Mbeu ya mphesa ndi mtundu wa polyphenols wotengedwa ku njere za mphesa.Amapangidwa makamaka ndi procyanidins, makatekini, epicatechins, gallic acid, epicatechin gallate ndi ma polyphenols ena.
khalidwe
Mphamvu ya Antioxidant
Kutulutsa kwa mphesa ndi chinthu chachilengedwe.Ndi imodzi mwama antioxidants omwe amagwira ntchito bwino kuchokera ku zomera.Mayeso akuwonetsa kuti mphamvu yake ya antioxidant ndi 30 ~ 50 nthawi ya vitamini C ndi vitamini E.
ntchito
Procyanidins ali ndi ntchito yamphamvu ndipo amatha kuletsa ma carcinogens mu ndudu.Kuthekera kwawo kutenga ma radicals aulere mu gawo lamadzi ndi 2 ~ 7 nthawi zambiri kuposa za antioxidants wamba, monga α- Ntchito ya tocopherol ndi yoposa kawiri.
kuchotsa
Anapezeka kuti ambiri zomera zimakhala, zili proanthocyanidins mu mphesa mbewu ndi paini makungwa Tingafinye anali apamwamba, ndi waukulu njira yopezera Proanthocyanidins ku mphesa mbewu anali zosungunulira m'zigawo, mayikirowevu m'zigawo, akupanga m'zigawo ndi supercritical CO2 m'zigawo.Mbeu ya mphesa ya proanthocyanidins ili ndi zonyansa zambiri, zomwe zimafunikira kuyeretsedwa kwina kuti ma proanthocyanidins azikhala oyera.Njira zoyeretsera zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo kuchotsa zosungunulira, kusefera kwa membrane ndi chromatography.
Ethanol ndende anali ndi chidwi kwambiri pa mlingo wa m'zigawo za mphesa proanthocyanidins, ndi m'zigawo nthawi ndi kutentha analibe kwambiri pa m'zigawo mlingo wa mphesa proanthocyanidins.The momwe akadakwanitsira m'zigawo magawo anali motere: Mowa ndende 70%, m'zigawo nthawi 120 min, olimba-zamadzimadzi chiŵerengero 1:20.
Kuyesa kwa static adsorption kukuwonetsa kuti kuchuluka kwapamwamba kwambiri kwa hpd-700 kwa proanthocyanidins ndi 82.85%, kutsatiridwa ndi da201, yomwe ndi 82.68%.Pali kusiyana kochepa.Komanso, mphamvu yotsatsa ya ma resins awiriwa a proanthocyanidins nawonso ndi omwewo.Pakuyesa kwa desorption, utomoni wa da201 umakhala ndi chiwopsezo chachikulu kwambiri cha procyanidin, chomwe ndi 60.58%, pomwe hpd-700 ili ndi 50.83% yokha.Kuphatikizidwa ndi kuyesa kwa adsorption ndi desorption, da210 resin idatsimikiziridwa kuti ndiyo yabwino kwambiri ya adsorption resin yolekanitsa ma procyanidins.
Kupyolera mu kukhathamiritsa ndondomeko, pamene ndende ya proanthocyanidins ndi 0.15mg/ml, otaya mlingo ndi 1ml/mphindi, 70% Mowa njira ntchito ngati luent, otaya mlingo ndi 1ml/mphindi, ndi kuchuluka kwa eluent ndi 5bv, Tingafinye. Ma proanthocyanidins ambewu yamphesa amatha kuyeretsedwa koyambirira.