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KMID : 0604520210470040281
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Journal of the Society of Cosmetic Scientists of Korea
2021 Volume.47 No. 4 p.281 ~ p.287
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Analysis on the Efficacy of Cosmetic Application of Lijang Snow Tea (Nekemias grossedentata)
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Wen Ying
Lee Seol-Hoon
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Abstract
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In this study, we analyzed the cosmetic applicability of extract from snow tea, native to Lijiang, Yunnan-province, China. After confirming the species as N. grossedentata through DNA analysis of Lijiang snow tea, experiments were conducted using representative tea, green tea, and a representative control group for each efficacy analysis. Both teas were extracted using 70% (v/v) ethanol aqueous solution. The polyphenol content in the Lijiang snow tea extract (gallic acid equivalent, 23.9 ± 3.2 mg/mL) was higher than that in green tea extract (16.4 ± 2.3 mg/mL). In contrast, the antioxidant (Radical scavenging, IC50 104 μg/mL), tyrosinase enzyme inhibitory (whitening agent, IC50 40.7 μg/mL), and Escherichia coli growth inhibitory (preservative) activities (IC50 2.85 mg/mL) were analyzed based on the solid content in the extract, and it was confirmed that the activities of Lijiang snow tea extract were superior to those of green tea extract (radical scavenging, IC50 234 μg/mL. It also showed similar efficacy to previously used active substances such as antioxidants (vitamin C, IC50 108 μg/mL), whitening agents (vitamin C, IC50 80μg/mL), and preservatives (methylparaben, IC50 4.35 mg/mL). However, green tea was found to be better in collagenase inhibition activity (anti-wrinkle). Through this study, the cosmetic application potential of Lijiang snow tea is high.
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KEYWORD
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anti-oxidant, anti-wrinkle, cosmetic applications, Lijang snow-tea (Nekemias grossdentata), whitening
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