Ingulube ibilokhu iyingxenye eyinhloko yenyama yetafula lezakhamuzi, futhi iwumthombo obalulekile weprotheyini yezinga eliphezulu.Eminyakeni yamuva, olunzuluukuzalanisa ingulubeibilokhu iphishekela kakhulu izinga lokukhula, izinga lokuguqulwa kokuphakelayo, izinga lenyama engenamafutha, umbala okhanyayo wengulube, ukunambitheka okubi nezinye izinkinga, futhi ingulube ithambile futhi imnandi, ethandwa umphakathi.Yiziphi izici ezithinta ukunambitheka kwengulube?

1. Izinhlobonhlobo

Njengamanje, ama-hydrocarbon, ama-aldehydes, ama-ketone, utshwala, ama-esters, ama-furan, i-pyrazine nezinye izinto eziguquguqukayo ziye zatholwa engulube.Iningi lalezi zingxenye ziyefana ezinhlobonhlobo zenyama, kodwa okuqukethwe kwazo kuhlukile.Isibonelo, izinhlobo zezingulube ingulube iqukethe izanduleli zokunambitheka okucebile njengoshukela, amafutha kanye namaprotheni.Izinhlobo zezingulube zendawo zikhuliswa abantu abasebenzayo bezwe lethu ngokuzalanisa isikhathi eside futhi zingamabhange abalulekile ezakhi zofuzo.Kufanele sinikeze umdlalo ogcwele izinzuzo zezinhlobo zezingulube zendawo futhi sihlakulele uhlobo lwezinhlobo zezingulube ezinokunambitheka okuhle.

2. Ubudala nobulili

Inyama yengulube ithintwa ubudala bengulube.Amachwane engulube, ngenxa yemicu yawo yemisipha emihle kanye nokungavuthwa okuncane kokuxhumanisa kwezicubu ezixhumeneyo, masha futhi athambile.Ngokukhula kweminyaka, ukuxhumanisa okuvuthiwe kwezicubu ezixhumene kancane kancane kuyakhula, futhi imicu yemisipha iba mikhulu, okuholela ekwehleni kwesisa.Ezinye izifundo zibonise ukuthi izinga lenyama liyathuthuka kancane kancane ngokukhula kweminyaka, kodwa livame ukuzinza ngemva kwezinsuku ezingu-220 ubudala, okudinga ukunakwa iminyaka yokuhlatshwa kwezingulube ekusebenzeni kokukhiqiza.Ukuhlaba ngaphambi kwesikhathi akuhambisani nokuthuthukiswa kwezinga lenyama, futhi ukuhlaba sekwephuzile kuzomosha izindleko zokukhiqiza futhi ngeke kuthuthukise ikhwalithi yenyama.Ikhwalithi yengulube ayithinteki kuphela ubudala, kodwa futhi nobulili bezingulube.I-cross section granules ye-boar muscle fibers mikhulu, futhi iqukethe i-androstenone, i-skatole, i-polyunsaturated fatty acids nezinye izinto ezithinta ukunambitheka.

3. Ukondla

Ukondlaikakhulukazi ihlanganisa izinga lokudla okuphakelayo, ukwakheka kokuphakelayo kanye nokuphathwa kokudla.Izinga lokudla okunomsoco kungenye yezinto ezithinta ikhwalithi yengulube.Ukondla ukudla okunamandla aphezulu kanye namaprotheni aphansi, ingulube inamafutha amaningi kanye nekhwalithi yenyama ethambile;Ukondla ukudla okunamaprotheni amaningi namandla aphansi, inyama ihlangene futhi okuqukethwe kwamafutha kuphansi;Ama-amino acid afana ne-lysine, i-threonine ne-cysteine ​​​​abuye abe nomthelela omkhulu kwikhwalithi yenyama, ngakho-ke kufanele kuqashelwe inani lokwengezwa kwi-ration.Ngaphezu kwezinga lezakhi zokudla, ukwakheka kokuphakelayo kuzophinde kuthinte ikhwalithi yengulube.Ukondla ummbila omningi kuzokwenza ingulube ibe phuzi, ikakhulukazi ngoba i-pigment ephuzi emmbila ifakwe emafutheni ezingulube nezicubu zemisipha;I-Thiopropene, i-propylene disulfide, i-allicin, i-aromatics nezinye izinto ezitholakala ekudleni kuzodala iphunga elikhethekile lengulube futhi kuthinte ikhwalithi yenyama.Ukwengezwa kwe-Eucommia ulmoides kushiya kukhishwe njengesengezo sokuphakelayo ekuphakeleni kungasiza ekuhlanganiseni i-collagen futhi kuthuthukise ikhwalithi yengulube.Ngaphezu kwalokho, ikhwalithi yengulube izophinde ithinteke izindlela zokudla.Isibonelo, kunenkundla yezemidlalo ekhethekile yezingulube.Ukwandisa inaniokuphakelayo okuluhlazanokudla okumahhadla kungathuthukisa izinga lengulube.

4. Ezinye izici

Izici zokuhlatshwa ngaphambi kokuhlatshwa njengendlela yokuhlaba, isikhathi sokulinda, isikhathi sokuhamba, kanye nokwelashwa kwangemuva kokufa okufana nezinga lokushisa lechibi elishisayo nendlela yokupheka kuzothinta ikhwalithi yengulube.Ngokwesibonelo, uma kuqhathaniswa nokushaqeka kukagesi, ukuphefumula isikhutha kunganciphisa kakhulu izicubu ezimhlophe;Ukunciphisa isikhathi sokuthutha kanye nokwandisa isikhathi sokuhlaba kunganciphisa ukucindezeleka kwezingulube;Izinga lokushisa le-scalding pool akulula ukuthi libe phezulu kakhulu.Uma izinga lokushisa lidlula ku-60 ℃, ingulube izoshiswa futhi igoqwe, okuzothinta ukunambitheka kwengulube.

Ukufingqa, ekukhiqizweni kwangempela, kufanele sikhethe izinhlobo ezihlukene, siqinise ukuphathwa kokuphakelayo ngokwesayensi, sinciphise ingcindezi ngaphambi kokuhlatshwa kanye nezinye izici zomthetho ukuze siqinisekise ikhwalithi yenyama engcono kakhulu.