Amavithamini
3K 0 17.11.2018 (kugcine ukubuyekezwa: 02.07.2019)
I-Biotin ivithamini B (B7). Ibizwa nangokuthi i-vitamin H noma i-coenzyme R. Le nhlanganisela iyi-cofactor (into esiza amaprotheni ukwenza umsebenzi wawo) ekwenziweni kwamafutha ne-leucine, inqubo yokwakheka kwe-glucose.
Incazelo nendima yebhayoloji ye-biotin
I-Biotin iyingxenye yama-enzyme amaningana asheshisa ukusabela komzimba okubandakanya amaprotheni namafutha. Le vithamini iyadingeka ekwakhiweni kwe-glucokinase, elawula umzimba we-carbohydrate.
IBiotin isebenza njenge-coenzyme yama-enzyme amaningi, ibamba iqhaza ku-purine metabolism, futhi iwumthombo wesibabule. Iphinde isize ekusebenzeni nasekuthuthweni kwesikhutha.
IBiotin itholakala ngamanani ahlukahlukene cishe kukho konke ukudla.
Imithombo esemqoka ye-B7:
- inyama yenyama;
- imvubelo;
- imidumba;
- amakinati namanye amantongomane;
- ukholifulawa.
Futhi, abahlinzeki bevithamini yizinkukhu ezibilisiwe noma ezithosiwe namaqanda ezigwaca, utamatisi, amakhowe, isipinashi.
Ngokudla, umzimba uthola inani elanele likavithamini B7. Iphinde ihlanganiswe nezimbali zamathumbu, inqobo nje uma iphilile. Ukushoda kwe-Biotin kungadalwa yizifo zofuzo, kepha lokhu akuvamile.
Ngaphezu kwalokho, ukuntuleka kwaleli vithamini kungabonakala ezimweni ezilandelayo:
- ukusetshenziswa kwesikhathi eside kwama-antibiotic (ibhalansi nokusebenza kwezimbali zamathumbu ezihlanganisa i-biotin kuphazamisekile);
- imikhawulo enzima yokudla edala ukuntuleka kwezakhi eziningi zamavithamini, kufaka phakathi i-biotin;
- ukusetshenziswa kokufakwa esikhundleni sikashukela, ikakhulukazi i-saccharin, enomphumela omubi ku-metabolism wevithamini futhi ivimbela umsebenzi obalulekile wamagciwane azuzayo emathunjini;
- iziyaluyalu zombuso kanye nokusebenza kolwelwesi lwamafinyila lwesisu namathumbu amancane, okubangelwa ukuphazamiseka kwenqubo yokugaya ukudla;
- ukuphuza ngokweqile;
- Ukudla ukudla okuqukethe usawoti wesulfurous acid njengama-preservatives (i-potassium, calcium ne-sodium sulfites - izithasiselo zokudla E221-228).
Izimpawu zokushoda kwe-biotin emzimbeni yilezi zibonakaliso ezilandelayo:
- umfutho wegazi ophansi;
- ukubukeka okungenampilo nesikhumba esomile;
- ubuthakathaka bemisipha;
- ukuntula ukudla;
- isicanucanu njalo;
- amazinga aphezulu e-cholesterol noshukela;
- ukozela, ukuncipha kobungqabavu;
- izifunda ezingaphansi kokucindezela;
- i-anemia;
- ukwanda kwe-fragility, izinwele ezibuthuntu, i-alopecia (ukulahlekelwa izinwele).
Ezinganeni, ngokuntuleka kukavithamini B7, inqubo yokukhula yehlisa ijubane.
Ukusetshenziswa kwe-biotin kwezemidlalo
Abasubathi bavame ukusebenzisa izakhiwo zamavithamini nezamaminerali ezine-biotin. Le nhlanganisela idlala indima ebalulekile ezinqubweni ze-metabolic ngokubamba iqhaza kwama-amino acid, ukwakhiwa kwama-molecule wamaprotheni.
Ngaphandle kwe-biotin, ukuphendula okuningi kwamakhemikhali akunakwenzeka, lapho kukhiqizwa khona isisetshenziswa samandla ukuhlinzeka ngemicu yemisipha. Kaningi, ukuminyaniswa okuphansi kwale vithamini yisizathu sokuthi umgijimi angakwazi ukuthola isisindo semisipha ngejubane elijwayelekile.
Ukushoda kukavithamini B7 kwesinye isikhathi kungenxa yokuthi abasubathi abaningi bakhetha ukudla amaqanda aluhlaza. Eqanda elimhlophe kune-glycoprotein avidin, umhlangano uvithamini B7 ongena kuwo ekuphenduleni kwamakhemikhali. Umphumela uyinhlanganisela okunzima ukuyigaya, futhi i-biotin ayifakiwe ku-amino acid synthesis.
Imithamo nohlobo lwemithi
Umthamo omkhulu ovunyelwe kavithamini B7 awukanqunywa. Imfuneko yemvelo ilinganiselwa ososayensi cishe kuma-50 mcg ngosuku.
| Ubudala | Imfuneko yansuku zonke, mcg / usuku |
| Izinyanga 0-8 | 5 |
| Izinyanga eziyi-9-12 | 6 |
| Iminyaka engu-1-3 | 8 |
| Uneminyaka engu-4-8 ubudala | 12 |
| Uneminyaka engu-9-13 ubudala | 20 |
| Iminyaka engu-14-20 ubudala | 25 |
| Ngaphezulu kweminyaka engama-20 ubudala | 30 |
I-Biotin yokwehlisa isisindo
Izithako ze-Vitamin B7 zisetshenziselwa ukunciphisa umzimba. Ngokushoda kwe-biotin, ebamba iqhaza elibalulekile ezinqubeni zemetabolism yamaprotheni namafutha, imetabolism iyehla. Ezimweni ezinjalo, ukuzivocavoca umzimba akulethi umphumela oyifunayo, futhi ukusebenzisa izakhiwo nale vithamini, ungakwazi "ukukhuthaza" imetabolism.
Uma kune-biotin eyanele, khona-ke ukuguqulwa kwezakhamzimba kumandla kwenzeka ngamandla. Kodwa-ke, kufanele kukhunjulwe ukuthi ukuthatha isithasiselo ngayo, udinga ukunikeza umzimba wakho umsebenzi omuhle womzimba. Ngaphandle kwalokho, ngeke akhiqize amandla angadingekile, futhi izakhi ezingenayo ngeke zisetshenziswe.
Akukho ukuphikisana nokuthatha izithasiselo zevithamini B7. Ukungabekezelelani komuntu ngamunye ezintweni eziqukethe. Ezimweni ezinjalo, akufanele zithathwe. Kunoma ikuphi, kungcono ukuxhumana nodokotela ngaphambi kokusebenzisa.
