Umphumela we-selenium
Eyemfuyo nezinkukhu zokuzalanisa
1. Thuthukisa ukusebenza kokukhiqiza nezinga lokuguqulwa kokuphakelayo;
2. Ukuthuthukisa ukusebenza kokukhiqiza kabusha;
3. Ukuthuthukisa ikhwalithi yenyama, amaqanda nobisi, futhi uthuthukise okuqukethwe kwe-selenium emikhiqizweni;
4. Thuthukisa ukwakheka kwamaprotheni ezilwane;
5. Thuthukisa ikhono lokulwa nokucindezeleka kwezilwane;
6. Lungisa ama-microorganisms amathumbu ukuze alondoloze impilo yamathumbu;
7. Thuthukisa ukuvikeleka kwezilwane…
Kungani i-organic selenium iphakeme kune-inorganic selenium?
1. Njengesengezo sangaphandle, i-bioavailability ye-selenium cysteine (SeCys) yayingekho phezulu kune-sodium selenite. (Deagen et al., 1987, JNut.)
2. Izilwane azikwazi ukuhlanganisa ama-selenoprotein ngokuqondile kuma-SeCys angaphandle.
3. Ukusetshenziswa okuphumelelayo kwe-SeCys ezilwaneni kutholakala ngokuphelele ngokuguqulwa kabusha kanye nokuhlanganiswa kwe-selenium endleleni ye-metabolic nasemangqamuzaneni.
4. I-pool ye-selenium esetshenziselwa ukugcinwa okuzinzile kwe-selenium ezilwaneni ingatholakala kuphela ngokufaka ukulandelana kwe-synthesis yamaprotheni aqukethe i-selenium ngendlela ye-SeMet esikhundleni sama-molecule e-methionine, kodwa i-SeCys ayikwazi ukusebenzisa le ndlela yokuhlanganisa.
Indlela yokumuncwa i-selenomethionine
Imuncwa ngendlela efanayo ne-methionine, engena ohlelweni lwegazi nge-sodium pumping system ku-duodenum.Ukugxilisa ingqondo akuthinti ukumunca.Ngenxa yokuthi i-methionine iyi-amino acid ebalulekile, ivame ukumuncwa kakhulu.
Imisebenzi yebhayoloji ye-selenomethionine
1. Umsebenzi we-Antioxidant: I-Selenium iyisikhungo esisebenzayo se-GPx, futhi umsebenzi wayo we-antioxidant wenziwa nge-GPx kanye ne-thioredoxin reductase (TrxR).Umsebenzi we-Antioxidant uwumsebenzi oyinhloko we-selenium, futhi eminye imisebenzi yezinto eziphilayo isekelwe kakhulu kulokhu.
2. Ukugqugquzelwa kokukhula: Izifundo eziningi ziye zafakazela ukuthi ukufaka i-selenium ephilayo noma i-selenium engaphili ekudleni kungathuthukisa ukusebenza kahle kwezinkukhu, izingulube, ezelusayo noma izinhlanzi, njengokunciphisa isilinganiso sokudla nenyama kanye nokwandisa isisindo sansuku zonke. inzuzo.
3. Ukusebenza okuthuthukisiwe kokuzala: Ucwaningo luye lwabonisa ukuthi i-selenium ingathuthukisa ukuhamba kwesidoda kanye nokubala kwesidoda esidodeni, kuyilapho ukuntuleka kwe-selenium kungakhuphula izinga lokungasebenzi kahle kwesidoda;Ukwengeza i-selenium ekudleni kungakhuphula izinga lokuvundisa kwezingulube, kwandise inani likadoti, kwande. izinga lokukhiqizwa kwamaqanda, ukuthuthukisa ikhwalithi yegobolondo leqanda futhi andise isisindo seqanda.
4. Thuthukisa ikhwalithi yenyama: I-lipid oxidation iyisici esiyinhloko sokuwohloka kwekhwalithi yenyama, umsebenzi we-selenium antioxidant iyisici esiyinhloko sokuthuthukisa ikhwalithi yenyama.
5. Ukukhipha ubuthi emzimbeni: Ucwaningo luye lwabonisa ukuthi i-selenium ingaphikisa futhi idambise imiphumela enobuthi yomthofu, i-cadmium, i-arsenic, i-mercury nezinye izakhi eziyingozi, i-fluoride ne-aflatoxin.
6. Eminye imisebenzi: Ngaphezu kwalokho, i-selenium idlala indima ebalulekile ekuvikelekeni komzimba, ukufakwa kwe-selenium, ukukhishwa kwe-hormone, umsebenzi we-enzyme yokugaya, njll.
Isikhathi sokuthumela: Feb-28-2023
