Application of X-ray Spectroscopic Techniques to Determine the Inorganic Composition and Sulfur Chemical Speciation of the Amazonian Plant Bixa orellana

被引:0
作者
Gonzalez, Joselaine Caceres [1 ]
Simoes, Grazieli [2 ]
Bernini, Rafael B. [3 ]
Coutinho, Lucia H. [4 ]
Nunez, Cecilia Veronica [5 ]
Ferreira, Cristiane S. [6 ]
de Souza, Gerardo Gerson B. [2 ]
机构
[1] Univ Republica, Fac Engn, Montevideo 11300, Uruguay
[2] Univ Fed Rio de Janeiro, Inst Chem, Dept Phys Chem, BR-21941909 Rio De Janeiro, RJ, Brazil
[3] Univ Fed Rio de Janeiro, Campus Duque de Caxias, BR-25050100 Duque De Caxias, RJ, Brazil
[4] Univ Fed Rio de Janeiro, Inst Phys, BR-21941909 Rio De Janeiro, RJ, Brazil
[5] Natl Inst Amazonian Res, Bioprospect & Biotechnol Lab, Technol & Innovat Coordinat, BR-69067375 Manaus, AM, Brazil
[6] Univ Brasilia, Dept Bot, BR-70910900 Brasilia, DF, Brazil
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 17期
关键词
Bixa orellana; WD-XRF; XANES; sulfur chemical speciation; PRINCIPAL COMPONENT ANALYSIS; EDGE XANES SPECTROSCOPY; ABSORPTION-SPECTROSCOPY; PETROLEUM ASPHALTENES; FUNCTIONAL-GROUPS; OXIDATION-STATES; ANNATTO; SOIL; ENVIRONMENT; SPECTRA;
D O I
10.3390/app14177827
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Bixa orellana is a plant that has a variety of uses, such as applications in the food and cosmetic industries, as well as culinary uses, and body painting for Indigenous people. Despite its versatility, few studies have explored its inorganic composition, and its sulfur chemical speciation has only been assessed from the point of view of sulfurous amino acids. Here, we report on the inorganic composition of Bixa orellana fruits, pericarps, and seeds obtained using Wavelength Dispersive X-ray Fluorescence (WD-XRF) and sulfur chemical speciation using X-ray Absorption Near-Edge Structure (XANES). Our results show that the seed is a source of potassium, calcium, magnesium, and phosphorous. But also, the pericarp, which is considered waste, contains a high amount of nutrients. From the XANES measurements, the distribution of the oxidation state of the sulfur atom was obtained, and it was shown that although several oxidation states of sulfur are present, oxidized sulfur (sulfate) is the dominant form of sulfur in all samples.
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页数:12
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