Ngingaligwema kanjani iqanda ekubeni libe luhlaza lapho lipheka?

Ukuze ugweme isikhuphasha seqanda ekubeni sibe luhlaza lapho ubilisa:

• gcina amanzi emazingeni okushisa abilayo noma ngaphansi kwamazinga okushisa abilayo ukuze uvimbele ukushisa ngokweqile
• sebenzisa i-pan enkulu futhi ugcine amaqanda endaweni eyodwa
• cisha ukushisa lapho amanzi efinyelela emazingeni okushisa abilayo
• ungawavumeli amaqanda emanzini isikhathi eside; Imizuzu eyi-10-12 yanele amaqanda osayizi ophakathi
• pholisa amaqanda ngamanzi abandayo ngokushesha ngemva kokupheka ukuze umise noma yikuphi ukusabela kwamakhemikhali ukushintsha isikhuphashi sibe luhlaza

Okubalulekile ukufaka ukushisa okwanele ukwenza iqanda libe lukhuni, kodwa hhayi kakhulu kangangokuthi liphenduka libe luhlaza.

Iyiphi inqubo yamakhemikhali ephelele eshintsha isikhuphasha seqanda sibe luhlaza lapho sivuthwa ngokweqile?

Izinqubo ezimbalwa ezithokozisayo zamakhemikhali ezinto eziphilayo zenzeka ngaphambi kokuba i-ayoni ikwazi ukusebenzisana nesibabule ukuze iguqule isikhuphashi seqanda sibe luhlaza.

Ake sidlule phezu kwabo isinyathelo ngesinyathelo.

I-ayina ku-Egg Yolk

I-yolk yeqanda lenkukhu iqukethe u-2.7% we-iron, isakhi esibalulekile ku-embryo. I-95% ye-iron iboshelwe ku-phosvitin, iphrotheni e-yolk yeqanda.

Lapho umbungu uqala ukukhula, imithambo yegazi iyakhula ibe yi-yolk ukuze ilande imisoco.

Igazi linamangqamuzana abomvu egazi asebenzisa i-ayoni ukuthwala umoya-mpilo ephusheni elikhulayo.

Itshwele elingakazalwa empeleni liphefumula umoya-mpilo ngaphakathi kweqanda. Umoya-mpilo uza ngezimbotshana ezincane egobolondweni leqanda. Iqanda lenkukhu elijwayelekile linezimbotshana ezingaphezu kuka-7000 ukuze umoya-mpilo udlule kuwo.

Isibabule Esimhlophe Kweqanda

Sonke siyasazi isibabule njengoba kuyisona sodwa esibangela iphunga elimnandi lamaqanda abolile.

Iqanda elimhlophe lihlala lizungeze i-yolk njengongqimba oluvikelayo olubulala amagciwane angenayo. Igcwele amanzi namaprotheni. Ngaphezu kwengxenye yomhlophe weqanda iqukethe iphrotheni i-ovalbumin, iphrotheni equkethe amaqembu amahhala e-sulfhydryl aqukethe isulfure.

I-cysteine

Amaprotheni amaqanda amaketanga amade ama-amino acid. Iningi lesulfure emaqandeni enkukhu liqukethwe ku-amino acid i-methionine ebalulekile, isandulela se-amino acid cysteine.

Kubantu, i-cysteine ​​​​idlala indima ebalulekile ekugayweni kotshwala. Yaduma ngo-2020 lapho ososayensi bethola ukuthi i-cysteine ​​​​ingidambisa izimpawu ze-hangover ezihlobene notshwala, njengesicanucanu nekhanda. I-cysteine ​​equkethe isulfure emaqandeni yelapha ama-hangover.

Ukushisa Iqanda

Lapho iqanda libanda, ulwelwesi lwe-vitelline luwumgoqo ogcina amakhemikhali akusikhuphasha ehlukene neqanda elimhlophe. Kodwa uma uqala ukupheka iqanda, kwenzeka izinto ezimbalwa zemilingo.

Okokuqala, ukushisa kwenza amaprotheni aseqanda eliluhlaza avuleke futhi akhe izibopho ezintsha komunye nomunye. Le nqubo ibizwa ngokuthi i-denaturation futhi iyisizathu esenza iqanda libe lukhuni uma ubililisa.

Ngenxa yakho konke ukugoqa, isulfure ikhishwa kuma-amino acid. Iqala ukwakha i-hydrogen sulfide, igesi enuka njengamaqanda abolile. Sinenhlanhla ukuthi inani elincane kangaka legesi, noma besingeke siwadle amaqanda, njalo.

Sonke siyazi ukuthi kwenzekani ngesoda uma sikushiya elangeni isikhathi eside kakhulu: igesi iyabaleka. Okufanayo kwenzeka nge-hydrogen sulfide, izama ukuphunyuka kumhlophe kweqanda. Azikho izindawo eziningi kakhulu lapho igesi ingahamba khona, ngakho izama ukusakazeka ku-yolk yeqanda.

Uma ushisa iqanda isikhathi eside ngokwanele futhi emazingeni okushisa aphezulu, amaprotheni e-phosvitin aqinile ku-yolk aqala ukuphuka nge-hydrolysis. I-phosvitin ayikwazi ukubambelela ensimbi, futhi insimbi ikhishwa ku-yolk.

I-ayoni iphendulana nesibabule

I-iron (Fe) evela ku-yolk ihlangana nesulfure (S) evela eqandeni elimhlophe emaphethelweni e-yolk, lapho i-vitelline membrane ihlukana khona. Ukusabela kwamakhemikhaliikhiqiza i-ferrous sulfide(FES).

I-Ferrous sulfide iyi- iron sulfide enombala omnyama ebukeka iluhlaza uma ixutshwe nesikhupha esiphuzi. Umphumela wokugcina uwukuguquguquka kombala okuluhlaza okotshani okuthola eqandeni eliphekwe kanzima.

Eminye imithombo ithi okuluhlaza kuyi-ferric sulfide, kodwa lokho okokwenziwa okungazinzile okungenzeki ngokwemvelo futhi kubola ku-ferrous sulfide.

Yiziphi izici ezandisa ingozi yokuthi isikhupha seqanda sibe luhlaza?

Ingozi yokushintsha umbala kweqanda elimpunga-luhlaza iyanda lapho:

• iqanda liphekwe emazingeni okushisa aphezulu kakhulu
• iqanda lishiselwa isikhathi eside
• iqanda ligcinwa isikhathi eside ngaphambi kokupheka
• i-egg yolk inamazinga aphezulu e-pH
• upheka amaqanda epanini lensimbi

Izinga le-pH leqanda liyakhula lapho iqanda likhula. I-pH ingashintshela kumanani e-alkaline, ne-carbon dioxide eshiya iqanda ezinsukwini ezimbalwa. Lokhu kwandisa ingozi yokuthi insimbi yesithungu ihlangane ne-sulphur emhlophe yeqanda.

Njengoba i-iron iguqula iqanda libe luhlaza, kungcono ukugwema ukuwapheka ku-cast iron skillet.

Uhlobo lwenkukhu , usayizi weqanda, umbala weqanda, kanye nekhwalithi yeqanda akuthinti ukuguquguquka okuluhlaza kwesikhuphashi.

Isifinyezo

Ukuguquguquka okumpunga-luhlaza kwesikhupha seqanda emaqandeni abilisiwe kubangelwa ukuphekwa ngokweqile. Ukushisa kwenza i-ayoni esemaqanda isabelane nesulfure emhlophe kwamaqanda. Umphumela we-ferrous sulfide emnyama ubukeka uluhlaza phezu kwesikhupha seqanda esiphuzi.

Ukuze ugweme i-tinge eluhlaza, kuyisihluthulelo sokuvimbela insimbi eku-yolk ukuthi ingakhululwa. Yehlisa izinga lokushisa lamanzi futhi uqinisekise ukuthi iqanda lishisisa kuphela isikhathi eside ngokwanele ukwenza kube nzima. Yipholise ngokushesha ngamanzi abandayo ngemva kokupheka.