2.2. Microorganisms and media
The test organisms used in this study were as followed:
Propionibacterium acnes (ATCC 6919) and Staphylococcus
epidermidis (ATCC 14990). These bacteria were obtained
from the American Type Culture Collection, USA and Thailand
National Institutes of Health. All media were purchased
from DIFCO (Detroit, MI). Mangostin was kindly provided
by Associate Professor Wandee Gritsanapan (Department of
Pharmacognosy, Mahidol University, Thailand).