Potato pomace: An efficient resource for Monascus pigments production through solid-state fermentation

• Published in: Journal of bioscience and bioengineering 2021-08, Vol.132 (2), p.167-173
• Main Authors: Chen, Xiaoju, Yan, Juan, Chen, Ju, Gui, Ruiyu, Wu, Yuqing, Li, Nan
• Format: Article
• Language: English
• Subjects: Monascus purpureus; Pigments; Potato pomace; Shallow tray fermentation; Solid-state fermentation
• ISSN: 1389-1723; 1347-4421
• DOI: 10.1016/j.jbiosc.2021.03.007

Monascus pigments are the important natural additives in food industrial production. To obtain more economic pigments production processes, the present study was performed to evaluate the feasibility of using pomace resource as substrate for pigments production. Petri dish fermentation was designed to seek the optimal process parameters, and the value of red, yellow and total pigments per dry fermented substrate could achieve 654.6, 1268.1 and 1922.7 OD units/g, respectively. Shallow tray fermentation experiments were used for investigating the potential industrial production of pigments using potato pomace as sole carbon. The final total pigments of 200 g and 1000 g shallow tray experiments could reach 1886.9 and 1737.4 OD units/g. The results in this work indicating that potato pomace could be an efficient and low cost substrate for the production of Monascus pigments, and will supply a valuable reference for the comprehensive utilization of potato resources and seeking the economical natural pigments process. [Display omitted] •Potato pomace was evaluated as economical substrate for pigments production.•Investigating the potential pigments production by shallow tray fermentation.•Monascus purpureus could utilize potato pomace to produce pigments effectively.•Supplying a valuable reference for seeking economical natural pigments process.