마이크로웨이브 추출조건에 따른 참나무 겨우살이 추출물의 생리활성
Physiological Properties of Oak Mistletoe (Loranthus yadoriki) Extracts by Microwave Extraction Condition
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The physiological properties of oak mistletoe slice extracts were investigated. The total polyphenol content of mistletoe extracts was 50.28-109-69 mg%, depending on extraction conditions. The polyphenol content increased as extract concentration rose (25 mL/g>50 mL/g>100 mL/g). The electron-donating ability (EDA) of the 60% (v/v) ethanolic extract was 68.88% at 25 mL/g; this was the highest value of all extracts tested (p<0.05). The SOD-like activities of water, 30%, 60%, and 90% (all v/v) ethanolic extracts were 15.24-30.84% lower than those of 1.0% and 0.1% (both w/v) L-ascorbate solutions. Tyrosinase inhibitory activities of all samples were 3.40-30.92% lower than those of 1.0% and 0.1% (both w/v) L-ascorbate solutions. Nitrite-scavenging abilities measured at pH 1.2 and pH 3.0 were highest when the water, and the 30%, 60% and 90% (all v/v) ethanolic extracts, were tested. The results expand our understanding of the physiological properties of oak mistletoe slice extracts.
Abstract
The physiological properties of oak mistletoe slice extracts were investigated. The total polyphenol content of mistletoe extracts was 50.28-109-69 mg%, depending on extraction conditions. The polyphenol content increased as extract concentration rose (25 mL/g>50 mL/g>100 mL/g). The electron-donating ability (EDA) of the 60% (v/v) ethanolic extract was 68.88% at 25 mL/g; this was the highest value of all extracts tested (p<0.05). The SOD-like activities of water, 30%, 60%, and 90% (all v/v) ethanolic extracts were 15.24-30.84% lower than those of 1.0% and 0.1% (both w/v) L-ascorbate solutions. Tyrosinase inhibitory activities of all samples were 3.40-30.92% lower than those of 1.0% and 0.1% (both w/v) L-ascorbate solutions. Nitrite-scavenging abilities measured at pH 1.2 and pH 3.0 were highest when the water, and the 30%, 60% and 90% (all v/v) ethanolic extracts, were tested. The results expand our understanding of the physiological properties of oak mistletoe slice extracts.
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