Detection of High Levels of Bromine in Vegetables Using X-Ray Fluorescence Spectrometry

Mino, Yoshiki; Yukita, Mayumi

doi:10.1248/jhs.51.365

Cited by 17 publications

(12 citation statements)

References 7 publications

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“…The elemental content was determined by X-ray fluorescence spectrometry (Philips PW2404 PANalytical, MagiX PRO model, with automatic loader PW2540), equipped with logging data software and calibrated with standard chemicals supplied by PANalytical [11]. X-ray fluorescence spectrometry is a very reliable method for the quantification of a variety of elements in both organic and inorganic substrates.…”

Section: Sampling and Analytical Proceduresmentioning

confidence: 99%

Nutrients and Trace Elements Content of Wood Decay Fungi Isolated from Oak (Quercus ilex)

Campos

2011

Biol Trace Elem Res

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The presence of chemical elements and the differences in their concentration in the fruiting bodies of wood decay fungi may reflect their activity either as saprobes or parasites and the intimate physiological relation with the substrate from which they extract their nutrients. In order to test this hypothesis, we carried out a systematic sampling of eight species of wood decay fungi on oak (Quercus ilex). The data show that the concentration of some elements exhibits a very wide range of values for the species tested, which could mean that the relative content of some elements may provide clues about the nature of the substrate and, moreover, about the nutritional physiology. The comparison between the foliar analysis (FA) and the elemental content of fungi may shed light on the specific physiological behaviour of the species. Potassium is an element accumulated in fungal biomass in higher quantities than in the FA. By contrast, calcium appears in foliar analysis in much higher quantities than in fungal fruiting bodies' biomass. Concerning this element, we have also found profound differences between the two species phylogenetic groups and lifestyle. Of all elements measured, we believe that the relative accumulation of K and Ca may be related to the close connection between fungi and the substrate on which they live and may also explain their physiological role as saprobes or parasites. When the lifestyle and the systematic position of the different species sampled were compared, differences also emerged in the content of Na and Ca.

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Section: Sampling and Analytical Proceduresmentioning

confidence: 99%

Nutrients and Trace Elements Content of Wood Decay Fungi Isolated from Oak (Quercus ilex)

Campos

2011

Biol Trace Elem Res

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“…The analytical procedure for determination of elements was made through X-rays fluorescence spectrometry (PHILIPS-PW2404 Pananalytical, MagixPro model, with automatic loader PW2540), equipped with logging data software (Mino and Yukita 2005). This is one of the simplest, most accurate and most economic analytical methods for the determination of the chemical composition of many types of mineral and organic substrates.…”

Section: Sampling and Analytical Proceduresmentioning

confidence: 99%

Substrate role in the accumulation of heavy metals in sporocarps of wild fungi

2009

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The distribution of neodymium, lead, thorium and uranium was investigated in about 100 samples of 12 different species of common, edible and non-edible mushrooms collected in unpolluted areas in the province of Ciudad Real, Central Spain. The quantitative analysis of heavy metals was performed by X-ray fluorescence spectrometry (a simple, accurate and non-destructive method). The concentration of these elements was related to three factors: mushroom specie, life style/substrate and study area. The results reveal considerable amounts of the four metals in all species analyzed as well as significant differences on the capability to accumulate these elements. The maximum absorption of Nd and Pb was found in the ectomycorrhizal Cantharellus cibarius, reaching values of 7.10 and 4.86 microg g(-1), respectively. Thorium and uranium were mainly accumulated (3.63 and 4.13 microg g(-1), respectively) in Hypholoma fasciculare although it is an epiphyte species, isolated from the mineral particles of soil. The distribution patterns of these metals in sporocarps of different habitats and locations showed no significant differences, except for thorium, mainly accumulated in mushrooms living on wood regarding these living on soil organic matter. The species-specific is therefore the determining factor for accumulation of Nd, Pb, Th and U, more than substrate, in this study.

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“…Bromide levels in Boletus edulis have been reported in the range 0.2-2 g/kg by Di Narda et al (2001Narda et al ( , 2003. Mino and Yukita (2005) have reported levels of 15 mg kg -1 in Shiitake mushroom. In the case of food samples such as fungi, potatoes and capsicum, Spanish legislation has set a maximum limit of residues (MLRs) for inorganic bromide of 20 mg kg -1 based on weight of sample ready for consumption.…”

Section: Resultsmentioning

confidence: 99%

“…Crops growing in a soil fumigated with methyl bromide contain much more inorganic bromide than those produced in an environment free from this plaguicide (Mino and Yukita, 2005). A contribution to this inorganic bromide is coming from the breakdown product of methyl bromide and brominated fumigants (Di Narda et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Determination of low levels of bromide has traditionally been a difficult task, because of the strong dependence on the nature of the sample and interference caused by other species present in the matrix. Different methods have been reported for the determination of bromide in food: X-ray fluorescence spectrometry (Mino and Yukita, 2005), polarography (Vallon et al, 1980;Di Narda et al, 2003), flow injection analysis (Freeman et al, 1993), ion chromatography (Miyara and Saito, 1994), inductive coupled plasma mass spectrometry (Di Narda et al, 2001;Di Narda et al, 2003), and gas-chromatography mass spectrometry (Mishra et al, 2001). However, spectrophotometric methods have been the most use in government laboratories for quality control of bromide in water (normalized methods of analysis, 1992) because of their low cost and wide availability.…”

Section: Introductionmentioning

confidence: 99%

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Determination of Inorganic Bromide Content in Several Vegetable Foods

Baso-Cejas

Brito²,

Dı́az

et al. 2007

Bull Environ Contam Toxicol

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The phenol red spectrophotometric method has been studied and applied as an inexpensive screening method for the determination of bromide in vegetables samples. The concentration of bromide ranged from 3.65 to 14.42 mg kg(-1) in capsicum, 4.50 to 9.30 mg kg(-1) in potatoes, and 3.63 to 19.02 mg kg(-1) in fungi. The content of inorganic bromide in the studied vegetables was found to be below the maximum concentration of residues established by Spanish legislation (20 mg kg(-1)).

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Detection of High Levels of Bromine in Vegetables Using X-Ray Fluorescence Spectrometry

Cited by 17 publications

References 7 publications

Nutrients and Trace Elements Content of Wood Decay Fungi Isolated from Oak (Quercus ilex)

Nutrients and Trace Elements Content of Wood Decay Fungi Isolated from Oak (Quercus ilex)

Substrate role in the accumulation of heavy metals in sporocarps of wild fungi

Determination of Inorganic Bromide Content in Several Vegetable Foods

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