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미세먼지 자극으로부터 지모추출물, 베타글루칸, 폴리감마글루탐산 혼합물의 안티폴루션 효능 평가
서수경 ( Soo-kyung Seo ),구창섭 ( Chang-sub Ku ),손보미 ( Bomi Son ),이수경 ( Su-gyeong Lee ),강은미 ( Eun Mee Kang ),김미옥 ( Miok Kim ),홍정현 ( Jung Hyun Hong ),김선화 ( Seonhwa Kim ),신문삼 ( Moon Sam Shin ) 대한미용학회 2016 대한미용학회지 Vol.12 No.4
This study characterized Prostaglandin E2 (PGE2) production from Raw264.7 cells stimulated with particulate matter (PM1648a) and tested anti-pollution capacity of mixtures of Anemarrhena asphodeloides root extract, β-glucan and poly- γ-glutamic acid (the complex). In order to assess cytotoxicity, we treated the Raw264.7 cells with the complex using the lactase dehydrogenase (LDH) assay method. To measure cell viability, we treated HaCaT cells with the complex using the MTT assay method. To test scavenging activity, the DPPH assay method was used. To test the anti-oxidant effect of the complex, we treated HaCaT cells with the pro-inflammatory mediator particulate matter (PM1648a) and with PM1648a and the complex, then measured the concentration of reactive oxygen species (ROS) within the cells using the dichlorofluorescin diacetate (DCF-DA) assay method. The complex had cytotoxicity below 6.5% and cell viability above 91.3% at a concentration of 0.05%. Also, the complex showed scavenging activity above 50% at a concentration of 1.0%. In addition, ROS production at the 0.05% complex concentration was reduced to 61.0%. In a clinical experiment, the subjects who had skin urtication used a cosmetic product containing mixtures of 1.0% Anemarrhena asphodeloides root extract, 0.4% β-glucan and 0.5% poly-γ-glutamic acid for 4 weeks. The experimental group showed a statistically significant improvement in skin humidity, desquamation index and skin urtication. Based on the results with in vitro test and clinical experiment, mixtures of Anemarrhena asphodeloides root extract, β-glucan and poly-γ-glutamic acid could be used as cosmetic anti-pollution materials.
UPLC-MS/MS를 이용한 인삼 중 326종 농약의 동시분석
김성수(Seong-Soo Kim),김경주(Kyung-Ju Kim),이민정(Min-Jeong Lee),서수경(Su-Kyung Seo),이용재(Yong-Jae Lee) 한국농약과학회 2020 농약과학회지 Vol.24 No.1
A new analytical method has been developed to determine 326 pesticide residues in fresh ginseng. The extraction of pesticides was carried out by modified the Korean Food Standards Codex sample extraction and determination was performed using UPLC-MS/MS. During the pretreatment process of the test method, Solid-liquind separation was changed to centrifugation, and was performed without purification. also, LC-MS/MS analysis target pesticides were expanded from 151 pesticides to 326. Using matrix-matched calibration standards, it was demonstrated that a minimal concentration of 10 μg kg<SUP>−1</SUP> of analyte in the matrix is required for the consistent identification of targeted pesticides with two MRM transition. The method was validated by the precision and accuracy results. 326 kinds of pesticides spiked at two level 20, 200 μg kg<SUP>−1</SUP> in fresh ginseng. The recoveries were within 70.1~120% with relative standard deviations of ≤18.7%, and the limit of quantification of method was 1.0~8.0 μg kg<SUP>−1</SUP>. in fresh ginseng. The result showed that sample extraction and UPLC-MS/MS analysis in the study can be applied to multi-residue analysis of pesticides in fresh ginseng.