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KMID : 1098420110190020097
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Korean Journal of Medicinal Crop Science
2011 Volume.19 No. 2 p.97 ~ p.102
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Enhancement of Whitening Effects of Lithospermum erythrorhizon Extracts by Ultra High Pressure
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Kim Ji-Seon
Jeong Myoung-hoon
Choi Woon-Yong
Seo Yong-chang
Ma Choong-Je
Ahn Ju-Hee
Kim Nam-Seong
Hwang Baik
Cho Jeong-Sub
Lee Hyun-yong
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Abstract
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In this study, whitening activity of Lithospermum erythrorhizon extracts were investigated according to several extraction processes: water extraction at (WE100) and (WE60), 70% ethyl alcohol extraction (EE) and ultra high pressure extraction (HPE) at 500 MPa for 30 minutes at . The extracts from ultra high pressure extraction showed the highest tyrosinase inhibition and melanogenesis inhibition activities as 52% and 79.5%, respectively, in adding than others extraction processes. HPE extracts also showed the strong reducing power as 3.19 that absorbance at 450 mm. The contents of polyphenol in WE100, we measured as in adding . Extracts have a high total flavonoid contents by HPE as at . We can conclude that better whitening activity of extracts from high pressure extraction was due to high antioxidant activities which could be extracted by higher polyphenol and flavonoid contents in HPE than others.
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KEYWORD
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Lithospermum erythrorhizon, High Pressure, Whitening Activity
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