Iimveliso

Beta-carotene

I-Beta-carotene yi-carotenoid yendalo efumaneka ngokubanzi kwimifuno eluhlaza kunye nephuzi kunye neziqhamo.I-Beta-carotene yikhompawundi ye-tetraterpenoid, equkethe iibhondi ezine ze-isoprene ezimbini.Ineringi enye ye-beta-violone ekupheleni kwemolekyuli.Iimolekyuli ezimbini zevithamin A zinokuveliswa ngekhefu eliphakathi.Inamabhondi aphindwe kabini kunye ne-conjugates phakathi kweebhondi ezimbini.Iimolekyuli kudala zidibanisa iichromophores zebhondi ephindwe kabini, ngoko ke zinepropathi yokufunxa ukukhanya kwaye zizenze zibetyheli.Iifom eziphambili ze-beta-carotene zizo zonke-trans, i-9-cis, i-13-cis kunye ne-15-cis.Kukho ngaphezu kwe-20 isomers ye-beta-carotene, enganyibiliki emanzini kwaye inyibilika kancinane kwi-oyile yemifuno.Zinyibilika ngokuphakathi kwi-aliphatic kunye ne-aromatics hydrocarbons, zinyibilika ngokulula kwi-chloroform, azinzanga kwiipropathi zekhemikhali, kwaye kulula ukuzikhupha ekukhanyeni nasekufudumeni.

I-Beta-carotene inokuveliswa ngokuhlanganiswa kweekhemikhali, ukutsalwa kwezityalo kunye nokuvundiswa kwe-microbial.Ngokweendlela ezahlukeneyo zokuvelisa, inokwahlulwa ibe ngamacandelo amabini: i-chemical synthesis ye-beta-carotene kunye ne-beta-carotene yendalo.Okwangoku, uninzi lwazo ziikhemikhali.Ngenxa yokuba i-beta-carotene yendalo ine-anti-chromosomal aberration, i-anti-cancer effect kunye nomsebenzi oqinileyo we-physiological, ixabiso le-beta-carotene yendalo liphezulu.Iphindwe kabini kunemichiza.

I-Beta-carotene yaziwa ngokuba ngumthombo wevithamin A. Ngaphambili i-beta-carotene eyayisenziwa ngaphambili yayisetyenziswa kakhulu ekutyeni, kwizinto zokuthambisa kunye neemveliso zempilo.Ngophuhliso lwe-toxicology kunye neteknoloji yokuhlalutya, uphando lubonisa ukuba nangona ukucoceka kwe-beta-carotene eyenziwe yindlela yeekhemikhali kuphezulu kwaye ixabiso lokuvelisa liphantsi, kulula ukubandakanya inani elincinci leekhemikhali ezinobuthi kwiimveliso.Ngoko ke, ngokuphuculwa okuqhubekayo kolwazi, ukukhutshwa kwendalo kwe-beta-carotene kuya kuthatha indawo esebenzayo kwimarike.Kodwa ngenxa yepropathi enyibilikayo ye-beta-carotene, umda wokusetyenziswa kwayo ulinganiselwe kakhulu.Ezinye izifundo ziye zaphucula ukunyibilika kwamanzi kwe-beta-carotene nge-saponification kunye ne-emulsification, kodwa le ndlela inexesha elide, inempembelelo enkulu ekuzinzeni kwe-beta-carotene, kwaye ineendleko eziphezulu.Ukutsalwa kwe-beta-carotene yendalo, izinyibilikisi ze-organic kwiindlela ezininzi ezisetyenziswayo ngoku, kunye nengxaki eshiyekileyo yezinyibilikisi eziyityhefu bezithintele ukusetyenziswa kweemveliso zokutsalwa, okukhokelela kukhuseleko lokutya ngakumbi kunye neengxaki zokungcoliseka kwendalo.Ukukhutshwa kwe-beta-carotene e-soluble yamanzi kuye kwabikwa kwakhona, kodwa i-solubility yamanzi ye-beta-carotene impofu, ngokuqhelekileyo ngoncedo lwe-enzymes, ngoko ixabiso liphezulu kwaye isicelo sibi.Xa kuthelekiswa nendlela eqhelekileyo yokukhutshwa, indlela yokukhutshwa kwe-ultrasonic ineenzuzo zokulula, izinga eliphezulu lokukhupha kunye nexesha elifutshane lokusebenza.Ngoko ke, njengendlela entsha yokukhupha i-beta-carotene e-alcohol-soluble, i-ultrasonic extraction inamathuba amahle okusebenza kule ntsimi.

Ukusetyenziswa kwe-beta-carotene

Njengohlobo lwe-pigment ye-oyile enyibilikayo etyiwayo, i-beta-carotene yamkelwe ngokufudumeleyo lishishini lokutya kuba umbala wayo unokugubungela zonke iinkqubo zemibala ukusuka ebomvu ukuya kumthubi ngenxa yokuxinana kwayo okwahlukileyo.Kukulungele kakhulu ukuphuhliswa kweemveliso ezinamafutha kunye neeprotheni, ezifana ne-margarine, i-fish pulp ecocekileyo imveliso, iimveliso zemifuno, i-noodle yokutya okukhawulezayo kunye nokunye.