Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Elemental imaging by Laser-Induced Breakdown Spectroscopy to evaluate selenium enrichment effects in edible mushrooms

Full text
Author(s):
de Oliveira, Aline Pereira [1] ; Leme, Flavio de Oliveira [2] ; Nomura, Cassiana Seimi [3] ; Naozuka, Juliana [1]
Total Authors: 4
Affiliation:
[1] Univ Fed Sao Paulo, Dept Quim, BR-09972270 Diadema - Brazil
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210580 Santo Andre - Brazil
[3] Univ Sao Paulo, Dept Quim Fundamental, BR-05513970 Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 9, JUL 25 2019.
Web of Science Citations: 0
Abstract

Mushrooms are bioaccumulating organisms commonly used in selenium (Se) enrichment studies. However, the addition of Se in the culture medium may alter the distribution of other essential elements in the mushroom fruiting body. To evaluate the effects of the Se enrichment, Ca, Mg, and K distributions in pink oyster (Pleurotus djamor) and K and Mg distributions in white oyster (Pleurotus ostreatus) mushrooms were mapped by laser-induced breakdown spectroscopy (LIBS), which can be used at room temperature and requires minimal or no sample preparation. It was verified that Se enrichment favoured the accumulation of Ca in the lower part of the pink oyster mushroom and prevented the transport of this element to the edges and tops. The Se enrichment also altered the distribution of K and Mg, decreasing the numerical correlation between the K and Mg distributions (R-2 = 0.5871). In the white oyster mushroom, however, despite the changes in the morphological characteristics of the fruiting bodies after enrichment, there were generally nonsignificant differences in the K and Mg distributions between the control and the Se-enriched mushrooms. (AU)

FAPESP's process: 18/06332-9 - Elemental enrichment: essentiality and toxicity
Grantee:Juliana Naozuka
Support Opportunities: Regular Research Grants
FAPESP's process: 17/05009-7 - Evaluation of antagonism between selenium and toxic elements in mushrooms: enrichment and remediation
Grantee:Aline Pereira de Oliveira
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 17/10346-2 - Method development for direct quantitative analysis of high silicon content samples: laser-induced breakdown spectrometry and Total Reflection X-Ray Fluorescence
Grantee:Cassiana Seimi Nomura
Support Opportunities: Regular Research Grants