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Mineralization induced by phosphorylated dry baker's yeast.
Ojima, Yoshihiro; Kihara, Maya; Yoshida, Mami; Igarashi, Koichi; Yoshida, Tomoko; Azuma, Masayuki.
Afiliación
  • Ojima Y; Department of Applied Chemistry and Bioengineering, Osaka City University, Osaka, Japan.
  • Kihara M; Department of Applied Chemistry and Bioengineering, Osaka City University, Osaka, Japan.
  • Yoshida M; Department of Applied Chemistry and Bioengineering, Osaka City University, Osaka, Japan.
  • Igarashi K; Department of Applied Chemistry and Bioengineering, Osaka City University, Osaka, Japan.
  • Yoshida T; Research Center for Artificial Photosynthesis, Osaka City University, Osaka, Japan.
  • Azuma M; Department of Applied Chemistry and Bioengineering, Osaka City University, Osaka, Japan.
PLoS One ; 15(9): e0239774, 2020.
Article en En | MEDLINE | ID: mdl-32976506
We found the mineralization of Cu during long-term Cu2+ adsorption onto dry baker's yeast cells phosphorylated using sodium cyclo-triphosphate. Field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray spectroscopy confirmed that the elemental composition of minerals were copper, phosphorus, and oxygen. Synchrotron-based X-ray absorption fine structure showed that the local structure around Cu atoms deposited on the mineral was almost identical to that of commercial copper (II) phosphate Cu3(PO4)2∙3H2O. However, the crystallinity was low, and the structure was slightly distorted. Time profile analysis using FESEM revealed that copper phosphate mineralization was first apparent on Day 3 of adsorption, whereas mineral formation plateaued at around Day 7. It seems that mineralization occurs by the local saturation of phosphate and Cu2+ on the yeast cells. Mineralization of the rare earth ion Dy3+ was also demonstrated during long-term adsorption. Mineralization on phosphorylated yeast cells appears to follow a common path for various types of metal ions and provides a promising technique for metal recovery via irreversible adsorption.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Saccharomyces cerevisiae / Cobre Idioma: En Revista: PLoS One Asunto de la revista: CIENCIA / MEDICINA Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Saccharomyces cerevisiae / Cobre Idioma: En Revista: PLoS One Asunto de la revista: CIENCIA / MEDICINA Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos