| Autor: |
Vieira, Ruan F., Sydney, Eduardo B., Fiametti, Karina G., Wancura, João H. C., Oliveira, J. Vladimir |
| Zdroj: |
Waste & Biomass Valorization; Dec2023, Vol. 14 Issue 12, p3947-3955, 9p |
| Abstrakt: |
Purpose: Whey is considered a material of considerable interest due to the volume generated in dairy companies and by its polluting load, having properties that allow its application as a substrate for obtaining products of social and industrial interest. In this background, this study investigated the volatile fatty acids (VFAs) production by a consortium of microorganisms obtained from whey. Methods: Treatment by chemical hydrolysis and supplementation with yeast extract and peptone were evaluated with the purpose of verifying which process provides the highest VFAs production. Results: Data demonstrated that the chemical hydrolysis of the whey did not affect substantially the compounds' production, since the yields were slightly superior to using unhydrolyzed whey. However, the supplementation process played an important role in the system, increasing considerably the VFAs production. Among the VFAs detected in the samples, butyric acid was the compound with the highest amount produced considering all fermentation broths. The production of this acid had better results with supplemented hydrolyzed whey, presenting a result of 5.9 gCOD L−1. Conclusion: The best production condition can be considered when the whey used was supplemented without chemical hydrolysis – 9.3 gCOD L−1 of VFAs - since it did not require the treatment process. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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