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KMID : 0380620070390020200
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Korean Journal of Food Science and Technology
2007 Volume.39 No. 2 p.200 ~ p.208
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Screening of Antioxidants and Cosmeceuticals from Natural Plant Resources in Jeju Island
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Hyun Sun-Hee
Jung Sung-Keun
Jwa Mi-Kyung
Song Chang-Khil
Kim Ji-Hun
Lim Sang-Bin
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Abstract
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Fifty-four natural plants from Jeju Island, Korea were extracted by 70% methanol. The extracts containing the highest total phenolic contents (TPC) (>250 mg gallic acid equivalents/g dry sample) were obtained from Ostrya japonica, Geranium thunbergii, Malus sieboldii, Ardisia japonica, and Agrimonia pilosa. DPPH inhibition activity was greatest in Ardisia crenata at 94.1%. A high correlation was observed between DPPH inhibition activity and TPC (). Tyrosinase inhibition activities of more than 85% were obtained from the extracts of Persicaria filiformis, Rhus javanica, Alnus firma, and Myrica rubra. On the other hand, the P. filiformis and M. rubra extracts each showed more than 90% XOD inhibition activity. The five natural plants with the highest biological activities were also extracted by pressurized liquid (PLE, 100% methanol, 13.6 MPa, ). The DPPH and tyrosinase inhibition activities were almost the same in both the 70% methanol and PLE extracts. The for tyrosinase and elastase inhibition activities in PLE were 802 and 88 ppm in A. japonica, and 959 and 66 ppm in M. rubra, respectively.
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KEYWORD
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natural plants, antioxidants, cosmeceuticals, pressurized Liquid extraction
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