Survey of cyclopiazonic acid contamination in corn from China and Southeast Asian countries

摘要

Natural incidence of cyclopiazonic acid (CPA) in corn from the southern part of China and Southeast Asian countries including. Indonesia, Thailand, and the Philippines, was surveyed using a combination of a clean-up procedure consisting of diethyl ether liquid-liquid extraction and HPLC-UV analysis. Out of 99 corn samples analyzed, 15 samples (15 %) were contaminated with CPA. The detected concentration of CPA ranged from 27 to 1510 ug/kg, with all CPA positive samples contaminated with aflatoxin B_1(AFB_1). It was noteworthy that the high level of CPA together with AFB_1 over 1000 mu g/kg was found in the samples intended for human consumption from China and the Philippines.