Solid-state fermentation for the enrichment and extraction of proteins and antioxidant compounds in rice bran by Rhizopus oryzae

The objective of this work was to evaluate the solid-state fermentation with Rhizopus oryzae CCT 7560 of rice bran for the enrichment of proteins and the antioxidant compounds in the fermented biomass. Fermentation was performed in tray bioreactors at 30ºC for 120 h. Protein extraction was done at a...

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Bibliographic Details
Published in:Brazilian archives of biology and technology 2012-12, Vol.55 (6), p.937-942
Main Authors: Kupski, Larine, Cipolatti, Eliane, Rocha, Meritaine da, Oliveira, Melissa dos Santos, Souza-Soares, Leonor de Almeida, Badiale-Furlong, Eliana
Format: Article
Language:English
Subjects:
Fermentation
Phenolic extract
Protein extract
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Summary:The objective of this work was to evaluate the solid-state fermentation with Rhizopus oryzae CCT 7560 of rice bran for the enrichment of proteins and the antioxidant compounds in the fermented biomass. Fermentation was performed in tray bioreactors at 30ºC for 120 h. Protein extraction was done at alkaline pH, followed by precipitation with acetone. Phenolic compounds were extracted with cold methanol. The maximum protein was recovered from after 120 h (26.6%). The content of total phenolic compounds increased during the fermentation and was maximum after 96 h, which inhibited the DPPH radical by 87%. The promising characteristics of the protein and phenolic extracts of the biomass suggested the application in the coating composition for vegetal tissues preservation.
ISSN:1516-8913
1516-8913
1678-4324
DOI:10.1590/S1516-89132012000600018