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.

I-Sulfur 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 i-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 ezomeleleyo ze-phosvitin kwi-yolk ziqala ukuqhekeka 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).

I<em>Ferrous sulfide yi<em>iron sulfide enombala omnyama ebonakala eluhlaza xa ixutywe nomthubi. Isiphumo sokugqibela kumbala oluhlaza-omnyama ufumana kwiqanda eliphekwe nzima.

Eminye imithombo ibanga ukuba uhlaza yiferric sulfide, kodwa leyo yimathiriyeli eyenziweyo engazinzanga engenzekiyo kwindalo kwaye ibole kwi-ferrous sulfide.

Zeziphi izinto ezandisa umngcipheko wokuba umthubi weqanda ujike ube luhlaza?

Umngcipheko wokujika kombala ongwevu-luhlaza womthubi weqanda uyanda xa:

• iqanda liphekwe kumaqondo aphezulu kakhulu
• iqanda lifudunyezwa ixesha elide
• iqanda ligcinwa ixesha elide phambi kokupheka
• umthubi weqanda une pH-amanqanaba aphezulu
• upheka amaqanda epanini yentsimbi

Amanqanaba e-pH eqanda ayanda xa iqanda likhula. I-pH inokutshintshela kumaxabiso e-alkaline, kunye ne-carbon dioxide eshiya iqanda kwiintsuku ezimbalwa. Oku kwandisa ingozi yokuba i-iron yomthubi idibane nesalfure emhlophe yeqanda.

Ekubeni isinyithi siguqula iqanda eliluhlaza, kungcono ukunqanda ukuwapheka kwi-cast iron skillet.

Udidi lwenkukhu, ubungakanani beqanda, umbala weqanda, kunye nomgangatho weqanda akuchaphazeli ukujika kombala oluhlaza womthubi.

Isishwankathelo

Ukujika kombala ongwevu-luhlaza womthubi weqanda kumaqanda aphekwe nzima kwenziwa kukuphekwa kakhulu. Ubushushu benza ukuba i-iron ekwimidiza yeqanda isabele kunye nesalfure kumhlophe weqanda. Isiphumo sobumnyama se-ferrous sulfide sibonakala siluhlaza phezu kweqanda elimthubi.

Ukuze ugweme i-tinge eluhlaza, kuyisitshixo ukukhusela intsimbi kwi-yolk ukuba ikhutshwe. Yehlisa ubushushu bamanzi kwaye uqinisekise ukuba iqanda lifudunyezwa kuphela ixesha elide ngokwaneleyo ukuze libe lukhuni. Ngoko nangoko yipholise ngamanzi abandayo emva kokupheka.