Genetical Surface Display of Silicatein on Yarrowia lipolytica Confers Living and Renewable Biosilica–Yeast Hybrid Materials
| Autor: | Zhe Chi, Catherine Madzak, Zhen-Ming Chi, Zhuangzhuang Wang, Xiaohong Cheng, Hongying Wang, Guang-Lei Liu, Chenguang Liu |
|---|---|
| Přispěvatelé: | Paris-Saclay Food and Bioproduct Engineering (SayFood), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Flocculation
[SDV]Life Sciences [q-bio] General Chemical Engineering 010501 environmental sciences 01 natural sciences 03 medical and health sciences chemistry.chemical_compound Porosity QD1-999 ComputingMilieux_MISCELLANEOUS 030304 developmental biology 0105 earth and related environmental sciences 0303 health sciences Aqueous solution biology Chemistry Substrate (chemistry) Yarrowia General Chemistry biology.organism_classification 6. Clean water Yeast Chemical engineering Orthosilicate Hybrid material |
| Zdroj: | ACS Omega, Vol 5, Iss 13, Pp 7555-7566 (2020) ACS Omega ACS Omega, ACS Publications, 2020, 5 (13), pp.7555-7566. ⟨10.1021/acsomega.0c00393⟩ |
| ISSN: | 2470-1343 |
| DOI: | 10.1021/acsomega.0c00393⟩ |
| Popis: | In this work, a biological engineering-based biosilica-yeast hybrid material was developed. It was obtained by the aggregation of Yarrowia lipolytica through biosilicification catalyzed using genetically displayed silicatein on its cell surface. With orthosilicate or seawater as the substrate, the silicatein-displayed yeast could aggregate into flocs with a flocculation efficiency of nearly 100%. The resulting floc was found to be a sheetlike biosilica-yeast hybrid material formed by the biosilica-mediated immobilization of yeast cells via cross-linking and embedding, turning the original hydrophilicity of yeast cells into hydrophobicity. In addition, this material was characterized to be porous with an average pore diameter of approximately 10 μm and porosity of over 70%. Because of these properties, this hybrid material could achieve enhanced removal efficiencies for chromium ions and n-hexadecane, which were both above 99%, as compared to the free cells of Y. lipolytica in aqueous environments. Importantly, this hybrid material could be recultivated to generate new batches of yeast cells that maintain parallel properties to the first generation so that the same hybrid material could be reproduced with unchanged highly efficient removal of chromium and n-hexadecane to those of the first generation, demonstrating that this biosilica-yeast hybrid material was living and renewable. This work presented a novel way of harnessing silicatein and Y. lipolytica to achieve biological synthesis of a living inorganic-organic hybrid material that has potential to be applied in water treatment. |
| Databáze: | OpenAIRE |
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