Theaflavins (TFs)uyeThearubigins (TRs)mapoka maviri akasiyana emakomichi epolyphenolic anowanikwa mutii nhema, rimwe nerimwe rine maumbirwo akasiyana emakemikoro uye hunhu hwaro. Kunzwisisa mutsauko uripo pakati pemakomichi aya kwakakosha kuti tinzwisise mipiro yawo yega yega kune hunhu uye mabhenefiti ehutano etii nhema. Chinyorwa chino chine chinangwa chekupa ongororo yakakwana yekusawirirana kuripo pakati peTheaflavins neThearubigins, zvichitsigirwa neuchapupu kubva mukutsvagisa kwakakodzera.
Theaflavins nethearubigins ese ari maviri maflavonoid anobatsira mukuva neruvara, kunaka, uye muviri wetii.Theaflavins iorenji kana tsvuku, uye thearubigins itsvuku-tsvukuMaflavin ndiwo maflavonoid ekutanga kubuda panguva yekupiswa kwemafuta, nepo mathearubigin achibuda gare gare. Matheaflavin anobatsira pakuoma kwetii, kupenya kwayo, uye kupenya kwayo, nepo mathearubigin achibatsira mukusimba kwayo uye kunzwa kwemuromo.
MaTheaflavins iboka remakonzo epolyphenolic anobatsira mukuva neruvara, kuravira, uye hutano hwetii nhema. Anoumbwa kuburikidza ne oxidative dimerization ye catechins panguva yekuvirisa mashizha etii. MaTheaflavin anozivikanwa nemhedzisiro yavo ye antioxidant uye anti-inflammatory, iyo yakabatana nekubatsira kwakasiyana-siyana kwehutano, kusanganisira kudzivirira mwoyo, hunyanzvi hwekurwisa kenza, uye mhedzisiro inogona kurwisa kukwegura.
Pane rimwe divi,Thearubiginsimishonga mikuru yepolyphenolic inowanikwawo kubva mukuoxidation yetii polyphenols panguva yekuvirisa mashizha etii. Ndiwo anokonzera ruvara rutsvuku rwakapfuma uye kunaka kwetii nhema. Thearubigins dzave dzichibatanidzwa nemasimba ekudzivirira ganda, ekudzivirira kuzvimba, uye ekudzivirira ganda, zvichiita kuti dzive chinhu chinodiwa mumunda wekudzivirira kukwegura uye kuchengetedza ganda.
Pamakemikari, maTheaflavin akasiyana neThearubigins maererano nechimiro chawo chemamorekuru uye maumbirwo awo. MaTheaflavins macompounds edimeric, zvichireva kuti musanganiswa wemayuniti maviri madiki anoaumba, nepo maThearubigins ari macompounds makuru epolymeric anokonzerwa nepolymerization yeflavonoids dzakasiyana-siyana panguva yekuvirisa tii. Kusiyana uku kwechimiro kunobatsira pamabasa avo akasiyana ehupenyu uye mhedzisiro inogona kuitika pahutano.
| Theaflavins | Thearubigins | |
| Ruvara | Orenji kana tsvuku | Dzvuku-tsvuku |
| Mupiro wetii | Kupenya, kupenya, uye kupenya | Simba uye kunzwa kwemuromo |
| Maumbirwo emakemikari | Zvakanyatsotsanangurwa | Zvakasiyana uye hazvizivikanwe |
| Chikamu chehuremu hwakaoma mutii nhema | 1–6% | 10–20% |
Theaflavins ndiro boka guru remishonga inoshandiswa kuongorora kunaka kwetii nhema. Chiyero che theaflavins ne thearubigins (TF:TR) chinofanira kuva 1:10 kusvika 1:12 yetii nhema yepamusoro. Nguva yekuvirisa chinhu chikuru pakuchengetedza chiyero che TF:TR.
Theaflavins nethearubigins zvinhu zvinoonekwa kubva kumacatechins panguva yekuoxidation yetii panguva yekugadzira. Theaflavins inopa ruvara rweorenji kana orenji-tsvuku kune tii uye inobatsira kunzwa kwemuromo uye kuumbwa kwekrimu. Imakemikari ane dimeric ane skeleton yebenzotropolone inoumbwa kubva mukuoxidation kwemapaya akasarudzwa emacatechins. Kuoxidation kweB ring ye (−)-epigallocatechin kana (−)-epigallocatechin gallate kunoteverwa nekurasikirwa neCO2 uye kusangana panguva imwe chete neB ring ye (−)-epicatechin kana (−)-epicatechin gallate molecule (Mufananidzo 12.2). Ma theaflavins mana makuru akaonekwa mublack tea: theaflavin, theaflavin-3-monogallate, theaflavin-3′-monogallate, uye theaflavin-3,3′-digallate. Pamusoro pezvo, stereoisomers dzavo uye derivatives zvinogona kuvapo. Munguva pfupi yapfuura, kuvapo kwetheaflavin trigallate netetragallate mutii nhema kwakataurwa (Chen et al., 2012). Theaflavins dzinogona kuoxidized zvakanyanya. Dzinogona kunge dziriwo dzinotungamira pakuumbwa kwepolymeric thearubigins. Zvisinei, mashandiro ekuita kwekuita kwechinhu haasati azivikanwa kusvika parizvino. Thearubigins imavara matsvuku-brown kana matema-brown mutii nhema, huwandu hwawo hunosvika 60% yehuremu hwakaoma hwetii infusion.
Panyaya yekubatsira kwehutano, Theaflavins dzakadzidzwa zvakanyanya nekuda kwebasa radzo mukusimudzira hutano hwemwoyo. Tsvagiridzo yakaratidza kuti Theaflavins inogona kubatsira kuderedza cholesterol, kuvandudza mashandiro etsinga dzeropa, uye kuva nemigumisiro yekudzivirira kuzvimba, izvo zvese zvinobatsira hutano hwemwoyo. Pamusoro pezvo, Theaflavins dzakaratidza kugona kudzivirira kukura kwemasero ekenza uye dzinogona kuva nehunyanzvi hwekurwisa chirwere cheshuga.
Kune rumwe rutivi, Thearubigins yave ichibatanidzwa nemhedzisiro yeantioxidant uye anti-inflammatory, izvo zvakakosha pakurwisa oxidative stress uye kuzvimba mumuviri. Hunhu uhwu hunogona kubatsira mumhedzisiro inogona kuitika yeThearubigins yekudzivirira kukwegura uye kudzivirira ganda, zvichiita kuti ive nyaya inodiwa mukuchengetedza ganda uye tsvakiridzo ine chekuita nezera.
Mukupedzisa, Theaflavins neThearubigins imishonga yakasiyana-siyana inowanikwa mutii nhema, imwe neimwe ine makemikari akasiyana uye mabhenefiti anogona kuva pahutano. Kunyange zvazvo Theaflavins yakabatana nehutano hwemwoyo, hunhu hwekenza, uye mhedzisiro inogona kurwisa chirwere cheshuga, Thearubigins yakabatana nehunhu hwekuchengetedza antioxidant, hunhu hwekudzivirira kuzvimba, uye hunhu hwekudzivirira ganda, zvichiita kuti ive chinhu chinodiwa mukutsvaga kwekudzivirira kukwegura uye kuchengetedza ganda.
Mareferensi:
Hamilton-Miller JM. Hunhu hwetii hwekurwisa utachiona (Camellia sinensis L.). Mishonga yekurwisa utachiona Chemother. 1995;39(11):2375-2377.
Khan N, Mukhtar H. Tea polyphenols yekusimudzira hutano. Life Sci. 2007;81(7):519-533.
Mandel S, Youdim MB. Catechin polyphenols: kuora kwetsinga uye kudzivirira kwetsinga muzvirwere zvinoora kwetsinga. Free Radic Biol Med. 2004;37(3):304-17.
Jochmann N, Baumann G, Stangl V. Green tii uye chirwere chemwoyo: kubva pazvinangwa zvemamorekuru kuenda kuhutano hwevanhu. Curr Opin Clin Nutr Metab Care. 2008;11(6):758-765.
Nguva yekutumira: Chivabvu-11-2024
