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Mineral composition of frozen green asparagus

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Abstract

The contents of macroelements (Ca, Mg, Na, K y P) and trace elements (Cu, Fe, Zn and Mn) of frozen green asparagus were determined by atomic absorption spectrometry to investigate the possible changes during 45 and 90 days frozen storage at −18 °C. A significant decrease of mineral concentrations was observed at 45 days of frozen storage. After 90 days, modifications were not observed, except for Cu and P concentrations. The asparagus thickness factor resulted in significant differences in the Cu, Fe, Zn, Ca and K contents. Frozen storage time involved smaller percentages of mineral retention in the <11 mm spear for Ni, Ca, Mg, K and P, and, for the rest of mineral elements, the frozen storage effect was similar for both thicknesses (<11 mm and >14 mm). The highest mineral concentration was found in the apical portion or tip of green asparagus, except for Mn, Cr and K. Mineral retention percentages after frozen storage time were similar in both portions (apical and basal) of the spear.

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Acknowledgements

This research was funded by the Andalusian Regional Government, Department of Education and Science, Plan Andaluz de Investigación, group PAI-AGR 0170.

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Authors and Affiliations

  1. Department of Food Science and Technology, University of Córdoba, Campus Universitario de Rabanales, Edificio Darwin, 14014, Córdoba, Spain

    M. A. Amaro López, R. Moreno Rojas & G. Zurera Cosano

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  1. M. A. Amaro López
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  2. R. Moreno Rojas
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  3. G. Zurera Cosano
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Correspondence to M. A. Amaro López.

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Amaro López, M.A., Moreno Rojas, R. & Zurera Cosano, G. Mineral composition of frozen green asparagus. Eur Food Res Technol 219, 260–264 (2004). https://doi.org/10.1007/s00217-004-0928-z

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  • DOI: https://doi.org/10.1007/s00217-004-0928-z

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