• 제목/요약/키워드: research products

검색결과 14,035건 처리시간 0.038초

Effect of red ginseng NaturalGEL on skin aging

  • Kim, Ye Hyang;Park, Hye Rim;Cha, So Yoon;Lee, So Hun;Jo, Jung Wung;Go, Jung Nam;Lee, Kang Hyuk;Lee, Su Yeon;Shin, Song Seok
    • Journal of Ginseng Research
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    • 제44권1호
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    • pp.115-122
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    • 2020
  • Background: In aged skin, degradation of collagen fibers, which occupy the majority of the extracellular matrix in the dermis, and changes of aquaporin 3 (AQP3) and skin constituents, such as hyaluronic acid and ceramide, cause wrinkles and decrease skin moisturization to contribute to dryness and lower elasticity skin. Red ginseng (RG) is used as a cosmetic and food material and is known to protect from UVB-induced cell death, increase skin hydration, prevent wrinkles, and have an antioxidative effect. But, in general, RG used as a material is the soluble liquid portion in the solvent, and the part that is not soluble in the solvent is discarded. Thus, we made the whole RG into microgranulation and dispersed in water to produce gel form for using entire RG, and it was named red ginseng NaturalGEL (RG NGEL). Methods: RG NGEL was investigated for matrix metalloproteinases inhibitory activity, induction of Type I collagen, AQP3, hyaluronan synthetase 2, serine palmitoyl transferase, ceramide synthase 3, and filaggrin expression and compared with RG water extract. Results: RG NGEL reduced the levels of UV-induced matrix metalloproteinases and increased Type I collagen in human fibroblast cells and upregulated AQP3, hyaluronan synthetase 2, serine palmitoyl transferase, ceramide synthase 3, and filaggrin expressions in human keratinocytes compared with RG water extract. Conclusion: RG NGEL has the potential as an effective reagent for antiaging cosmetics to improve wrinkle formation and skin hydration.

Platelet-Activating Factor Antagonistic Activity and ^13C NMR Assignment of Pregomisin and Chamigrenal from Schisandra chinensis

  • Lee, Im-Seon;Jung, Keun-Young;Oh, Sei-Ryang;Kim, Dong-Seon;Kim, Jung-Hee;Lee, Jung-Joon;Lee, Hyeong-Kyu;Lee, Seung-Ho;Kim, Eun-Hee;Cheong, Chae-Joon
    • Archives of Pharmacal Research
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    • 제20권6호
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    • pp.633-636
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    • 1997
  • In the course of searching for PAF receptor antagonists, pregomisin (1) and chamigrenal (2) were isolated from the fruits of Schizandra chinensis Baill by the bioactivity-guided isolation. Both compounds showed PAF antagonistic activity and the $IC_{50}$ values were $4.8{\times}10^{-5} M and 1.2{\times}10^{-4}M,$ respectively. In addition, the $^{13}C$ NMR assignments of 1 and 2 using DEPT, HMQC, COLOC and HMBC were reported for the first time.

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Piperoctadecalindine, a New Piperidine Alkaloid from Piper retrofractum Fruits

  • Ahn Jong Woong;Lee Chong Ock;Kim Eun Joo;Zee Ok Pyo;Kim Hyung Jin
    • Bulletin of the Korean Chemical Society
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    • 제13권4호
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    • pp.388-391
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    • 1992
  • A chemical investigation of the fruits of Piper retrofractum (Piperaceae) has led to the isolation and characterization of a novel piperidine alkaloid, piperoctadecalidine together with three known alkaloids piperine, pipernonaline and guineensine. The structure of the new compound was detemined to be (2E,4E,14Z)-N-(2,4,14-Octadecatrienoyl) piperidine by spectral and synthetic methods.

Sterols and Triterpenoids from Codonopsis lanceolata

  • Yang, Han-Suk;Choi, Sung-Sook;Han, Byung-Hoon;Kang, Sam-Sik;Woo, Won-Sick
    • 약학회지
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    • 제19권3호
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    • pp.209-213
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    • 1975
  • The roots of Codonopsis lanceolata contained ${\alpha}$-spinasterol. ${\delta}^7$-stigmastenol, oleanolic acid, echinocystic acid, and an unidentified triterpene acid, mp $249{\circ}$.

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