Rao B L, Husain A
Mycopathologia. 1987 Feb;97(2):89-92. doi: 10.1007/BF00436843.
A simple and sensitive colorimetric method using p-dimethylaminobenzaldehyde was developed to detect cyclopiazonic acid in agricultural commodities. The method is sensitive within a range of 1-80 micrograms/ml and allows screening large number of samples in a short time.