Characterisation and Traceability of Calcium Carbonate from the Seaweed <i>Lithothamnium calcareum</i>
Calcium carbonate (CaCO<sub>3</sub>) from the seaweed <i>Lithothamnium calcareum</i> is a suitable dietary supplement for the prevention of osteoporosis, due to its chemical composition. This study compared CaCO<sub>3</sub> from <i>L. calcareum</i> to...
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MDPI AG
2021-05-01
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author | Rosana Pereira da Silva Giovanna Sayuri Domingues Kawai Fabio Ramos Dias de Andrade Vinicius Danilo Nonato Bezzon Humberto Gomes Ferraz |
author_facet | Rosana Pereira da Silva Giovanna Sayuri Domingues Kawai Fabio Ramos Dias de Andrade Vinicius Danilo Nonato Bezzon Humberto Gomes Ferraz |
author_sort | Rosana Pereira da Silva |
collection | DOAJ |
description | Calcium carbonate (CaCO<sub>3</sub>) from the seaweed <i>Lithothamnium calcareum</i> is a suitable dietary supplement for the prevention of osteoporosis, due to its chemical composition. This study compared CaCO<sub>3</sub> from <i>L. calcareum</i> to CaCO<sub>3</sub> from oyster shell and inorganic minerals that are already used in the pharmaceutical industry. The Rietveld refinement of the XRD showed that the mineral fraction of <i>L. calcareum</i> is composed of aragonite (50.3 wt%), magnesian calcite (45.3 wt%), calcite (4.4 wt%), comin contrast to oyster shell and inorganic minerals, which contain only calcite. The morphology of <i>L. calcareum</i> carbonate particles is granular xenomorphic, which is distinct from the scalenohedral form of inorganic calcite and the fibrous and scale-like fragments of oyster shell. The crystal structures of aragonite and magnesian calcite, present in <i>L. calcareum</i>, have higher contents of oligoelements than the pure calcite in other materials. The isotopic composition (stable isotopes of carbon and oxygen) is heavy in the CaCO<sub>3</sub> from <i>L. calcareum</i> (δ<sup>13</sup>C = 1.1‰; δ<sup>18</sup>O = −0.1‰) and oyster shell (δ<sup>13</sup>C = −4‰; δ<sup>18</sup>O = −2.8‰) in marked contrast to the much lighter isotopic composition of inorganic mineral CaCO<sub>3</sub> (δ<sup>13</sup>C = −19.2‰; δ<sup>18</sup>O = −26.3‰). The differences indicated above were determined through principal component analysis, where the first and second principal components are sufficient for the clear distinction and traceability of CaCO<sub>3</sub> sources. |
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spelling | doaj.art-0b399190ffb24f7a9567e53df1332bee2023-11-22T11:15:37ZengMDPI AGSolids2673-64972021-05-012219221110.3390/solids2020013Characterisation and Traceability of Calcium Carbonate from the Seaweed <i>Lithothamnium calcareum</i>Rosana Pereira da Silva0Giovanna Sayuri Domingues Kawai1Fabio Ramos Dias de Andrade2Vinicius Danilo Nonato Bezzon3Humberto Gomes Ferraz4Faculty of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Butantã, São Paulo CEP 05508-900, BrazilInstitute of Geosciences, University of São Paulo, Rua do Lago 562, São Carlos, São Paulo CEP 05508-080, BrazilInstitute of Geosciences, University of São Paulo, Rua do Lago 562, São Carlos, São Paulo CEP 05508-080, BrazilCentre for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Av. dos Estados, 5001, Santo André, São Paulo CEP 09210580, BrazilFaculty of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, Butantã, São Paulo CEP 05508-900, BrazilCalcium carbonate (CaCO<sub>3</sub>) from the seaweed <i>Lithothamnium calcareum</i> is a suitable dietary supplement for the prevention of osteoporosis, due to its chemical composition. This study compared CaCO<sub>3</sub> from <i>L. calcareum</i> to CaCO<sub>3</sub> from oyster shell and inorganic minerals that are already used in the pharmaceutical industry. The Rietveld refinement of the XRD showed that the mineral fraction of <i>L. calcareum</i> is composed of aragonite (50.3 wt%), magnesian calcite (45.3 wt%), calcite (4.4 wt%), comin contrast to oyster shell and inorganic minerals, which contain only calcite. The morphology of <i>L. calcareum</i> carbonate particles is granular xenomorphic, which is distinct from the scalenohedral form of inorganic calcite and the fibrous and scale-like fragments of oyster shell. The crystal structures of aragonite and magnesian calcite, present in <i>L. calcareum</i>, have higher contents of oligoelements than the pure calcite in other materials. The isotopic composition (stable isotopes of carbon and oxygen) is heavy in the CaCO<sub>3</sub> from <i>L. calcareum</i> (δ<sup>13</sup>C = 1.1‰; δ<sup>18</sup>O = −0.1‰) and oyster shell (δ<sup>13</sup>C = −4‰; δ<sup>18</sup>O = −2.8‰) in marked contrast to the much lighter isotopic composition of inorganic mineral CaCO<sub>3</sub> (δ<sup>13</sup>C = −19.2‰; δ<sup>18</sup>O = −26.3‰). The differences indicated above were determined through principal component analysis, where the first and second principal components are sufficient for the clear distinction and traceability of CaCO<sub>3</sub> sources.https://www.mdpi.com/2673-6497/2/2/13calcium carbonate<i>Lithothamnium calcareum</i>traceability of CaCO<sub>3</sub> sourcestrace elements in calcium carbonates |
spellingShingle | Rosana Pereira da Silva Giovanna Sayuri Domingues Kawai Fabio Ramos Dias de Andrade Vinicius Danilo Nonato Bezzon Humberto Gomes Ferraz Characterisation and Traceability of Calcium Carbonate from the Seaweed <i>Lithothamnium calcareum</i> Solids calcium carbonate <i>Lithothamnium calcareum</i> traceability of CaCO<sub>3</sub> sources trace elements in calcium carbonates |
title | Characterisation and Traceability of Calcium Carbonate from the Seaweed <i>Lithothamnium calcareum</i> |
title_full | Characterisation and Traceability of Calcium Carbonate from the Seaweed <i>Lithothamnium calcareum</i> |
title_fullStr | Characterisation and Traceability of Calcium Carbonate from the Seaweed <i>Lithothamnium calcareum</i> |
title_full_unstemmed | Characterisation and Traceability of Calcium Carbonate from the Seaweed <i>Lithothamnium calcareum</i> |
title_short | Characterisation and Traceability of Calcium Carbonate from the Seaweed <i>Lithothamnium calcareum</i> |
title_sort | characterisation and traceability of calcium carbonate from the seaweed i lithothamnium calcareum i |
topic | calcium carbonate <i>Lithothamnium calcareum</i> traceability of CaCO<sub>3</sub> sources trace elements in calcium carbonates |
url | https://www.mdpi.com/2673-6497/2/2/13 |
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