期刊
FOOD CHEMISTRY
卷 173, 期 -, 页码 600-606出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2014.10.077
关键词
Carotenoids; Irradiance level; Light-emitting diodes; Light spectrum; Microgreens
资金
- Research Council of Lithuania [SVE-03/2011]
The objective of this study was to evaluate the effects of irradiance levels and spectra produced by solid-state light-emitting diodes (LEDs) on carotenoid content and composition changes in Brassicaceae micro-greens. A system of five high-power, solid-state lighting modules with standard 447-, 638-, 665-, and 731-nm LEDs was used in the experiments. Two experiments were performed: (1) evaluation of LED irradiance levels of 545, 440, 330, 220, and 110 mu mol m(-2) s(-1) photosynthetically active flux density (PPFD) and (2) evaluation of the effects of 520-, 595-, and 622-nm LEDs supplemental to the standard set of LEDs. Concentrations of various carotenoids in red pak choi and tatsoi were higher under illumination of 330440 440 mu mol m(-2) s(-1) and at 110-220 mu mol m(-2) S-1 in mustard. All supplemental wavelengths increased total carotenoid content in mustard but decreased it in red pak choi. Carotenoid content increased in tatsoi under supplemental yellow light. (C) 2014 Elsevier Ltd. All rights reserved.
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