Influence of different substrates on the production of pigments and citrinin by monascus FJ46

Abstract

The aim of this work is to investigate the influence of various carbon sources, including cereals, tuber crops, and argo-industrial residues as substrates on the production of pigments and citrinin by Monascus FJ46. Compared with control, all the substrates can reduce the yield of citrinin except for glutinous rice flour and potato as substrates. The relative yield (citrinin concentration/red pigment valeur) with naked oats flour was 0.0012 μg/U, followed 0.0015 μg/U with millet flour, 0.0043 μg/U with sorghum flour, 0.0080 μg/U with corn flour, 0.0088 μg/U with cordyceps sinensis residues, and 0.0091 μg/U with sweet potato. Therefore, naked oats flour, millet flour, sorghum flour, corn flour, cordyceps sinensis residues, and sweet potato can be promising substrates for the production of pigments. Additionally, this is the first report on pigments production using cordyceps sinensis residues as substrate.