Iti emnyama, eyaziwa ngokuba incasa yayo etyebileyo nenamandla, sisiphene esithandwayo esinandinwe zizigidi kwihlabathi liphela. Omnye wemiba enomdla yeti emnyama ngumbala obomvu obonakalayo xa uvelisiwe. Eli nqaku lijolise ekuphoseni izizathu zesayensi emva kombala obomvu weti emnyama, ukuphalaza ukukhanya kwiinkqubo zekhemikhali ezinegalelo kule meko.
Umbala obomvu weti emnyama unokuxelwa bubukho bamakhonkco athile olwenziwayo ngotshintsho lwemichiza ngexesha lenkqubo yokwenza iti. Iimpawu eziphambili ezinombala wombala obomvu zii-nyaarbigins kunye nezafa zafa, eziyenziwa ngokuxinana kwe-oxidols ngexesha lolwaphulo-mthetho okanye inkqubo ye-oxidation entsokwa emnyama.
Ngexesha lokuveliswa kweti emnyama, amagqabi iti aphathwa uthotho lweenkqubo, kubandakanya ukunye, ukujikeleza, oxidation, kunye nokomisa. Ngexesha lenqanaba le-oxidation ukuba i-tia polyphenols, ngakumbi ama-ATHIDK, phantsi kwe-oxivido oxAifafans. Ezi computer zinoxanduva lombala obomvu obomvu kunye ne-flavouch eqhelekileyo yeti emnyama.
I-Theartoubigins, ngokukodwa, i-polyphenali enkulu ye-polydish-brown ngombala. Zenziwa ngokunyanzeliswa kwe-calymering ye-catechins kunye nezinye iiflavonoids ezikhoyo kumagqabi eti. Kwelinye i-Theavins, kwelinye icala, amancinci amancinci amanzi anegalelo kumbala obomvu weti emnyama.
Umbala obomvu weti emnyama uqiniswe ngakumbi ngobukho beAntshocynins, ezikwimifanekiso eqingqiweyo yamanzi efumaneka kwezinye iitiyo. Ezi pigment zinokudlulisela i-hie ebomvu kwi-tie ebomvu, yongeza kwiprofayile yayo yombala.
Ukongeza kwinguqu yekhemikhali eyenzeka ngexesha lokuqhubela kweti yeti, ezifana nezityalo zeti, iimeko zokukhula, kunye neendlela zokulungisa zinokuba nefuthe kumbala obomvu weti emnyama. Umzekelo, inqanaba le-oxidation, ixesha lokubetheka, kunye neqondo lobushushu apho amagqabi eti agqityiweyo anokuchaphazela umbala wokugqibela weti.
Ukuqukumbela, umbala obomvu weti emnyama sisiphumo sokungenelwa okuntsonkothileyo kweendlela zekhemikhali kunye neenkqubo ezichaphazelekayo kwimveliso yazo. I-Thearubigin, iAisavins, kwaye ii-antshocynins zezona zinto ziphambili kwi-hue ebomvu ye-hie emnyama, kunye nokuqulunqwa kwabo kunye nokunxibelelana kwawo ngexesha lokuhambisa i-ties.
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Ixesha lokuposa: I-Mey-09-2024
