Determination of metal content in some herbal drugs—Empirical and chemometric approach

Ražić, Slavica; Onjia, Antonije; Dogo, S.; Slavkovic, Latinka; Popović, Aleksandar

doi:10.1016/j.talanta.2005.03.023

Cited by 63 publications

(31 citation statements)

References 15 publications

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“…This multivariate statistical method was used previously to study the differences and similarities between the medicinal plant samples, as well as to finding the factors which are responsible for that differentiation (Razic et al, 2005). In our study, the matrix of experimental data contained the results of the determination of elements and their water extractable forms as columns (10 variables) and 44 samples of medicinal plants as rows.…”

Section: Principal Component Analysismentioning

confidence: 99%

“…The problem of recognition of total level of essential elements in medicinal plants has been investigated (Plessi et al, 1998;Razic et al, 2005). However, only a few authors (Basgel and Erdemoglu, 2006;Lesniewicz et al, 2006;Kalny et al, 2007) have focused on the relation between the total concentration of an element and its waterextractable species.…”

Section: Introductionmentioning

confidence: 99%

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Bioavailable inorganic forms of essential elements in medicinal plants from Northern Poland

Konieczyński

Wesołowski

Radecka

et al. 2011

Chemical Speciation & Bioavailability

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Medicinal plants originating from different natural locations in Northern Poland representing four different plant species: Betula pubescens Ehr., Achillea millefolium L., Urtica dioica L. and Hypericum perforatum L. were analysed. The aim was to determine the contents of P, N, Fe and Zn in these medicinal plants, and to assess the bioavailable inorganic forms of these elements obtained by aqueous extraction. The concentrations of total P and N and their extractable species were determined in mg g À 1 of dry plant weight (dry wt), and the concentrations of N -NO 3 , Fe and Zn and their extractable species in the range of mg kg À 1 of dry wt. In all birch leaf samples, the maximum amount of total and extractable Zn was found, whereas the highest total and extractable concentrations of N, P and Fe were obtained in nettle herbs. Statistically significant correlations between 13 pairs of total and extractable forms of studied elements were found. Principal component analysis of the experimental data allowed differentiation of the plant material based on its elemental contents, and identified total P and Zn and its extractable forms, as the crucial factors responsible for that differentiation. Comparison with the dietary reference intakes showed that the plant materials are poor sources of bioavailable P, Fe and Zn, and that contents of nitrates do not exceed the acceptable daily intakes norms.

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Section: Principal Component Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bioavailable inorganic forms of essential elements in medicinal plants from Northern Poland

Konieczyński

Wesołowski

Radecka

et al. 2011

Chemical Speciation & Bioavailability

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“…infections, insects, planting density, competition with other plant species, seeding time, and genetic factors, play an important role in producing uniform herbal products [104]. Plant collection for the use in botanicals is one of the factors of concern for quality.…”

Section: Pesticide Residuementioning

confidence: 99%

Protocols on safety, efficacy, standardization, and documentation of herbal medicine (IUPAC Technical Report)

Mosihuzzaman

Choudhary

2008

Pure and Applied Chemistry

112

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This Technical Report compiles and analyzes the current scientific knowledge on herbal medicine and highlights the practical ways for ensuring the safety of herbal preparations and evaluating their claimed efficacy. Emphasis has been given to the methods for standardization of herbal medicine and the ways and means for moving forward to achieve the difficult goal of preparing herbal medicines of consistent quality and effects. Pragmatic approaches have been recommended to overcome the difficulties in (i) protecting intellectual property rights (IPR); (ii) producing safe, potent, standardized, and affordable herbal medicine; and (iii) documenting the knowledge base on herbal medicine in an easily accessible format.

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“…15 Closed systems (microwave) for the digestion of solid samples containing acid mixtures or concentrated acids have been used in the determination of several elements in complex matrices. [16][17][18][19][20] Spectrometric techniques of atomic absorption and emission, such as flame atomic absorption spectrometry (FAAS) 21 and graphite furnace atomic absorption spectrometry (GF AAS), 22 are largely used. Inductively coupled plasma optical emission spectrometry (ICP OES) 23 and inductively coupled plasma mass spectrometry (ICP-MS) 24 are used for the determination of trace metals (concentration lower than 1 μg mL -1 ) in biological matrices due to high sensitivity, versatility, multielement analysis, ruggedness and speed of analysis.…”

mentioning

confidence: 99%

Multielement Determination of Macro and Micro Contents in Medicinal Plants and Phytomedicines from Brazil by ICP OES

Júnior¹,

Matos²,

Andrade³

et al. 2016

Journal of the Brazilian Chemical Society

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In this study, the elemental composition of nine medicinal plants and phytomedicines was evaluated by using axial view inductively coupled plasma optical emission spectrometry (ICP OES) after three digestion procedures: dry ashing (DA) and two wet digestions with a mineral acid (HNO 3 /H 2 O 2 ) mixture on a conventional hot plate (CD), besides microwave digestion (MW). Accuracy was assessed from spinach leaves (CRM 1570a) and recovery values were in the range of 82 to 113.8%. Precisions, such as relative standard deviation (RSD), below 10% were reached. The MW procedure was preferred for its accuracy (recovery values of 94 to 102%), reduced contamination, increase in the efficiency of the decomposition process, lower residual acidity and reduced time required for digestion. The concentrations of analytes in the samples (minimummaximum in μg g ). The levels of Al, Ba, Cd, Cr, Mo, Pb, Se and V in all investigated samples were found to be below the limit of detection of ICP OES. The multielement analysis by ICP OES showed that the method is simple, fast and reliable for the multielement determination in medicinal plants and phytomedicines.

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Determination of metal content in some herbal drugs—Empirical and chemometric approach

Cited by 63 publications

References 15 publications

Bioavailable inorganic forms of essential elements in medicinal plants from Northern Poland

Bioavailable inorganic forms of essential elements in medicinal plants from Northern Poland

Protocols on safety, efficacy, standardization, and documentation of herbal medicine (IUPAC Technical Report)

Multielement Determination of Macro and Micro Contents in Medicinal Plants and Phytomedicines from Brazil by ICP OES

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