Txhua yam dej qab zib, tshuaj kho mob thiab tshuaj pleev ib ce tshaj tawm tias lawv cov khoom muaj nplua nuj nyob hauv qee yam polyphenols lossis proanthocyanidins. Yog li dab tsi yog polyphenols thiab proanthocyanidins?
Polyphenol
Yog hais tias ib qho organic molecule muaj ib pawg hydroxyl txuas ncaj qha mus rau lub nplhaib benzene, cov khoom raug cais raws li Phenol. Yog tias cov khoom siv organic muaj ntau dua ib pawg phenolic hydroxyl, cov tshuaj tuaj yeem hu ua polyphenol. Txhua pawg phenolic hydroxyl txo qis, yog li cov phenolic hydroxyl pawg ntau, ntau qhov chaw ntawm polyphenols tuaj yeem raug oxidized, thiab muaj zog muaj peev xwm los tshem tawm cov pa dawb radicals. Yog li lub tswv yim ntawm polyphenols yog qhov dav heev. Polyphenols muaj dav nyob rau hauv ntau yam zaub thiab txiv hmab txiv ntoo.
Procyanidins, los yog procyanidins, procyanidins, los yog procyanidins, yog polyphenols, tab sis tsis flavonoids. Nws tuaj yeem suav tau tias yog kev sib txuas ntawm ntau tshaj ob lub catechins / epicatechin ua cov chav tsev yooj yim. Lub hom phiaj tseem ceeb ntawm kev sib txuas yog covalent daim ntawv cog lus ntawm carbon atoms 8 thiab 4. Qhov ntawd yog, proanthocyanidins yog aggregates ntawm flavonoids. Yog tias nws muaj 2-5 flavonoids, nws hu ua oligomeric proanthocyanidins. Yog hais tias cov chav tsev muaj ntau tshaj tsib, lawv hu ua oligomeric proanthocyanidins.Apple polyphenols muaj cov txiaj ntsig zoo ntawm superoxide anion, hydroxyl dawb radicals thiab organic dawb radicals, thiaj li txo cov cell puas, ncua kev laus thiab lub neej ntev.
Kua polyphenols los ntawmAPPCHEM (BON)muaj cov nyhuv scavenging zoo ntawm superoxide anion, hydroxyl dawb radicals thiab organic dawb radicals, thiaj li yuav txo tau cell puas, ncua kev laus thiab ntev lub neej. Tsis tas li ntawd, proanthocyanidins muaj nyob rau hauv cov kua polyphenols tuaj yeem cuam tshuam tyrosinase kev ua haujlwm thiab tsim melanin, thiab ua lub luag haujlwm hauv kev ua kom tawv nqaij.