Solid-state fermentation was carried out using jackfruit seed powder as substrate for the production of pigments using a fungal culture of Monascus purpureus. Due to the buffering nature of jackfruit seed powder, colour of pigments produced was stable over a wide range of initial pH of the substrate. Jackfruit seed powder with a particle size between 0.4 and 0.6 mm without any additional carbon source was found to be the best for pigment production. Water-soluble pigments were produced when jackfruit seed powder was supplemented with monosodium glutamate, soybean meal, peptone or chitin powder. The addition of external nitrogenous compounds showed a positive impact on water-soluble pigment production.

Pigmenti iz gljive Monascus purpureus dobiveni su uzgojem kulture na čvrstoj podlozi od praha dobivenog mljevenjem sušenog sjemena biljke Artocarpus heterophyllus (Jackfruit). Boja dobivenih pigmenata bila je stabilna bez obzira na početnu pH-vrijednost supstrata zahvaljujući puferskom svojstvu praha. Najbolji supstrat za proizvodnju pigmenata bio je prah veličine čestica od 0,4 do 0,6 mm, bez dodanog izvora ugljika. Kad se prahu doda natrijev glutamat, sojina sačma, pepton ili hitinski prah, dobiju se pigmenti topljivi u vodi. Dodatak dušikovih spojeva pozitivno utječe na proizvodnju pigmenata topljivih u vodi.