Evaluation of the Mineral Content in Forage Palm (Opuntia ficus-indica Mill and Nopalea cochenillifera) Using Chemometric Tools

An acid digestion procedure of the forage palm ( Opuntia ficus-indica Mill and Nopalea cochenilifera ) employing a closed digestor block applied full 2 4 factorial design was optimized. The optimal conditions were HNO 3 5.0 mol L −1 , 2.0 mL of H 2 O 2 30% m m −1 , 120 min of digestion, and heating...

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Bibliographic Details
Published in:Biological trace element research 2021-10, Vol.199 (10), p.3939-3949
Main Authors: Santana, Filipe B., Silveira, Hilária F. A., Souza, Laís A., Soares, Sarah Adriana R., de Freitas Santos Júnior, Aníbal, Araujo, Rennan Geovanny O., Santos, Daniele Cristina M. B.
Format: Article
Language:English
Subjects:
Acid digestion
Biochemistry
Biomedical and Life Sciences
Biotechnology
Calcium
Cluster analysis
Design optimization
Digestion
Factorial design
Hydrogen peroxide
Leaves
Life Sciences
Magnesium
Mineral composition
Nutrition
Oncology
Opuntia ficus-indica
Principal components analysis
Tomatoes
Trace elements
Zinc
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Summary:An acid digestion procedure of the forage palm ( Opuntia ficus-indica Mill and Nopalea cochenilifera ) employing a closed digestor block applied full 2 4 factorial design was optimized. The optimal conditions were HNO 3 5.0 mol L −1 , 2.0 mL of H 2 O 2 30% m m −1 , 120 min of digestion, and heating temperature of 180 °C. The certified reference materials of apple leaves (NIST 1515) and tomato leaves (Agro C1003a) were used to evaluate the accuracy of the analytical method. The concentrations of the macroelements were (in % m m −1 ) Ca (1.32–3.71), K (0.88–5.29), Mg (0.70–1.78), and P (0.03–0.32). For the microelements, the concentrations (in μg g −1 ) obtained were As (
ISSN:0163-4984
1559-0720
DOI:10.1007/s12011-020-02484-2