and aloe-emodin.
MATERIALS AND METHODS:
Plant Materials
The ripe pods of C. fistula were collected from
Ubonratchathani province, Thailand in May, 2007. The
samples were identified by comparison with the plant
specimens at the Forest Herbarium, Department of
National Park, Wildlife and Plant Conservation, Ministry
of Natural Resources and Environment, Bangkok. The
voucher specimens (WCF0507) were deposited at
Department of Pharmacognosy, Faculty of Pharmacy,
Mahidol University, Bangkok, Thailand.