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Malassezia pachydermatis에 의한 세포 내 Tyrosinase 저해제의 생산
이성현,유형은,곽윤진,김효진,이대형,이종수,Lee, Sung-Hyun,Yu, Hyung-Eun,Kwak, Yoon-Jin,Kim, Hyo-Jin,Lee, Dae-Hyoung,Lee, Jong-Soo 배재대학교 자연과학연구소 2004 自然科學論文集 Vol.14 No.2
A yeast strain SL-27 found to produce active intracellular tyrosinase inhibitor was screened from 972 kinds of yeasts. It was identified as Malassezia pachydermatis based on microbiological characteristics. The optimum pH and temperature for the growth of Malassezia pachydermatis SL-27 were pH 7.0 and $37^{\circ}C$, respectively. The optimal culture conditions for the production of tyrosinase inhibitor by Malassezia pachydermatis SL-27 were investigated. The optimal medium cimposition for tyrosinase inhibitor production was determined to be 1.0% casamino acid, 2.0% glucose, 0.1% $KH_2PO_4$, 0.05% $MgSo_{4-}7H20$ and each 0.01 of $CaCl_2$ and NaCl. Optimal initial pH and temperature for the production of tyrosinase inhibitor were pH 5.0 and $30^{\circ}C$, respectively. The maximum tyrosinase inhibitory activity of 84%/mL of cell-free extract was showed after 12 h of cultivation under the optimal culturing conditions.