Production of fungal protein by solid substrate fermentation of cactus Cereus peruvianus and Opuntia ficus indica

AUTOR(ES)

Oliveira, Moises A., Rodrigues, Claudenice, Reis, Edson Marques dos, Nozaki, Jorge

FONTE

Química Nova

DATA DE PUBLICAÇÃO

2001-06

RESUMO

Agricultural wastes from cactus Cereus peruvianus and Opuntia ficus indica were investigated for protein production by solid substrate fermentation. Firstly, the polyelectrolytes were extracted and used in water cleaning as auxiliary of flocculation and coagulation. The remaining fibrous material and peels were used as substrate for fermentation with Aspergillus niger. Glucoamylase and cellulase were the main enzymes produced. Amino acids were determined by HPLC and protein by Lowry's method. After 120 hours of fermentation the protein increased by 12.8%. Aspartic acid (1.27%), threonine (0.97%), glutamic acid (0.88%), valine (0.70%), serine (0.68%), arginine (0.82%), and phenylalanine (0.51%) were the principal amino acids produced.

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