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3067147 
Journal Article 
Production of Hyaluronic Acid by Streptococcus zooepidemicus on Protein Substrates Obtained from Scyliorhinus canicula Discards 
Vazquez, JA; Pastrana, L; Pineiro, C; Teixeira, JA; Perez-Martin, RI; Amado, IR 
2015 
Marine Drugs
ISSN: 1660-3397
EISSN: 16603397 
13 
10 
6537-6549 
English 
This work investigates the production of hyaluronic acid (H) by Streptococcus equi subsp. zooepidemicus in complex media formulated with peptones obtained from Scyliorhinus canicula viscera by-products. Initially, in batch cultures, the greatest productions were achieved using commercial media (3.03 g/L) followed by peptones from alcalase hydrolyzed viscera (2.32 g/L) and peptones from non-hydrolyzed viscera (2.26 g/L). An increase of between 12% and 15% was found in subsequent fed-batch cultures performed on waste peptones. Such organic nitrogen sources were shown to be an excellent low-cost substrate for microbial H, saving more than 50% of the nutrient costs. 
viscera waste valorization; hyaluronic acid production; Streptococcus zooepidemicus; marine peptones; Scyliorhinus canicula by-products; logistic equation