Isiphumo selenium
Eyemfuyo kunye neenkukhu zokuzala
1. Ukuphucula ukusebenza kwemveliso kunye nezinga lokuguqulwa kwesondlo;
2. Ukuphucula ukusebenza kokuvelisa;
3. Ukuphucula umgangatho wenyama, amaqanda kunye nobisi, kunye nokuphucula umxholo we-selenium weemveliso;
4. Ukuphucula iprotein yezilwanyana;
5. Ukuphucula ukukwazi ukulwa noxinzelelo lwezilwanyana;
6. Ukulungelelanisa i-intestinal microorganisms ukugcina impilo yamathumbu;
7. Phucula ukhuseleko lwezilwanyana...
Kutheni i-organic selenium yongamile kune-inorganic selenium?
1. Njengesongezo sangaphandle, i-bioavailability ye-selenium cysteine (SeCys) yayingekho phezulu kune-sodium selenite. (Deagen et al., 1987, JNut.)
2. Izilwanyana azikwazi ukwenza ii-selenoproteins ngokuthe ngqo kwii-SeCys zangaphandle.
3. Ukusetyenziswa okusebenzayo kwe-SeCys kwizilwanyana kufunyenwe ngokupheleleyo ngokuguqulwa kwakhona kunye nokuhlanganiswa kwe-selenium kwindlela ye-metabolic kunye neeseli.
4. I-pool ye-selenium esetyenziselwa ukugcinwa okuzinzile kwe-selenium kwizilwanyana inokufumaneka kuphela ngokufaka ukulandelelana kwe-synthesis yeeprotheni ezine-selenium ngendlela ye-SeMet endaweni yee-molecule ze-methionine, kodwa i-SeCys ayikwazi ukusebenzisa le ndlela yokudibanisa.
Indlela yokufunxa i-selenomethionine
Ifunxwa ngendlela efanayo ne-methionine, engena kwinkqubo yegazi ngokusebenzisa inkqubo yokumpompa i-sodium kwi-duodenum. Ugxininiso olwenziweyo aluchaphazeli ukufunxa. Ngenxa yokuba i-methionine iyimfuneko ye-amino acid, idla ngokufunxwa kakhulu.
Imisebenzi yebhayoloji ye-selenomethionine
1. Umsebenzi we-Antioxidant: I-Selenium yindawo esebenzayo ye-GPx, kwaye umsebenzi wayo we-antioxidant ufezekiswa nge-GPx kunye ne-thioredoxin reductase (TrxR). Umsebenzi we-Antioxidant ngowona msebenzi uphambili we-selenium, kunye neminye imisebenzi yebhayoloji isekelwe ikakhulu kule nto.
2. Ukukhuthazwa kokukhula: Inani elikhulu lezifundo libonise ukuba ukongeza i-selenium ye-organic okanye i-selenium ye-inorganic ekutyeni kunokuphucula ukusebenza kokukhula kweenkukhu, iihagu, i-ruminants okanye intlanzi, njengokunciphisa umlinganiselo wokutya kwinyama kunye nokwandisa ubunzima bemihla ngemihla. inzuzo.
3. Ukuphuculwa kokusebenza kokuzala: Uphononongo lubonise ukuba i-selenium inokuphucula ukuhamba kwedlozi kunye nenani lamadlozi kwi-semen, ngelixa ukunqongophala kwe-selenium kunokunyusa izinga lokungasebenzi kakuhle kwesidoda; Ukongeza i-selenium ekutyeni kunokunyusa izinga lokuchumisa kwemazi, ukwandisa inani lenkunkuma izinga lemveliso yeqanda, ukuphucula umgangatho weqanda kunye nokwandisa ubunzima beqanda.
4. Ukuphucula umgangatho wenyama: I-Lipid oxidation iyona nto iphambili yokuwohloka komgangatho wenyama, i-selenium antioxidant function iyona nto iphambili ekuphuculeni umgangatho wenyama.
5. Ukukhutshwa kwetyhefu emzimbeni: Uphando lubonise ukuba i-selenium inokuchasa kwaye inciphise iziphumo eziyityhefu zelothe, i-cadmium, i-arsenic, i-mercury kunye nezinye izinto ezinobungozi, i-fluoride kunye ne-aflatoxin.
6. Eminye imisebenzi: Ukongezelela, i-selenium idlala indima ebalulekileyo kwi-immunity, i-selenium deposition, i-hormone secretion, umsebenzi we-enzyme yokugaya, njl.
Ixesha lokuposa: Feb-28-2023
