutuku, na thearubigins itukura-umukara. Theaflavins niyo flavonoide yambere igaragara mugihe cya okiside, mugihe thearubigins igaragara nyuma. Theaflavins igira uruhare mukunywa kwicyayi, kumurika, no kwihuta, mugihe thearubigins igira uruhare mumbaraga zayo no kumva umunwa.
Theaflavins nicyiciro cyibintu byinshi bya polifenolike bigira uruhare mubara, uburyohe, hamwe nubuzima bwiza bwicyayi cyirabura. Byakozwe binyuze muri okiside dimerisation ya catechine mugihe cyo gusembura amababi yicyayi. Theaflavins izwiho ingaruka za antioxydeant na anti-inflammatory, zifitanye isano n’inyungu zitandukanye z’ubuzima, harimo kurinda umutima n’umutima, imiti irwanya kanseri, ndetse n’ingaruka zishobora kurwanya gusaza.
Ku rundi ruhande,Thearubiginsni ibinini binini bya polifenolike nabyo biva muri okiside ya polifenole yicyayi mugihe cyo gusembura amababi yicyayi. Bashinzwe ibara ritukura rikungahaye hamwe nuburyohe bwicyayi cyirabura. Thearubigins yagiye ifitanye isano na antioxydeant, anti-inflammatory, hamwe n’umubiri urinda uruhu, bigatuma iba ingingo ishishikajwe no kurwanya gusaza no kwita ku ruhu.
Muburyo bwa chimique, Theaflavins itandukanye na Thearubigins ukurikije imiterere ya molekile hamwe nibigize. Theaflavins ni dimeric compound, bivuze guhuza ibice bibiri bito bibikora, mugihe Thearubigins nini nini ya polymeric nini ituruka kuri polymerisation ya flavonoide itandukanye mugihe cyo gusembura icyayi. Uku kutavuguruzanya kwimiterere bigira uruhare mubikorwa byabo bitandukanye byibinyabuzima n'ingaruka zubuzima.
| Theaflavins | Thearubigins | |
| Ibara | Icunga cyangwa umutuku | Umutuku-umukara |
| Umusanzu w'icyayi | Kwiyegereza, kumurika, no kwihuta | Imbaraga no kumva umunwa |
| Imiterere yimiti | Byasobanuwe neza | Heterogeneous and unknown |
| Ijanisha ryibiro byumye mu cyayi cyirabura | 1-6% | 10–20% |
Theaflavins nitsinda nyamukuru ryibintu bikoreshwa mugusuzuma ubwiza bwicyayi cyirabura. Ikigereranyo cya theaflavins na thearubigins (TF: TR) kigomba kuba 1:10 kugeza 1:12 kubwicyayi cyirabura cyiza cyane. Igihe cyo gusembura nikintu gikomeye mukubungabunga TF: TR.
Theaflavins na thearubigins nibicuruzwa biranga biva muri catechine mugihe cya okiside ya enzymatique yicyayi mugihe cyo gukora. Theaflavins itanga ibara rya orange cyangwa orange-umutuku wicyayi kandi ikagira uruhare mukunva umunwa no kurwego rwo gukora amavuta. Nibintu bya dimeric bifite skeleton ya benzotropolone ikomoka kuri co-okiside ya joriji yatoranijwe ya catechine. Okiside yimpeta ya B yaba (-) - epigallocatechin cyangwa (-) - epigallocatechin gallate ikurikirwa no gutakaza CO2 hamwe no guhuza icyarimwe hamwe nimpeta ya B ya (-) - epicatechin cyangwa (-) - molekile ya epicatechin (Ishusho 12.2 ). Ibice bine by'ingenzi byamenyekanye mu cyayi cy'umukara: theaflavin, theaflavin-3-monogallate, theaflavin-3′-monogallate, na theaflavin-3,3′-digallate. Byongeye kandi, stereoisomers nibibikomokaho birashobora kuba bihari. Vuba aha, haravuzwe ko habaho theaflavin trigallate na tetragallate mu cyayi cyirabura (Chen et al., 2012). Theaflavins irashobora gukomeza okiside. Birashoboka ko nabo aribibanziriza gushiraho polymeric thearubigins. Nyamara, uburyo bwo kubyitwaramo ntiburamenyekana kugeza ubu. Thearubigins ni umutuku wijimye cyangwa umukara wijimye wijimye mu cyayi cyirabura, ibiyirimo bigera kuri 60% byuburemere bwumye bwo gushiramo icyayi.
Ku bijyanye n’inyungu z’ubuzima, Theaflavins yizwe cyane kubera uruhare rwabo mu kuzamura ubuzima bwumutima. Ubushakashatsi bwerekanye ko Theaflavins ishobora gufasha kugabanya urugero rwa cholesterol, kunoza imikorere yimitsi yamaraso, no kugira ingaruka zo kurwanya inflammatory, ibyo byose bikaba bifitiye akamaro ubuzima bwumutima. Byongeye kandi, Theaflavins yerekanye ubushobozi bwo kubuza imikurire ya kanseri kandi ishobora kugira imiti irwanya diyabete.
Ku rundi ruhande, Thearubigins yagiye ifitanye isano na antioxydeant na anti-inflammatory, zifite akamaro kanini mu kurwanya impagarara za okiside ndetse n’umuriro mu mubiri. Iyi mico irashobora kugira uruhare mu ngaruka zo kurwanya gusaza no kurinda uruhu rwa Thearubigins, bigatuma iba ingingo ishishikajwe no kwita ku ruhu n’ubushakashatsi bujyanye n’imyaka.
Mu gusoza, Theaflavins na Thearubigins nibintu bitandukanye bya polifenolike biboneka mu cyayi cyirabura, kimwekimwe cyose gifite imiti idasanzwe kandi ishobora kugirira akamaro ubuzima. Mu gihe Theaflavins yaba ifitanye isano n'ubuzima bw'umutima n'imitsi, imiti irwanya kanseri, ndetse n'ingaruka zishobora kurwanya diyabete, Thearubigins yagiye ifitanye isano na antioxydeant, anti-inflammatory, ndetse n'indwara zirinda uruhu, bigatuma bashishikazwa no kurwanya gusaza no kwita ku ruhu ubushakashatsi.
Reba:
Hamilton-Miller JM. Imiti igabanya ubukana bw'icyayi (Camellia sinensis L.). Imiti igabanya ubukana. 1995; 39 (11): 2375-2377.
Khan N, Mukhtar H. Icyayi polifenol yo guteza imbere ubuzima. Ubuzima Sci. 2007; 81 (7): 519-533.
Mandel S, Youdim MB. Catechin polifenol: neurodegeneration na neuroprotection mu ndwara zifata ubwonko. Ubusa Radic Biol Med. 2004; 37 (3): 304-17.
Jochmann N, Baumann G, Stangl V. Icyayi kibisi n'indwara z'umutima-damura: kuva kuri molekile zigana ubuzima bwabantu. Inzira Opin Clin Nutr Metab Kwitaho. 2008; 11 (6): 758-765.
Igihe cyo kohereza: Gicurasi-11-2024
