흰민들레(Taraxacum coreanum)에서 분리한 taraxinic acid의 tyrosinase 활성저해 및 melanin 생성저해 효과

Tyrosinase Inhibitory Activity and Melanin Production Inhibitory Activity of Taraxinic Acid from Taraxacum coreanum

흰민들레 추출물에서 분리한 taraxinic acid, dihydrotaraxinic acid 및 luteolin를 대상으로 화장품의 미백 소재로서의 이용 가능성을 조사하였다. In vitro tyrosinase 저해 활성은 100 ㎍/mL에서 대조군인 ascorbic acid는 42% 저해 활성을 보였으며, luteolin은 48%, taraxinic acid는 29%, 그리고 dihydrotaraxinic acid는 18%를 보여 luteolin이 가장 높게 나타냈다. Taraxinic acid와 dihydrotaraxinic acid는 100 ㎍/mL 이하의조건에서 B16BL6 멜라닌 형성 세포의 생존율에 영향을 미치지않았으나, luteolin은 강한 세포 독성을 나타냈다. Taraxinic acid와 dihydrotaraxinic acid가 세포 생존율에 영향을 미치지않는 농도 범위(10, 50, 100 ㎍/mL)에서 B16BL6 세포 내 멜라닌생합성 및 tyrosinase 활성을 확인한 결과 농도 의존적으로 억제하는 것으로 확인되었다. 특히 taraxinic acid는 tyrosinase inhibitor로 알려진 arbutin보다 뛰어난 저해 활성을 나타내어, 천연 기능성 미백 화장품 원료로 사용 가능성이 기대된다.

This study was to investigate the Taraxinic acid from Taraxacum coreanum on tyrosinase activity and melanogenesis. In B16BL6 cell, Taraxinic acid did not show cytotoxicity even at concentrations of up to 100 ㎍/mL. In addition, tyrosinase inhibitory activity and melanogenesis inhibitory activity were confirmed by stimulation with α -melanocyte stimulating hormone (α-MSH) in the presence of taraxinic acid. Taraxinic acid was added to cells at concentrations of 10, 50 and 100 ㎍/mL and treated for 48 hours to confirm tyrosinase inhibitory activity and melanin production. The tyrosinase inhibitory activity increased in proportion to the amount of the sample, and showed an inhibitory activity of about 54.5% at a concentration of 50 ㎍/mL. Melanin production decreased in proportion to the sample amount, and it was about 62.2% at the concentration of 10 ㎍/mL. From the above results, it was found that Taraxinic acid had higher tyrosinase activity and melanin synthesis inhibitory activity in melanocyte than arbutin. The results suggest that Taraxinic acid can be utilized in natural whitening cosmetics