Biological Activities of Specialized Crops in Namhae
This study was conducted to investigate the antioxidation and biological activities of 5 kinds of specialized crops (asparagus, aloe, curcumin, backnyuncho and garlic) cultivated in Namhae. All crops were freeze dried and then extracted with 10 folds of 60℃ hot-water, for 8 hours. Collected twice extracted water extract were also freeze dried. Dried extract samples were diluted with deionized water for examination. The total phenolics content was the highest observed in asparagus extract to 23.79±0.33 mg/g and total flavonoids of aloe extract was the highest content 17.10±0.05 mg/g. In all samples, DPPH, ABTs and NO radical scavenging activity were depends on the concentration of the extract tended to increase. ABTs radical scavenging activity was the highest conducted 96.10±0.06% effect examined at 2,000 μg/mL in asparagus hot-water extract. NO radical scavenging activity of hot-water extract from curcumin was the highest 250 μg/mL concentration observed in 45.04±1.39%. In all sample, tyrosinase activity was significantly inhibited with increasing of hot-water extract concentration. As a result, α-glucosidase inhibition activity was the highest in hot-water extract from backnyuncho on 31.38±0.94% at 250 μg/mL.
Key words - Asparagus, Aloe, Curcumin, Backnyuncho, Garlic, Biological activity