Lihlahisoa

Beta-carotene

Beta-carotene ke carotenoid ea tlhaho e fumanehang haholo merohong le litholoana tse tala le tse mosehla.Beta-carotene ke motsoako oa tetraterpenoid, o nang le lihlopha tse 'nè tsa isoprene habeli.E na le selikalikoe se le seng sa beta-violone pheletsong e 'ngoe le e 'ngoe ea molek'hule.Limolek'hule tse peli tsa vithamine A li ka hlahisoa ke khefu e bohareng.E na le li-bond tse peli tse peli le li-conjugates pakeng tsa litlamo tse peli.Limolek'hule ke khale li kopanya li-chromophore tse peli, kahoo li na le thepa ea ho monya ha bobebe 'me li etsa hore e be mosehla.Mefuta e ka sehloohong ea beta-carotene ke all-trans, 9-cis, 13-cis le 15-cis.Ho na le li-isomers tse fetang 20 tsa beta-carotene, tse sa qhibiliheng ka metsing, 'me li qhibiliha hanyane ka har'a oli ea meroho.Li qhibiliha ka mokhoa o itekanetseng ho aliphatic le monko o monate oa hydrocarbon, o qhibiliha habonolo ka chloroform, ha o tsitsa ka thepa ea lik'hemik'hale, 'me o bonolo ho oxidize khanyeng le ho futhumatsa.

Beta-carotene e ka hlahisoa ka motsoako oa lik'hemik'hale, ho ntšoa ha limela le ho belisoa ha likokoana-hloko.Ho latela mekhoa e fapaneng ea tlhahiso, e ka aroloa ka mekhahlelo e 'meli: motsoako oa lik'hemik'hale oa beta-carotene le beta-carotene ea tlhaho.Hona joale, boholo ba tsona ke lik'hemik'hale.Hobane beta-carotene ea tlhaho e na le khaello e ntle ea anti-chromosomal, phello e khahlanong le mofetše le ts'ebetso e matla ea 'mele, theko ea beta-carotene ea tlhaho e phahame.E feta lik'hemik'hale habeli.

Beta-carotene e tsejoa e le mohloli oa vithamine A. Beta-carotene e entsoeng pele e ne e sebelisoa haholo lijong, litlolo le lihlahisoa tsa bophelo bo botle.Ka nts'etsopele ea toxicology le thekenoloji ea tlhahlobo, lipatlisiso li bontša hore le hoja bohloeki ba beta-carotene bo entsoeng ka mokhoa oa lik'hemik'hale bo batla bo le holimo 'me theko ea tlhahiso e tlaase, ho bonolo ho kenyelletsa lik'hemik'hale tse nyenyane tse chefo lihlahisoa.Ka hona, ka ntlafatso e tsoelang pele ea tsebo, tlhahiso ea tlhaho ea beta-carotene e tla nka boemo bo sebetsang 'marakeng.Empa ka lebaka la thepa e qhibilihang ka mafura ea beta-carotene, tšebeliso ea eona e fokotsehile haholo.Liphuputso tse ling li ntlafalitse ho qhibiliha ha metsi ho beta-carotene ka saponification le emulsification, empa mokhoa ona o na le nako e telele, o na le phello e kholo ho botsitso ba beta-carotene, 'me o na le litšenyehelo tse phahameng.Ho ntšoa ha beta-carotene ea tlhaho, metsoako e hlapollang ka bongata mekhoeng e sebelisoang hona joale, le bothata bo setseng ba lihlapolli tse chefo li ’nile tsa thibela tšebeliso ea lihlahisoa tse ntšoang, e leng se bakileng tšireletso e eketsehileng ea lijo le mathata a tšilafalo ea tikoloho.Ho ntšoa ha beta-carotene e qhibilihang ka metsi ho boetse ho tlalehiloe, empa ho qhibiliha ha metsi ka beta-carotene ho futsanehile, hangata ka thuso ea li-enzyme, kahoo litšenyehelo li phahame 'me kopo e futsanehile.Ha ho bapisoa le mokhoa o tloaelehileng oa ho ntša, mokhoa oa ho ntša ultrasonic o na le melemo ea ho ba bonolo, tekanyo e phahameng ea ho ntša le nako e khutšoanyane ea ts'ebetso.Ka hona, e le mokhoa o mocha oa ho ntša beta-carotene e qhibilihang ka joala, ho ntšoa ha ultrasonic ho na le menyetla e metle ea kopo tšimong ena.

Tšebeliso ea beta-carotene

Joaloka mofuta oa pigment e jeoang e qhibilihang ka oli, beta-carotene e amohetsoe ka mofuthu ke indasteri ea lijo hobane 'mala oa eona o ka koahela mekhoa eohle ea mebala ho tloha ho khubelu ho ea mosehla ka lebaka la ho tsepamisa mohopolo ho fapaneng.E loketse haholo bakeng sa ntshetsopele ea lihlahisoa tsa mafura le lihlahisoa tsa protheine, tse kang margarine, lihlahisoa tse hloekisitsoeng tsa tlhapi, lihlahisoa tsa meroho, li-noodle tsa lijo tse potlakileng joalo-joalo.