Sugarcane bagasse hydrolysate as a potential feedstock for red pigment production by Monascus ruber

• Published in: Food chemistry Vol. 245; pp. 786 - 791
• Main Authors: Terán Hilares, Ruly, de Souza, Rebeca Andrade, Marcelino, Paulo Franco, da Silva, Silvio Silvério, Dragone, Giuliano, Mussatto, Solange I., Santos, Júlio César
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 15.04.2018
• Subjects: Enzymatic hydrolysate; Light-emitting diode; Monascus ruber; Red pigment; Sugarcane bagasse; Thermal stability; Monascus ruber; Enzymatic hydrolysate; Red pigment; Light-emitting diode; Thermal stability; Sugarcane bagasse
• ISSN: 0308-8146; 1873-7072
• DOI: 10.1016/j.foodchem.2017.11.111

•Sugarcane bagasse is a potential carbon source for red pigment production.•Red pigment production by M. ruber was strongly influenced by light incidence.•Dark condition favors the production of red pigment by M. ruber.•Glucose and cellobiose present in SCB hydrolysate was metabolized by M. ruber.•Red pigment produced in SCB hydrolysate-medium showed high thermal stability. Sugarcane bagasse (SCB) hydrolysate could be an interesting source for red pigment production by Monascus ruber Tieghem IOC 2225. The influence of different wavelength of light-emitting diode (LED) at 250 μmol.m−2.s−1 of photon flux density on red pigment production by M. ruber in glucose-based medium was evaluated. Then, SCB hydrolysate was used as carbon source under the previously selected light incidence conditions. In glucose-based medium, the highest pigment production was achieved in fermentation assisted with orange LED light (8.28 UA490nm), white light (8.26 UA490nm) and under dark condition (7.45 UA490nm). By using SCB hydrolysate-based medium, the highest red pigment production (18.71 AU490nm) was achieved under dark condition and the glucose and cellobiose present in the hydrolysate were metabolized. SCB enzymatic hydrolysate was demonstrated to be a promising carbon source for high thermal stability red pigment production (activation energy of 10.5 kcal.mol−1), turning an interesting alternative for implementation in biorefineries.