Repository logo
  • English
  • 中文
  • Log In
    New user? Click here to register.Have you forgotten your password?
Repository logo
    Communities & Collections
    Research Outputs
    Fundings & Projects
    People
    Organizations
    Statistics
  • English
  • 中文
  • Log In
    New user? Click here to register.Have you forgotten your password?
  1. Home
  2. .TMU Publications / 北醫出版品(教師升等著作 / 教學實踐 / 學位論文)
  3. .博碩士學位論文
  4. 111學年度
  5. 大葉桃花心木葉部成分之抑制黑色素活性研究
 
  • Details
Options

大葉桃花心木葉部成分之抑制黑色素活性研究

Other Title
Melanogenesis-Inhibitory Constituents in Leaves of Swietenia macrophylla King
Type
thesis
Date Issued
2023-06-13
Author(s)
黃庭安
Advisor
李慶國
Subjects
系所名稱:藥學系碩士班
Description
學位別:碩士
語文別:中文
口試委員:李宗徽 LEE, TZONG-HUEI ;吳和澄 WU, HO-CHENG;李慶國 LEE, CHING-KUO
授權範圍:網際網路,開放日期為2023-07-25
Abstract
大葉桃花心木 (Swietenia macrophylla King) ,為楝科桃花心木屬植物,原產於中南美洲熱帶雨林。本實驗室過去透過斑馬魚快篩實驗,發現大葉桃花心木葉部成分在美白效果上有較佳的表現,而經 Scifinder 學術網站相關文獻搜查後,鮮少搜尋到桃花心木葉部成分對於美白相關的研究。因此,本研究著重於探討桃花心木葉部的美白功效,透過傳統的分離純化方法與細胞活性追蹤,找出桃花心木中具有美白效果之潛力成分,同時,也透過 in slico 方法應用於桃花心木葉部酒精粗萃物與酪胺酸酶反應之 UPLC-MS 差異性成分分析。桃花心木葉部酒精粗萃物透過乙酸乙酯、水及正丁醇進行分配萃取後,所得之萃取物利用實驗室所開發的斑馬魚快篩方法進行實驗結果的驗證,也藉由 B16F10 細胞進行活性篩選,結果顯示在正丁醇層中的樣品具有黑色素抑制活性且無細胞毒性;在酸乙酯層中,樣品雖有黑色素抑制活性,也有細胞毒性。而後接續使用 MPLC column 與製備級 HPLC 進一步地將正丁醇層與乙酸乙酯層樣品進行後續的分離純化。所得之樣品經 NMR 結構解析後,結果顯示成分為槲皮素(quercetin) 與其醣基化合物,以及苯環化合物。同時,也利用實驗室開發的
UPLC-MS 酵素差異性成分快篩方法,發現大葉桃花心木葉部酒精粗萃物與酪胺酸酶反應前後之 UPLC-MS 差異性成分為槲皮素 (quercetin) 、以及以槲皮素(quercetin) 為主要骨架之醣基化合物。透過傳統分離純化與細胞活性追蹤的方法所純化出的成分與 UPLC-MS 酵素差異性成分分析而得的結果相呼應,因此,我們推測大葉桃花心木葉部的美白功效由槲皮素及其醣基化合物而來。同
時,經過文獻搜尋後,我們也找到佐證槲皮素與其醣基化合物具有抑制黑色素生成潛力的相關資料。此份研究除了探討大葉桃花心木葉部潛在美白成分之外,也提升大葉桃花心木作為市面上天然美白產品的潛力。
URI
https://handle.ncl.edu.tw/11296/9t64sg
https://203.71.86.71/handle/123456789/10185

Copyright Notice

● The digital content on this platform is part of the Taipei Medical University Institutional Repository, featuring various academic works and outputs from the institution. It offers free access to academic research and public education for non-commercial use.

● Please use the content appropriately and within legal boundaries to respect copyright owners' rights. For commercial use, please obtain prior authorization from the copyright owner. Users must not use TMUIR for any illegal purposes.

● By utilising the platform, users are deemed to have fully accepted and understood all the regulations set out in this statement, relevant laws of the Republic of China, all international internet regulations, and usage conventions.

● TMUIR is committed to protecting the interests of copyright owners. If you believe that any material on this website infringes copyright, please contact our staff at libirtmu@gmail.com, and we will remove the work from the repository.

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Cookie settings
  • Privacy policy
  • End User Agreement
  • Send Feedback