Enhancing the Physical Properties and Lifespan of Bacterial Quorum Quenching Media through Combination of Ionic Cross-Linking and Dehydration
| Autor: | Jung-Kee Lee, Chang Hyun Nahm, Sung Jun Jo, Sang Hyun Lee, Jaewoo Lee, Kwang-Ho Choo, Pyung Kyu Park, Kibaek Lee, Chung-Hak Lee, Seonki Lee |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
010501 environmental sciences Bacterial Physiological Phenomena 01 natural sciences Applied Microbiology and Biotechnology Hydrogel Polyethylene Glycol Dimethacrylate Biofouling Boric acid chemistry.chemical_compound Bioreactors 010608 biotechnology medicine Bioreactor Dehydration 0105 earth and related environmental sciences Ions Microbial Viability technology industry and agriculture General Medicine medicine.disease Culture Media Membrane Biochemistry chemistry Chemical engineering Wastewater Quorum Quenching Fermentation Biotechnology |
| Zdroj: | Journal of Microbiology and Biotechnology. 27:552-560 |
| ISSN: | 1738-8872 1017-7825 |
| Popis: | Quorum quenching (QQ) bacteria entrapped in a polymeric composite hydrogel (QQ medium) have been successfully applied in membrane bioreactors (MBRs) for effective biofouling control. However, in order to bring QQ technology closer to practice, the physical strength and lifetime of QQ media should be improved. In this study, enforcement of physical strength, as well as an extension of the lifetime of a previously reported QQ bacteria entrapping hollow cylinder (QQ-HC), was sought by adding a dehydration procedure following the cross-linking of the polymeric hydrogel by inorganic compounds like Ca2+ and boric acid. Such prepared medium demonstrated enhanced physical strength possibly through an increased degree of physical cross-linking. As a result, a longer lifetime of QQ-HCs was confirmed, which led to improved biofouling mitigation performance of QQ-HC in an MBR. Furthermore, QQ-HCs stored under dehydrated condition showed higher QQ activity when the storage time lasted more than 90 days owing to enhanced cell viability. In addition, the dormant QQ activity after the dehydration step could be easily restored through reactivation with real wastewater, and the reduced weight of the dehydrated media is expected to make handling and transportation of QQ media highly convenient and economical in practice. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|