Gliotoxin and Bisdethio(methylthio)gliotoxin from Aspergillus niger (FTCC 5003) grown on palm kernel cake - Shaari, Khozirah; Wai, C. P.; Lajis, Md. Nordin; Abd. Aziz, Suraini (Asian Coordinating Group for Chemistry (ACGC), 2009)