科研之友
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摘要
Selfassembling by sonochemical processing of the flavonoid extracts on chitosan was studied related to the capacity of free radicals scavenging. The assembling of the flavonoid extract on chitosan, activated in ultrasonic field in DMSO solution, rise to a synergic activity with improved scavenging rate of free radicals. The flavonoidic extract was obtained from Crataegus monogyna Jacq species by solvo-thermal extraction at 150KPa in a super-critical high pressure reactor. The antioxidant properties measured by chemiluminescence technique and correlated with AFM topography and FT-IR spectroscopy showed a specific interaction between hydroxyl groups of flavonoids with amide I groups from chitosan leading to new potential applications in pharmaceutical area of the biohybrids made of biopolymer and natural extracts.
- 出版日期2011-12
