Nutritional changes in the essential trace elements content of asparagus during industrial processing

López, Manuel Ángel Amaro; Rojas, Rafael Moreno; Cosano, G. Zurera; Segarra, Pedro José Sánchez

doi:10.1016/s0963-9969(99)00111-8

Cited by 22 publications

(11 citation statements)

References 21 publications

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“…It demonstrates a quite inhomogeneous water distribution along the spears with higher amounts of water contained in the apical parts of the spears than in the bases. This result is clearly in contrast with the finding of lower amounts of water in the spear tips compared to the rest of the spears based on classical weighing techniques (Culpepper and Moon, 1939;Amaro López et al, 1999). The center of the spears in Fig.…”

Section: Market-ready Spearscontrasting

confidence: 63%

“…In common with other kinds of vegetables, spears of white asparagus from distinct German cultivation areas mirror variations in soil composition by modifications in their element composition (Shalaby et al, 2004). Differences in the concentration of trace elements such as Cu, Fe, and Mn may, however, be only very small and can additionally be masked by the natural compositional variation between different asparagus genotypes (Shalaby et al, 2004) and/or by the effects of presale washing (Amaro López et al, 1999). Thus, it had to be clarified whether differences in the NMR-relevant trace elements of market-ready spears would be sufficiently pronounced to provoke clear, region-specific differences in the NMR properties.…”

Section: Introductionmentioning

confidence: 99%

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Comparing¹H‐NMR imaging and relaxation mapping of German white asparagus from five different cultivation sites

Menzel

Oros‐Peusquens

Pohlmeier

et al. 2007

Z. Pflanzenernähr. Bodenk.

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SummaryNuclear magnetic resonance imaging (MRI) and complementary analytical techniques were used to address the question whether white asparagus (Asparagus officinalis L.) from different cultivation sites in Germany can be distinguished on the basis of NMR relaxation times. Five locations with contrasting soil properties and composition within the two asparagus-cultivation regions Rhineland and Lower Franconia were selected for this project. For the first time, entire asparagus plants in their authentic soil environment excavated directly from the original harvest site were imaged by the NMR technique. However, they could not be employed for determination of relaxation times of spears in situ, because of artifacts arising from soil properties. Instead, market-ready asparagus spears and freshly prepared spear saps from the five locations were used to acquire MRI data sets with different (slow and fast) imaging methods and to compute spatially resolved distributions (maps) of T 1 , T 2 , and T 2 * relaxation times. Comparison of the data for pith, vascular tissue, and peel of the spears yielded only marginal, if any, differences in T 1 , T 2 , and T 2 * between the specimens from the five locations, which were not sufficient for an unambiguous regionrelated distinction. More pronounced differences in T 1 , T 2 , and T 2 * were visible for the spear saps, allowing a clear distinction between individual specimens for each of the two cultivation regions. The results are discussed in terms of an application potential for correlated NMR relaxation times of tissue saps for future geographic authentication of agricultural produces.

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Section: Market-ready Spearscontrasting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Comparing¹H‐NMR imaging and relaxation mapping of German white asparagus from five different cultivation sites

Menzel

Oros‐Peusquens

Pohlmeier

et al. 2007

Z. Pflanzenernähr. Bodenk.

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“…Elements harmful to human health may increase in crops due to the use of fertilizers, herbicides, and pesticides (Gimeno-García et al, 1996;Hernández et al, 2016;Mansour et al, 2009;Shaban et al, 2016). Also, industrial operations, such as cutting, peeling, washing, and blanching, may cause changes in nutritional components and mineral contents during food processing (Amaro López et al, 1999;Augustin et al, 2016;Murcia and Jiménez Martínez-Tomé, 2009). Thus, the consumption of edible wild plants is considered healthier than crops (Bacchetta et al, 2016;Guil-Guerrero, 2014).…”

Section: Metals and Metalloids In Wild Asparagus At Uncontaminated Anmentioning

confidence: 99%

Metals and Metalloids in Wild Asparagus at Uncontaminated and Mining‐Contaminated Sites

Biddau

Cidu

2017

J of Env Quality

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Wild edible plants are often considered healthier than crops because they are unaffected by fertilizers, herbicides, and pesticides. However, the occurrence of potentially toxic elements in wild plants is poorly known and needs to be assessed. In this study, 22 elements were determined by inductively coupled plasma mass spectrometry in wild asparagus ( L.). Asparagus shoots were collected in uncontaminated environments (20 sites) and in areas contaminated by past mining (15 sites) in Sardinia, Italy. Beryllium, Bi, Te, Tl, and U were not detected in asparagus (<0.03 μg g); Ag, As, Co, Cd, Li, and Sb were detected at very low levels (median, 0.01-0.05 μg g); B, Cu, Fe, Mn, Rb, and Zn were relatively abundant (median, 10-58 μg g); and Ba, Mo, Ni, Pb, and Sr showed large variations (median, 0.4, 0.3, 3, 0.1, and 0.5 μg g, respectively). Median concentrations of detected elements were similar in asparagus collected in uncontaminated environments or previously mined areas. An exception was Cd in asparagus collected in mined areas (median, 1.4 μg g), whose levels were much higher than in asparagus from uncontaminated environments (median, 0.01 μg g), indicating that high Cd in bedrocks affect contents in asparagus shoots. Also, Sb- and As-rich substrates in mined areas resulted in asparagus with Sb and As concentrations much higher than asparagus samples from areas mined predominantly for Pb and Zn. Results of this study indicate potential health hazards to residents living worldwide in areas affected by past mining.

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“…Macroelements and microelements of green asparagus [12] and A. officinalis [13] have been determined by atomic absorption spectrometry. Variations in trace elements of fresh white asparagus (A. officinalis, L.) as a function of varieties and thickness of spear have been investigated [14].…”

Section: Introductionmentioning

confidence: 99%

Variation of Trace Elements Contents in Asparagus racemosus (Willd)

Negi

Singh

Pant

et al. 2009

Biol Trace Elem Res

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The present study was carried out to determine the accumulation and variation of trace elements in roots and leaves of Asparagus racemosus collected from four different altitudes in Uttarakhand, India, by atomic absorption spectroscopy. The metals investigated were Zn, Cu, Mn, Fe, Co, Na, K, Ca, and Li. The concentration level of Fe was found to be highest at an altitude of 2,250 m, whereas the level of Cu was lowest. The maximum concentrations of Zn, Cu, Mn, Fe, Co, Na, K, Ca, and Li were found to be 165.0 +/- 3.2, 34.0 +/- 0.5, 84.0 +/- 0.7, 2,040.0 +/- 0.3, 122.0 +/- 1.5, 745.0 +/- 0.3, 13,260.0 +/- 3.5, 6,153.0 +/- 1.6, and 58.0 +/- 3.8 mg/kg, respectively.

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Nutritional changes in the essential trace elements content of asparagus during industrial processing

Cited by 22 publications

References 21 publications

Comparing¹H‐NMR imaging and relaxation mapping of German white asparagus from five different cultivation sites

Comparing¹H‐NMR imaging and relaxation mapping of German white asparagus from five different cultivation sites

Metals and Metalloids in Wild Asparagus at Uncontaminated and Mining‐Contaminated Sites

Variation of Trace Elements Contents in Asparagus racemosus (Willd)

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Nutritional changes in the essential trace elements content of asparagus during industrial processing

Cited by 22 publications

References 21 publications

Comparing1H‐NMR imaging and relaxation mapping of German white asparagus from five different cultivation sites

Comparing1H‐NMR imaging and relaxation mapping of German white asparagus from five different cultivation sites

Metals and Metalloids in Wild Asparagus at Uncontaminated and Mining‐Contaminated Sites

Variation of Trace Elements Contents in Asparagus racemosus (Willd)

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Product

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Comparing¹H‐NMR imaging and relaxation mapping of German white asparagus from five different cultivation sites

Comparing¹H‐NMR imaging and relaxation mapping of German white asparagus from five different cultivation sites