The A. barbadensisleaf skin powder was provided by
Yunnan Evergreen Biological Co., Ltd. (Yuxi, China) and was
originally collected from Yunnan Province, China. The plant
was authenticated by one of the authors, Prof. Jin-Zhi Wan. A
voucher specimen (No. 20131202) was deposited at School of
Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou,
China.