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Hyaluronic acid depolymerization by ascorbate-redox effects on solid state cultivation of Streptococcus zooepidemicus in cashew apple fruit bagasse

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Abstract

The cashew fruit (Anacardium occidentale L.) has been used as a promising agricultural resource for the production of low-molecular weight (MW) hyaluronic acid (HA) (104–105 Da). The cashew juice is a rich source of vitamin C containing, 1.2–2.0 g L−1. This work explores the effects of the initial concentration of the ascorbate on the solid fermentation of the juice-moisturized bagasse from the cashew apple fruit. The results show that the MW reduction of HA is proportional to the initial ascorbate concentration. The presence of ascorbate did not influence the Streptococcus zooepidemicus metabolism. However, the HA productivity was increased from 0.18 to 0.28 mg g−1 h−1 when the ascorbate concentration ranged from 1.7 to 10 mg mL−1. These findings contribute to the controlled production of HA in a low MW range, which is important in cell signalization, angiogenesis and nanoparticles production.

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Abbreviations

ATCC:

American type culture collection

BHI:

Brain heart infusion

Da, kDa:

Daltons, kilodaltons

HPLC:

High-pressure (performance) liquid chromatography

HA:

Hyaluronic acid

MW :

Molecular weight

ROS:

Reactive oxygen species

RID:

Refractive index detector

SSF:

Solid-state fermentation

μx :

Specific cell growth rate

SF:

Submerged fermentation

YACE/S :

Yield factor for acetate

YX/S :

Yield factor for cell

YP/S :

Yield factor for hyaluronic acid

YP/X :

Yield factor for hyaluronic acid/cell competition

YLAC/S :

Yield factor for lactate

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Acknowledgments

The authors acknowledge CAPES and FAPESP for the financial support, the Brazilian Microbial Collection for Environment and Industry (CBMAI) for the maintenance of the Streptococcus strain.

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Correspondence to Maria Helena Andrade Santana.

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de Macedo, A.C., Santana, M.H.A. Hyaluronic acid depolymerization by ascorbate-redox effects on solid state cultivation of Streptococcus zooepidemicus in cashew apple fruit bagasse. World J Microbiol Biotechnol 28, 2213–2219 (2012). https://doi.org/10.1007/s11274-012-1028-z

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  • DOI: https://doi.org/10.1007/s11274-012-1028-z

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