5종 화분의 항산화, 항균 및 항당뇨 활성

다국어 초록 (Multilingual Abstract)

The pollen of acorn [PA], darae [PD], mixed flower [PM], pine tree [PP] and cattail [PC] were collected, and their physicochemical properties and useful bio-activities, such as anti-oxidant, anti-microbial and anti-diabetic activity, of extracts were evaluated. The size of pollen are 25~35 μm and each pollen has particular characteristics in tiny bump, crease, irregular small dent and wings for anemophily pollination. The PA has the highest acidity (0.7), brix (52) and color differences (55.70±0.04) determined by colorimeter among the 5 different pollen. Extraction yields for hot water and ethanol were the highest in PM and followed by PD, PA, PC and PP. The content of total polyphenol (TP) and total flavonoids (TF) in hot water extract of PC showed 29.1 and 19.6 mg/g, whereas the content of TP and TF in ethanol extract of PD were 21.5 and 14.0 mg/g, respectively. Therefore, strong anti-oxidant activities determined by radical scavenging of DPPH, ABTS, nitrite and reducing power were observed in the water extract of PC and the ethanol extracts of PD and PM. The water and ethanol extracts of PC, PD and PM did not showed anti-bacterial and anti-fungal activities at 0.5 mg/disc, but the ethanol extracts of PC and PP showed specific anti-bacterial activities against gram positive bacteria. In anti-diabetic activity assay, the PC and PA extracts inhibited α-glucosidase, whereas the hot water extract of PM and ethanol extracts of PC and PP inhibited β-amylase. Our results suggest that the pollen have high potential as noble resources of anti-oxidant, anti-bacterial and anti-diabetic. These results could be utilized for development of high-value added product of pollen.

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