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Anti-Biofilm Activity of Origanum Vulgare Supercritical Fluid Extracts and Cosmetic Active Ingredients Development

오레가노 초임계추출물의 황색포도상구균 바이오필름 형성 억제능을 이용한 기능성 화장품 소재의 개발

  • 박신성 (을지대학교 미용화장품과학과) ;
  • 이광원 (을지대학교 시니어헬스케어학과) ;
  • 박수인 (을지대학교 미용화장품과학과) ;
  • 신문삼 (을지대학교 미용화장품과학과)
  • Received : 2022.08.14
  • Accepted : 2022.10.10
  • Published : 2022.11.30

Abstract

In this study, oregano was extracted by supercritical extraction and hydrothermal extraction method. In vitro experiments such as antimicrobial and antioxidant activity test were performed. As a result of the disc diffusion method, only the supercritical extracts formed a clear zone. The MIC for S. aureus was found only in the supercritical fluid extracts and it was 1000 ㎍/mL. The hydrothermal extract's MIC is 125 ㎍/mL for C. acnes. Through biofilm inhibition assay, we found that the supercritical fluid oregano extracts inhibit the biofilm of S. aureus by more than 70% even at low concentrations of 125 ㎍/mL. On the other hand, the antioxidant ability of the hydrothermal extract was better than that of the supercritical fluid extracts. Furthermore, we tried to make a skincare ingredient for atopic dermatitis by utilizing the S. aureus biofilm inhibitory ability of oregano supercritical fluid extracts. Liposome was used to overcome the low solubility of the oregano supercritical fluid extracts and increase stability.

본 연구에서는 오레가노를 초임계유체추출법과 열수추출법으로 추출하여 항균, 항산화 in vitro 실험을 수행하였다. 항균실험인 Disc diffusion method 결과, 초임계추출물에 대해서만 clear zone이 나타났다. S. aureus에 대한MIC는 초임계추출물에서만 관찰되었으며, 1000 ㎍/mL로 확인되었다. 열수추출물은 C. acnes에 대한 MIC가 125 ㎍/mL로 여드름균에 대한 항균력이 뛰어났다. 나아가 우리는 Biofilm inhibition assay를 통해 오레가노 초임계추출물이 125 ㎍/mL의 저농도에서도 S. aureus의 바이오필름을 70%이상 억제한다는 것을 발견하였다. DPPH radical 소거능, ABTS+ radical 소거능, SOD 유사활성능과 총 폴리페놀 함량 측정에서 열수추출물의 항산화력이 초임계추출물보다 우수하게 측정되었다. 나아가, 앞서 확인된 오레가노 초임계추출물의 S. aureus 바이오필름 억제능을 활용하여 아토피 피부에 적합한 소재를 개발하고자 하였다. 오레가노 초임계추출물의 낮은 용해도를 극복하고 안정성을 증가시키기 위하여 리포좀을 이용하였다.

Keywords

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