A Monascus strain (AS. 3.4617) was screened from the preserved cultures of Institute of Microbiology, Academic Sinica. According to the identification of the morphological and physiological character, this strain belong to Monascus anka Sato.
By drawing dry mycelia with organic solvent and followed by isolating with two times silica gel chromatography, two red pigments were obtained. HPLC analysis indicated that the two red pigments were pure. After analyzing with mass spectrography, FAB, NMR and element analysis, it is sure that both of the red pigments are different from the Monascus pigments known. The possible formula of the two red pigments are: C_(23)H_(27)O_5N and C_(25)H_(31)O_5N