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Effect of supplemental UV-A irradiation in solid-state lighting on the growth and phytochemical content of microgreens

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Brazaityte A., Virsile A., Jankauskiene J., Sakalauskiene S., Samuoliene G., Sirtautas R., Novickovas A., Dabasinskas L., Miliauskiene J., Vastakaite V., Bagdonaviciene A., Duchovskis P.

International Agrophysics

2015

tom 29

nr 1

In this study, we sought to find and employ positive effects of UV-A irradiation on cultivation and quality of microgreens. Therefore, the goal of our study was to investigate the influence of 366, 390, and 402 nm UV-A LED wavelengths, supplemental for the basal solid-state lighting system at two UV-A irradiation levels on the growth and phytochemical contents of different microgreen plants. Depending on the species, supplemental UV-A irradiation can improve antioxidant properties of microgreens. In many cases, a significant increase in the investigated phytochemicals was found under 366 and 390 nm UV-A wavelengths at the photon flux density (12.4 μmol m-2 s-1). The most pronounced effect of supplemental UV-A irradiation was detected in pak choi microgreens. Almost all supplemental UV-A irradiation treatments resulted in increased leaf area and fresh weight, in higher 2,2–diphenyl–1–picrylhydrazyl free-radical scavenging activity, total phenols, anthocyanins, ascorbic acid, and α-tocopherol.

Ograniczanie wyników

1 International Agrophysics

1 Bagdonaviciene A.

1 Brazaityte A.

1 Dabasinskas L.

1 Duchovskis P.

1 Jankauskiene J.

1 Miliauskiene J.

1 Novickovas A.

1 Sakalauskiene S.

1 Samuoliene G.

1 Sirtautas R.

1 Vastakaite V.

1 Virsile A.

1 2015

Wyniki wyszukiwania

Effect of supplemental UV-A irradiation in solid-state lighting on the growth and phytochemical content of microgreens