In an attempt to find natural sources of antioxidants and whitening agents, Comparisons of the antioxidative and tyrosinase inhibitory activities of various ethanol extracts of Astragali Radix, Atractylodis Rhizoma Alba and Acanthopanacis Cortex were carried out. Comparison of the four ethanol extracts revealed that, Astragali Radix had the highest electron-donating ability(72.5%) and the highest SOD-like ability(26.1%). The xanthine oxidase experiment exhibited a hindrance effect of 88.5% in Atractylodis Rhizoma Alba, 81.1% in Acanthopanacis Cortex, 75.8% in Astragali Radix. A tyrosinase inhibitory activity assay was conducted to evaluate the whitening effects of the extracts, The tyrosinase inhibitory activity was 42.1% in the Acanthopanacis Cortex, 37.2% in the Atractylodis Rhizoma Alba, 6.0% in the Astragali Radix. Based on these results, we suggest that the ethanol extracts of Astragali Radix, Atractylodis Rhizoma Alba and Acanthopanacis Cortex can be used as food and cosmetic ingredients.

The purpose of this study is to measure the changes of regional cerebral blood flow (rCBF) and blood pressure (BP) of Cortex Acanthopanacis in rats, and to determine the effect of Cortex Acanthopanacis on phenylephrine (PE) induced contraction of isolated rat thoracic aorta. The measurement was continually monitored by laser-doppler flowmeter (Transonic Instrument, USA) and pressure transducer (Grass, USA) in anesthetized adult Sprague-Dawley rats through the data acquisition system composed of MacLab and Macintosh computer. Contractile force was measured with force displacement transducer under 1.5 g loading tension. The result of this experiment was as following; 1. Cortex Acanthopanacis did not effect the changes of rCBF and blood pressure significantly. 2. Contractions evoked by phenylephrine were decreased significantly by Cortex Acanthopanacis 3. L-NNA, ODQ, atropine and indomethacin significantly altered the relaxation of Cortex Acanthopanacis. 4. Propranolol did not change the relaxation of Cortex Acanthopanacis. These results indicate that Cortex Acanthopanacis did not change the rCBF and BP, but Cortex Acanthopanacis can relax PE induced contraction of isolated rat thoracic aorta and that this increasing contraction related to endothelium and various mechanism.

본 연구는 오가피순과 두릅의 소비 확대와 가공품 개발의 전처리로 필수적인 blanching 조건을 설정하기 위해 blanching 온도와 식염의 농도에 따른 품질 변화와 관능적 특성을 평가하고자 하였다. 또한 해동조건에 따른 이화학적 및 관능적 특성을 평가하여 오가피순과 두릅의 품질을 향상시킬 수 해동조건을 설정하고자 하였다. Blanching은 식염 첨가량(무첨가, 1%, 2% 첨가)과 blanching 시간(4분, 7분)을 달리하였으며, 해동