More health-supporting substances and taste in the storage organ of vegetables by colored foils

Authors

  • Olga Gorbachevskaya Institut für Agrar- und Stadtökologische Projekte an der Humboldt-Universität zu Berlin (IASP), Berlin
  • Christel Kappis Institut für Agrar- und Stadtökologische Projekte an der Humboldt-Universität zu Berlin (IASP), Berlin
  • Hendrikje Schreiter Institut für Agrar- und Stadtökologische Projekte an der Humboldt-Universität zu Berlin (IASP), Berlin
  • Steffi Tschuikowa Institut für Agrar- und Stadtökologische Projekte an der Humboldt-Universität zu Berlin (IASP), Berlin

Keywords:

Light spectra, red-blue ratio, dark red, coloured films, kohlrabi, radish, antioxidants, riboflavin

Abstract

The effect from changing of the light spectra concerning the red-blue relation and the percentage in dark red (700 nm ± 30) on the building of the storage organ of vegetables were confirmed in several scientific works. This effect can be accompanied by an increased antioxidant concentration in the storage organ. In the field tests carried out by the IASP 2015 with kohlrabi and radish different light spectra were generated by transparent coloured foils (red, green, yellow and colourless). These light spectra were applied temporary only during certain development stages of the plants to induce plant reactions. The experiments revealed that this light impulse has above all an influence on the content of the antioxidants and the sugar concentration of the storage organs. Effects on the size of the organs (bulb of kohlrabi, root of radish) were insignificant.

It became apparent that a change of the light spectrum makes sense in some development stages of the plants only. At the same time it was found that the coloured foils have different effects on the content of the antioxidants in the examined cultures. For example, the riboflavin content in the kohlrabi under the green foil was positively influenced. It was five times as much as in the control. In radish more riboflavin was synthesized under the red foil, it was 48% more than in the control.

DOI: 10.5073/JfK.2016.08.02, https://doi.org/10.5073/JfK.2016.08.02

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Published

2016-08-01

Issue

Vol. 68 No. 8 (2016)

Section

Original Article

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