Ndingaliphepha njani iqanda ekubeni lijike libe luhlaza xa lipheka?

Ukuthintela umthubi weqanda ekubeni ube luhlaza xa ubiliswa:

• gcina amanzi kumaqondo obushushu abilayo okanye ngaphantsi nje kwamaqondo obushushu abilayo ukunqanda ukutshisa kakhulu
• sebenzisa ipani enkulu kwaye ugcine amaqanda kuluhlu olulodwa
• cima ubushushu xa amanzi efikelela kumaqondo obushushu abilayo
• musa ukuvumela amaqanda emanzini ixesha elide;Imizuzu eyi-10-12 yanele amaqanda aphakathi
• godolisa amaqanda ngamanzi abandayo ngoko nangoko emva kokupheka ukunqanda naziphi na iikhemikhali eziphendula i-yolk eluhlaza

Undoqo kukongeza ubushushu obaneleyo ukwenza iqanda libe lukhuni, kodwa hayi kakhulu kangangokuba lijike libe luhlaza.

Yeyiphi inkqubo epheleleyo yemichiza ejika iqanda libe luhlaza xa liphekwa kakhulu?

Isibini seenkqubo ezinomdla ze biochemical zenzeka phambi kokuba i-iron isebenze nesalfure ukujika iqanda libe luhlaza.

Makhe siye phezu kwabo inyathelo ngenyathelo.

I-ayina kwi-Egg Yolk

Iqanda leqanda lenkukhu liqulethe i-2.7% yentsimbi, isondlo esibalulekileyo kwi-embryo.I-95% yentsimbi ibophelelwe kwi-phosvitin, iprotheni kwi-yolk yeqanda.

Xa i-embryo iqala ukukhula, imithambo yegazi ikhula ibe ngumthubi ukuze ithathe izondlo.

Igazi lineeseli ezibomvu zegazi ezisebenzisa i-iron ukuthwala ioksijini ukuya kwintshontsho elikhulayo.

Intshontsho elingekazalwa liphefumla ioksijini ngaphakathi kweqanda.Ioksijini ingena kwimingxuma emincinane kwiqokobhe leqanda. Iqanda eliqhelekileyo lenkukhu linemingxuma engaphezu kwama-7000 ukuze ioksijini idlule.

Isulfure kwi-Egg White

Sonke siyayazi isulfure njengoko ikuphela koxanduva lwevumba elibi lamaqanda abolileyo.

Iqanda elimhlophe lihlala lijikeleze umthubi njengomaleko okhuselayo obulala iintsholongwane ezingenayo.Izaliswe ngamanzi kunye neeprotheni.Ngaphezu kwesiqingatha seqanda elimhlophe liqukethe iprotein ovalbumin, iprotheni equlethe amaqela asimahla e-sulfhydryl aqulethe isulfure.

I-cysteine

Iiprotheni zamaqanda ngamatyathanga amade e-amino acids.Uninzi lwesulfure kumaqanda enkukhu iqulethwe kwi-amino acid methionine ebalulekileyo, i-precursor ye-amino acid cysteine.

Ebantwini, i-cysteine ​​​​idlala indima ebalulekileyo ekucoleni utywala.Yaduma ngo-2020 xa izazinzulu zafumanisa ukuba i-cysteine ​​​​inokunciphisa iimpawu ezinxulumene notywala, ezifana nesicaphucaphu kunye nentloko.I-cysteine ​​enesulfure emaqandeni iphilisa i-hangover.

Ukufudumeza Iqanda

Xa iqanda libanda, i-vitelline inwebu ngumqobo ogcina imichiza ekwi-yolk yahlukileyo kwiqanda elimhlophe.Kodwa xa uqala ukupheka iqanda, kwenzeka izinto ezimbalwa zomlingo.

Okokuqala, ukushisa kwenza ukuba iiprotheni ezikwiqanda elikrwada zivuleke kwaye zenze amabhondi amatsha omnye komnye.Le nkqubo ibizwa ngokuba yi-denaturation kwaye sisizathu sokuba iqanda libe lukhuni xa ulibilisa.

Ngenxa yako konke ukudityaniswa, isulfure ikhutshwa kwii-amino acids.Iqalisa ukwenza ihydrogen sulfide, igesi enuka njengamaqanda abolileyo.Sinethamsanqa sisixa esincinci segesi, okanye ngekhe singatyi amaqanda, naphakade.

Sonke siyayazi into eyenzekayo ngesoda ukuba siyishiya elangeni ixesha elide: igesi iyabaleka.Kwenzeka okufanayo nge-hydrogen sulfide, izama ukubaleka kwiqanda elimhlophe.Akukho ndawo zininzi apho irhasi inokuhamba khona, ngoko izama ukusasazeka kwiqanda leqanda.

Xa ufudumeza iqanda ixesha elide kwaye kumaqondo obushushu aphezulu, ezinye iiproteni ezinamandla ze-phosvitin kwi-yolk ziqala ukuphuka nge-hydrolysis.I-phosvitin ayikwazi ukubambelela kwintsimbi, kwaye isinyithi sikhutshwa kwi-yolk.

Intsimbi isabela ngeSulfur

I-iron (Fe) esuka kwingqaka idibana nesulfure (S) esuka kwiqanda elimhlophe kwincam ye-yolk, apho i-vitelline membrane idilika khona.Ukusabela kweekhemikhaliivelisa i-ferrous sulfide(FES).

IFerrous sulfide yiiron sulfide enombala omnyama ebonakala eluhlaza xa ixutywe nomthubi.Isiphumo sokugqibela kumbala oluhlaza-omnyama ufumana kwiqanda eliphekwe nzima.