Utamatisi ohlelwe ngofuzo unganikeza umthombo omusha kavithamini D

Utamatisi ukhiqiza ngokwemvelouvithamini Dizandulela.Ukuvala indlela yokuyiguqula ibe amanye amakhemikhali kungaholela ekuqongeleleni okwandulelayo.
Izitshalo zikatamatisi ezihlelwe ngofuzo ezikhiqiza izandulela zikavithamini D ngolunye usuku zingahlinzeka ngomthombo ongenazilwane wezakhi ezibalulekile.

Ilinganiselwa ku-1 bhiliyoni abantu abangamtholi uvithamini D owanele - isimo esingaholela ezinkingeni zezempilo ezihlukahlukene, okuhlanganisa ukuphazamiseka kwamasosha omzimba kanye nemizwa.Izitshalo ngokuvamile aziwutholi umsoco, futhi abantu abaningi batholauvithamini Dkusuka emikhiqizweni yezilwane njengamaqanda, inyama, nobisi.
Lapho utamatisi ohlelwe ngofuzo ochazwe ku-Nature Plants ngoMeyi 23 echayeka ekukhanyeni kwe-ultraviolet elebhu, ezinye izandulela ezibizwa nge-vitamin D3 zaguqulwa zaba uvithamini D3. bazoziphatha kanjani uma sebekhule bengaphandle.
Nokho, kusho isazi sezitshalo uJohnathan Napier weRothamsted Research eHarpenden, e-UK, lesi isibonelo esithembisayo nesingavamile sokusebenzisa ukuhlelwa kwezakhi zofuzo ukuze kuthuthukiswe izinga lokudla okunomsoco kwezitshalo. Kudinga ukuqonda okujulile nge-biochemistry katamatisi.”Ungahlela kuphela lokho okuqondayo,” kusho yena.” Futhi kungenxa yokuthi siyayiqonda i-biochemistry ukuthi singakwazi ukwenza lolu hlobo lokungenelela.”

Ukuhlela izakhi zofuzo kuyindlela evumela abacwaningi ukuthi benze izinguquko ezihlosiwe ku-genome yento ephilayo futhi kuye kwanconywa njengendlela engaba khona yokuthuthukisa izitshalo ezingcono. Nakuba izitshalo ezishintshwe izakhi ezenziwe ngokufaka izakhi zofuzo ku-genome yesitshalo ngokuvamile kufanele zihlolwe kabanzi ngabalawuli bakahulumeni, amazwe amaningi enze kahle inqubo yezitshalo zokuhlela i-genome-inqobo nje uma ukuhlela kulula futhi ukuguqulwa okuwumphumela kungase kube nezinguquko ezenzeka ngokwemvelo .
Kodwa uNapier uthe zimbalwa izindlela zokusebenzisa lolu hlobo lokuhlela izakhi zofuzo ukwenza ngcono umsoco ezitshalweni. Nakuba ukuhlela izakhi zofuzo kungasetshenziswa ukuvala izakhi zofuzo ngezindlela ezizuzisa abathengi—ngokwesibonelo, ngokususa izakhi zezitshalo ezingase zisetshenziswe. kubangela ukungezwani komzimba nezinto ezithile—kunzima kakhulu ukuthola uguquko lwesakhi sofuzo oluphumela esakhiweni esisha somsoco.”Ukuze uthuthukise umsoco wangempela, kufanele uhlehle ucabange, lingaba usizo kangakanani leli thuluzi?”Kusho uNapier.

Nakuba ezinye izitshalo ngokwemvelo zikhiqiza uhlobo oluthile lwevithamini D, ngokuvamile kamuva luguqulwa lube ikhemikhali elawula ukukhula kwezitshalo.Ukuvimbela indlela yokuguqulwa kuholela ekuqongeleleni ama-precursors kavithamini D, kodwa futhi ekukhuleni kwezitshalo okukhubazekile.Lokhu kuwukucatshangelwa okubaluleke kakhulu uma ufuna ukwenza izitshalo ezithela kakhulu,” kusho uCathie Martin, isazi sezitshalo e-John Innes Center eNorwich, e-UK.
Kodwa ama-nightshades nawo anendlela ehambisanayo ye-biochemical eguqula i-provitamin D3 ibe yizinhlanganisela ezivikelayo.UMartin nozakwabo basebenzise leli thuba ezitshaloni zonjiniyela ezikhiqiza uvithamini D3: Bathola ukuthi ukuvala indlela kuholele ekuqongeleleniuvithamini Dizandulela ngaphandle kokuphazamisa ukukhula kwezitshalo elebhu.
UDominique Van Der Straeten, isazi sesayensi yezinto eziphilayo zezitshalo eNyuvesi yaseGhent eBelgium, uthe abacwaningi kufanele manje banqume ukuthi ukuvimba ukukhiqizwa kwezinhlanganisela zokuzivikela uma kukhuliswe ngaphandle kwelabhorethri kuthinta ikhono likatamatisi lokubhekana nokucindezeleka kwemvelo.
UMartin nozakwabo bahlela ukufunda lokhu futhi sebeyitholile kakade imvume yokukhulisa utamatisi wabo ohlelwe ngofuzo ensimini.Ithimba liphinde lafuna ukukala umphumela wokuchayeka kwe-UV yangaphandle ekuguqulweni kwe-vitamin D3 ibe yi-vitamin D3 emaqabunga nezithelo zezitshalo. .“E-UK, sekuzoshabalala,” kuncokola uMartin, ekhuluma ngesimo sezulu esidume kabi semvula kuleliya lizwe. Wathi lapho ethinta umhlanganyeli wase-Italy ebuza ukuthi angakwazi yini ukwenza ucwaningo elangeni ligcwele, waphendula ngokuthi kuzothatha cishe iminyaka emibili ukuthola imvume yokulawula.
Uma utamatisi enza kahle ezifundweni zasemasimini, angase agcine ejoyine uhlu olulinganiselwe lwezitshalo ezinomsoco ezitholakala kubathengi. Kodwa uNapier uxwayisa ngokuthi indlela eya emakethe yinde futhi igcwele izinkinga ezihlanganisa ubuhlakani, izidingo zokulawula kanye nezinselele zokwenziwa kwezinto. Ilayisi - inguqulo ethuthukisiwe yesitshalo ekhiqiza isandulela sika-vitamin A - kuthathe amashumi eminyaka ukusuka emabhentshini alebhu kuya emapulazini, ngaphambi kokuba kugunyazwe ukulinywa ngenjongo yokudayisa ePhilippines ngonyaka odlule.
Ilebhu ka-Van Der Straeten ikhula izitshalo ezishintshwe izakhi ezikhiqiza amazinga aphezulu ezinhlobonhlobo zezakhamzimba, okuhlanganisa i-folate, uvithamini A kanye novithamini B2. Kodwa uyashesha ukuveza ukuthi lesi sitshalo esiqinile singabhekana nokungondleki kuphela.” izindlela esingasiza ngazo abantu, ”kusho yena.” Ngokusobala kuzothatha izinyathelo ezahlukahlukene. ”