Umbala obomvu wesikhumba sediliya
Umbala obomvu wesikhumba sediliya, okwaziwa ngokuba yi-grape skin extract, ngumbala wendalo osekelwe kwi-anthocyanin osuka kwi-grape pomace—izikhumba eziseleyo emva kokuyijusisha okanye ukwenza iwayini. Inkqubo yokuvelisa ibandakanya ukususa imbewu kunye nokungcola kwi-pomace, kulandele ukukhutshelwa ngamanzi okanye i-ethanol yodidi lokutya, ukuhluza, ukugxila, kunye namanye amanyathelo okucoca.
Ezinye iimveliso zicutshungulwa zibe yimpuphu ngokuyitshiza ngokongeza izinto ezincedisayo ezifana ne-maltodextrin. Izinto eziphambili kuyo ziquka i-anthocyanin glucosides ezifana ne-malvidin, i-peonidin, i-delphinidin, kunye ne-petunidin-3'-glucoside, kunye ne-flavonoids. Ezi zinto azichazi kuphela amandla ayo okufaka umbala kodwa zikwanegalelo kwiimpawu zayo ze-antioxidant.
Iimpawu ze-physicochemical ze-divai-skin red colorant zahlukile: imbonakalo yayo isusela kubomvu obunzulu ukuya kumgubo omfusa-bomvu, kunye neefom zolwelo kunye ne-paste ezifumanekayo, ezihamba nevumba elincinci elibonakalayo. Inyibilika kakhulu emanzini, kwi-ethanol, kwi-propylene glycol, nakwezinye izinyibilikisi kodwa ayinyibiliki kumafutha, kwiioyile, nakwi-ethanol epheleleyo. Umbala wayo uxhomekeke kakhulu kwi-pH—ubonisa umbala ozinzileyo, obomvu oqaqambileyo ukuya komfusa-bomvu phantsi kweemeko ze-asidi, utshintshela kuluhlaza okwesibhakabhaka kwiindawo ezingathathi hlangothi, kwaye uguquke ube luhlaza ongazinzanga kwiindawo ze-alkaline.
Ukongeza, ayinyamezeli ukukhanya nobushushu; ukuvezwa ixesha elide ekukhanyeni okunamandla okanye kumaqondo obushushu aphezulu kunokubangela ukuba umbala uphele. Xa kukho ii-ion zesinyithi ezifana nentsimbi kunye nobhedu, inokuba mnyama ibe ngumbala omfusa-mdaka, kwaye ithambekele ekutshintsheni umbala ngenxa ye-oxidation, ngamandla aphakathi ombala kunye nokumelana nobushushu ngokubanzi.














