• Journal of Applied Biological Chemistry
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• v.59 no.1
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• pp.13-17
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• 2016

As natural plant-based industry has been expanded, the use of oriental medicinal plants as cosmeceutical material received a lot of attentions in the cosmetic industry. Among various medicinal plants, Potentilla chinensis have drawn interests for its biological effects. Although several attempts were tried to study its biological effect as medicinal plant, only limited results were reported to evaluate its biological effect as cosmeceutical material. In this study, we examined the possibility of root extract from Potentilla chinensis as a cosmeceutical material because the root part has been reported to have several kinds of health promoting effects. After extraction of roots, biological evaluation including anti-inflammation, anti-wrinkle, whitening effect and moisturizing effect was performed. As a result, the root extract showed remarkable biological activities through stimulating synthesis of elastin and aquaporin-3, and inhibiting melanin synthesis, cyclooxygenase-2 expression and expression of metallopeptidase-1.

• 한국약용작물학회:학술대회논문집
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• 2007.05a
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• pp.191-192
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• 2007

• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.142-143
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• 2011

• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.140-141
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• 2011

• Journal of the Korean Society of Food Science and Nutrition
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• v.26 no.5
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• pp.952-957
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• 1997

The three medicinal herbs-Curcuman longa Linne, Paeonia japonica Miyabe, Scutellaria baikalensis George-irradiated with gamma rays were tested for their possible genotoxicity. The methanol-soluble and water-soluble fractions of the 10kGy gamma-irradiated herbs were examined in cultured Chinese hamster ovary(CHO) cells for their ability to induce micronuclei. No mutagenicity of each test material was detected in the assay with or without metabolic activation. The safety of the herbs irradiated with gamma rays at practical doses needs further investigations using in vivo genotoxicity and chronic and reproductive toxicity tests.

• Korean Journal of Medicinal Crop Science
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• v.21 no.5
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• pp.388-393
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• 2013

This study was conducted to select environmental friendly organic materials for controlling the ginseng alternaria blight and to evaluate their effects from 2011 to 2012. Alternaria blight is caused by Alternaria panax and is the most common ginseng disease in Korea. Environmental friendly organic materials were used to reduce amount of chemical fungicides and the number of spray for control of Ginseng Alternaria leaf blight. In 4 years of ginseng, control value of Alternaria leaf blight by single application of Defenoconazole WP was 82.3% and those of single application was 62.0~75.9%. Consequently, mixed or alternated application of eco-material products could be recommended as a control method to reduce the amount of fungicides.

• Korean Journal of Medicinal Crop Science
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• v.16 no.3
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• pp.192-194
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• 2008

In our previous study, ethylacetate fraction of white ginseng (root of Panax ginseng C.A. Meyer) extract inhibited mushroom tyrosinase activity and melanin production in melanocytes. This study examined its effects on the expression of melanin biosynthesis-related enzymes to explore the depigmenting pathway. Moreover, depigmenting effect on animal skin was examined using UV-B induced hyperpigmented skin of brown guinea pigs. The ethylacetate fraction of the white ginseng extract exhibited depigmenting activity in the skin of brown guinea pig without visible edema. In addition, this fraction reduced tyrosinase expression in melanocytes. The results suggested that ethylacetate fraction of white ginseng extract might be used as skin depigmenting material by inhibition of tyrosinase activity and expression.

• Korean Journal of Medicinal Crop Science
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• v.6 no.1
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• pp.38-43
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• 1998

This experiment was carried out to gather basic information for improvement of peeling methods in peony (Paeonia lactiflora) roots which have been used for medicinal resources in Korea. Drying time required was shortened in thin root. Optimum drying time after machine peeling appeared to be 20 hrs in 5 to 10mm of root diameter, 39 hrs in 10 to 15mm, 48 hrs in 15 to 20mm, 56 hrs in more than 20mm, but those of unpeeled roots took 11 hrs in 5mm of root diameter and 4 hrs in exposed parent material. Paeoniflorin content in dried roots after peeling was lower than that of unpeeled root. Paeoniflorin content in root below 5mm in diameter was highest (6.15 %) and that was decreased in the increased root diameter up to 20mm, but it was slightly increased in root greater than 20mm in diameter.

• Korean Journal of Medicinal Crop Science
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• v.14 no.3
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• pp.130-133
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• 2006

This study was conducted to select Codonopsis lanceolata seed's new pelleting particulate materials and adhesives. Different adhesives (Polyvinyl alcohol (PVA), Carboxymethyl cellulose (CMC), Polyvinyl pyrrolidone (PVP), Xanthan gum (XG), Arabic gum (AG)) and particulate materials (Illite, Diatomite, Pyrophyllite + Illite + Diatomite (PID), Pyrophyllite + Illite + Talc (PIT), Bentonite + Talc (BT)) were tested for seed pelleting. PID for Codonopsis lanceolata seed pelleting appeared to be the best particulate material. Among the pelleting adhesives, PVP was the best adhesive for seed pelleting, and the optimum concentration for germination of pelleting seed was 1 %. Germination rate of the pelleted seeds treated with PID particulate material and PVP adhesive was higher (86.8%) than those of raw seeds (85.5%). $T_{50}$ and MDG of pelleted Codonopsis lanceolata seed required five and eight days at soil moisture content of 50%, respectively.

• Korean Journal of Medicinal Crop Science
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• v.19 no.3
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• pp.191-197
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• 2011

In this study, we investigated antioxidant activities and whitening effects of Acer mono sap by encapsulation of nanoparticles. Acer mono sap was through ultra high pressure process and then encapsulated by lecithin. Nano-encapsulated The nanoparticles of Acer mono sap showed highest free radical scavengering effect as 89.7% in adding sample (1.0 mg/ml), compared to sap of non-encapsulation. It was showed strong inhibition effect on melanin production test by Clone M-3 cells as 47.8%. High inhibitory of tyrosinase was also measured as 85.8% by adding lecithin nano-particle of 1.0 mg/ml. The nano-particles also showed 14.8% of low cytotoxicity against human normal fibroblast cells in adding 1.0 mg/ml of the highest concentration. These results indicate that Acer mono sap may be a source of cosmetic agents capable of improving whitening effect and antioxidant activites.