Effects of Fertilization, Crop Year, Variety, and Provenance Factors on Mineral Concentrations in Onions

Ariyama, Kaoru; Nishida, Tadashi; Noda, Tomoaki; Kadokura, Masashi; Yasui, Akemi

doi:10.1021/jf0525481

Cited by 59 publications

(59 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, we found a negative correlation between the stalk and cap BCFs and the pH values of the respective soils, for both total chromium and hexavalent chromium. This is in accordance with the findings of other authors in an experiment performed on mineral contents in onions (15). In fact, the pH of the soils influences the metal contents of the vegetables, with the lowering of pH values normally favoring the uptake of the metals.…”

Section: Resultssupporting

confidence: 93%

See 1 more Smart Citation

Validation of an Electrothermal Atomization Atomic Absorption Spectrometry Method for Quantification of Total Chromium and Chromium(VI) in Wild Mushrooms and Underlying Soils

Figueiredo

Soares

Baptista

et al. 2007

J. Agric. Food Chem.

View full text Add to dashboard Cite

An ETAAS method was validated to quantify total Cr and Cr VI in mushrooms and the underlying soils. The method includes a sample pretreatment for total Cr dissolution using a wet acid digestion procedure and a selective alkaline extraction for Cr VI . The limits of detection were, expressed in µg/L, 0.15 and 0.17 for total Cr and Cr VI , respectively. The linearity ranges under the optimized conditions were 0.15-25.0 and 0.17-20.0 µg/L for total Cr and Cr VI , respectively. The limits of quantification were, expressed in µg/g of dry weight, 0.0163 and 0.0085 for total and hexavalent chromium, respectively. The precision of the instrumental method for total Cr and Cr VI was lower than 1.6%, and for the analytical method, it was lower than 10%. The accuracy of the method for Cr VI quantification was evaluated by the standard additions method, with the recoveries being higher than 90% for all of the added concentrations. For total Cr, certified reference materials (lichen CRM 482 and soil sample NCS ZC73001) were used. An interference study was also carried out in a mushroom simulated matrix, and it was verified that the deviations of the expected values were lower than 4.0% for both total Cr and Cr VI . The validated method was applied to the evaluation of total Cr and Cr VI in 34 wild mushrooms and 34 respective underlying soil samples collected in two different regions of Portugal (Beira Interior and Trá s-os-Montes), with different locations regarded as noncontaminated or contaminated areas. The species were identified by a mycologist and subdivided into 10 genera and 15 species: Amanita (rubescens, muscaria, and ponderosa), Boletus (regius), Lactarius (deliciosus, vellereus, and piperatus), Suillus (granulatus and luteus), Tricholoma (acerbum), Agaricus (sylvicola), Volvariella (gloiocephala), Lecopaxillus (giganteus), Macrolepiota (procera), and Psilocybe (fascicularis). The mean values found for total Cr were 1.14 and 1.11 µg/g of dry weight, and for Cr VI , the mean values were 0.103 and 0.143 µg/g of dry weight for cap and stalk, respectively. For soils, the mean concentrations found were, for total Cr, 84.0 µg/g and, for Cr VI , 0.483 µg/g. The bioconcentration factors (BCFs) based on dry weight for cap and stalk were determined, and the values found, for both total Cr and Cr VI , were always <1, although for hexavalent chromium, the BCFs were 10 times higher than for total chromium. KEYWORDS: Mushroom; soil; total Cr; Cr VI ; atomic absorption spectrometry INTRODUCTIONHeavy metals are considered to be among the most pollutant agents in all of the environmental compartments. In the soils, heavy metals are derived from natural components or geological sources, as well as from anthropogenic activities. Apart from the occupational exposure, the human exposure to toxic metals is mainly through the diet, and the vegetable fraction is an important contribution for metal intake.Mushrooms constitute part of the human diet because they provide carbohydrates, proteins, vitamins, and minerals (1). Moreover, mushroom...

show abstract

Section: Resultssupporting

confidence: 93%

“…The identification and edibility of the mushrooms was performed by expert mycologists. In Beira Interior, 15 The underlying soil samples were collected with a plastic spade, and the roots, small stones, gravel, leaves, sticks, and other external materials were removed.…”

Section: Reagents and Materialsmentioning

confidence: 99%

Validation of an Electrothermal Atomization Atomic Absorption Spectrometry Method for Quantification of Total Chromium and Chromium(VI) in Wild Mushrooms and Underlying Soils

Figueiredo

Soares

Baptista

et al. 2007

J. Agric. Food Chem.

View full text Add to dashboard Cite

show abstract

“…These differences could be mostly due to the lower water content of "Vatikiotiko" as well as to different growing conditions in comparison to other genotypes (Ariyama et al, 2006). Therefore, considering the use of onion as spice, food flavoring or raw in salads and the relatively small daily consumption, the higher nutritional value of "Vatikiotiko" onion could be more beneficial for human health, since the consumption of 100 g of raw onion could provide with 52-62% more protein, 42-45% more carbohydrates and 43-46% more energy comparing to the other genotypes.…”

Section: Nutritional and Chemical Evaluationmentioning

confidence: 99%

Morphological, nutritional and chemical description of “Vatikiotiko”, an onion local landrace from Greece

et al. 2015

View full text Add to dashboard Cite

ABSTRACT"Vatikiotiko" is an onion local landrace from Greece with special quality features, such as strong and pungent taste and storability. In this study, we tried for the first time to describe this landrace and record its morphological traits and nutritional value in comparison with commercially cultivated genotypes ("Creamgold", "Red Cross F1" and "Sivan F1"). Nutritional value of "Vatikiotiko" was higher than commercial genotypes, whereas total sugars, fructose and glucose content were lower in "Vatikiotiko" and "Creamgold" onions. Fatty acids composed mostly from polyunsaturated fatty acids (linoleic and α-linolenic acid), whereas for "Vatikiotiko" saturated and monounsaturated fatty acids were detected in equal amounts (29.79 and 30.60%, respectively). "Vatikiotiko" and "Creamgold" had low antioxidant activity (DPPH radical scavenging activity), especially when comparing with "Sivan F1" and "Red Cross F1", whereas no flavonoids were detected in "Vatikiotiko". The overview of "Vatikiotiko" landrace supported its special character regarding its nutritional value (sugar content, mineral composition and fatty acids profile) and the necessity to revalorize and protect its traditional culture. The potential of introducing it as Protected Designation of Origin (PDO) or Protected Geographical Indication (PGI) product has also been discussed.

show abstract

“…(n=3) 2) The 200 ppm dose of α-tocopherol (Sigma Co., USA), BHA (Sigma Co., USA), BHT (Sigma Co., USA), respectively, were used as a reference. 3) Mean values having the same superscripts in each column are not significantly different (p<0.05) by Duncan's test.…”

mentioning

confidence: 99%

Potential of Onion Peel Extract as a Functional Ingredient for Functional Foods

Jeon¹,

Baek²,

Jeong³

et al. 2012

Journal of Life Science

View full text Add to dashboard Cite

Onion peels is a natural source of high-value functional ingredients produced in the onion industry without suitable processing. The objective of this study was to evaluate characteristics of onion peel extract (OPE), including its biological activities, obtained from solvent extraction in 3 times pilot scales (Lot A, B, and C). Mineral analysis showed that K was present in the largest amount (13,767.56-15,506.78 ppm), followed by Na and Ca at 8,602.44-9,796.00 ppm and 4,255.78-4,903.33 ppm, respectively. The amounts of total phenol, total flavonoid, and quercetin in the OPE were in the ranges of 598.57~626.73, 211.73~233.64, and 93.78~107.29 mg/g, respectively. The biological activities such as antioxidant and effects of fibrinolysis increased in parallel with the concentration of OPE. The IC50 value of DPPH radical scavenging activity was in the range of 517.58~557.32 ppm in the OPE. The IC50 value for superoxide dismutase (SOD)-like activity was in the range of 11,900.91~12,690.35 ppm. A clear zone of OPE (20,000 ppm) in fibrinolysis test was three times higher than the plasmin as a reference. In conclusion, OPE could be used as a good source of antioxidants and fibrinolytic activities.

show abstract

Effects of Fertilization, Crop Year, Variety, and Provenance Factors on Mineral Concentrations in Onions

Cited by 59 publications

References 13 publications

Validation of an Electrothermal Atomization Atomic Absorption Spectrometry Method for Quantification of Total Chromium and Chromium(VI) in Wild Mushrooms and Underlying Soils

Validation of an Electrothermal Atomization Atomic Absorption Spectrometry Method for Quantification of Total Chromium and Chromium(VI) in Wild Mushrooms and Underlying Soils

Morphological, nutritional and chemical description of “Vatikiotiko”, an onion local landrace from Greece

Potential of Onion Peel Extract as a Functional Ingredient for Functional Foods

Contact Info

Product

Resources

About