Hyaluronic acid production by Streptococcus zooepidemicus in marine by-products media from mussel processing wastewaters and tuna peptone viscera

Microbial Cell Factories

Research

Javier Fraguas¹  Miguel A Murado²  María I Montemayor²  José A Vázquez² 

[1] Dilsea S.L., Porto Pesqueiro de Vigo, dársena 3 Vigo, 36202, Galicia, Spain;Grupo de Reciclado y Valorización de Materiales Residuales (REVAL), Instituto de Investigacións Mariñas (CSIC), r/Eduardo Cabello, 6. Vigo, 36208, Galicia, Spain;

关键词: Fermentation;    Lactic Acid;    Hyaluronic Acid;    Lactic Acid Production;    Residual Medium;   

DOI  :  10.1186/1475-2859-9-46

 received in 2010-05-31, accepted in 2010-06-14,  发布年份 2010

来源: Springer

【 摘 要 】

BackgroundHyaluronic acid is one of the biopolymers most commonly used by the pharmaceutical industry. Thus, there is an increasing number of recent works that deal with the production of microbial hyaluronic acid. Different properties and characteristics of the fermentation process have been extensively optimised; however, new carbon and protein sources obtained from by-products or cheap substrates have not yet been studied.ResultsMussel processing wastewater (MPW) was used as a sugar source and tuna peptone (TP) from viscera residue as a protein substrate for the production of hyaluronic acid (HA), biomass and lactic acid (LA) by Streptococcus zooepidemicus in batch fermentation. Commercial medium formulated with glucose and tryptone was used as the control. The parametric estimations obtained from logistic equations and maintenance energy model utilized for modelling experimental data were compared in commercial and low-cost media. Complete residual media achieved high production (3.67, 2.46 and 30.83 g l-1 of biomass, HA and LA respectively) and a high molecular weight of HA (approximately 2500 kDa). A simple economic analysis highlighted the potential viability of this marine media for reducing the production costs by more than 50%.ConclusionsThe experimental data and mathematical descriptions reported in this article demonstrate the potential of media formulated with MPW and TP to be used as substrates for HA production by S. zooepidemicus. Furthermore, the proposed equations accurately simulated the experimental profiles and generated a set of interesting parameters that can be used to compare the different bacterial cultures. To the best of our knowledge, this is the first work in which a culture media formed by marine by-products has been successfully used for microbial HA production.

【 授权许可】

CC BY   
© Vázquez et al; licensee BioMed Central Ltd. 2010