Ijusi yezithelo enezithelo njengezinto ezingavuthiwe ngokusebenzisa izindlela ezibonakalayo ezifana nokucindezela, i-centrifugation, i-extraction kanye neminye imikhiqizo yejusi, igaywe ibe iziphuzo ezenziwe ngemikhiqizo.Ijusi yezithelo igcina imisoco eminingi esithelweni, njengamavithamini, amaminerali, ushukela, ne-pectin ku-fiber yokudla.
Isikhathi sokulondolozwa kwejusi yezithelo sifushane kakhulu, ikakhulukazi ngenxa yethonya lama-microorganisms, ngoba umsebenzi we-metabolic we-microorganisms kujusi yezithelo usebenza kakhulu, ngakho-ke kubaluleke kakhulu ukukhetha ubuchwepheshe obufanele bokuvala inzalo ukuvimbela ukuwohloka kweziphuzo zejusi yezithelo. .Mayelana nokufakwa inzalo kweziphuzo zejusi, kuyadingeka ukubulala amabhaktheriya e-pathogenic kanye nama-bacterium spoilage kujusi, ukulawulwa kwenani eliphelele lamakoloni kuhlangabezana nezindinganiso zikazwelonke, kanye nokubhujiswa kwama-enzyme kujusi ukuze kube nokulondolozwa okuthile. isikhathi endaweni ethile;enye iwukuvikela ukwakheka komsoco kanye nokunambitheka kwejusi ngangokunokwenzeka ohlelweni lokuvala inzalo.
Endleleni yejusi yesithelo yokuvala inzalo eshisayo, kukhona i-pasteurization (indlela yokushisa ephansi yesikhathi eside), indlela yokuvala inzalo yesikhathi esifushane yokushisa okuphezulu kanye nendlela yokuvala inzalo esheshayo.Umphumela wokushisa ophakeme wesikhathi esifushane wokuvala inzalo wendlela yokuvala inzalo eshisayo ungcono, kodwa izinga lokushisa livame ukuletha imiphumela emibi kwikhwalithi yejusi yesithelo, njengokushintsha kombala, ukunambitheka, ukulahlekelwa umsoco, njll.
Futhi ubuchwepheshe be-pasteurization, ngokushintsha amaprotheni kanye nesakhiwo se-enzyme yamangqamuzana e-microbial, ngaleyo ndlela kuvimbela umsebenzi we-enzyme, ukubulala inani elikhulu lamabhaktheriya e-spoilage kanye nama-bacteria e-pathogenic kujusi yezithelo, kuyilapho inani lokuzwa nokudla okunomsoco lokudla ngeke lithinteke.Awukwazi nje ukufeza inhloso yokuvala inzalo kanye nokunciphisa ama-enzyme ekushiseni okuphansi, kodwa futhi ukusiza ukugcina umbala wejusi yezithelo, iphunga, ukunambitheka, umsoco kanye nokusha, ukuze kuhlangatshezwane nezidingo zabathengi abakhuthaza ukudla "kwemvelo nokunempilo".Ngakho-ke, ukufunda ubuchwepheshe be-pasteurization kubaluleke kakhulu ekuphepheni, umbala kanye nokudla kwejusi yezithelo ezintsha.
Kuyaphawuleka ukuthi i-pasteurization ijusi ekheniwe noma ebhodleleni, uma ijusi yebhodlela lengilazi, idinga ukucabangela inkinga yokushisa nokushisa kwangaphambili, ukuvimbela umehluko wokushisa mkhulu kakhulu futhi kuholele ekuqhumeni kwebhodlela, ngakho umshini wethu we-pasteurization uhlukaniswe izigaba ezine, okungukuthi ukushisa kuqala, ukuvala inzalo, ukupholisa kuqala kanye nokupholisa, kodwa igama eliphelele umshini wokugcwalisa ijusi.
Isikhathi sokuthumela: Oct-10-2022