Department of Refrigeration and Food Concentrates, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, 30-149 Krakow, Poland.
Department of Refrigeration and Food Concentrates, Faculty of Food Technology, University of Agriculture in Krakow, Balicka 122, 30-149 Krakow, Poland.
Food Chem. 2019 Jul 1;285:53-58. doi: 10.1016/j.foodchem.2019.01.086. Epub 2019 Jan 19.
The aim of this study was to evaluate the impact of selected types of LED (light emitting diodes) lighting on the quality of alfalfa sprouts. In the experiment, cold white, warm white and multicolour: (red, green, blue-RGB) LEDs were applied, and dispersed sunlight was used as a control. The product was examined for the yield and the contents of dry matter, total polyphenols, ascorbic acid, chlorophylls, β-carotene, lutein, neoxanthin and violaxanthin. Cotyledons' mass in the whole plant increased under LED illumination and was up to 50% greater for sprouts grown in RGB light compared to those cultivated in dispersed sunlight. The highest chlorophyll and carotenoid pigment contents in cotyledons were observed under RGB LED and cold white treatments. Similarly, RGB LEDs allows one to obtain the product with the highest level of total phenolic compounds. The highest ascorbic acid content was observed in sprouts growing under sunlight, followed by RGB.
本研究旨在评估特定类型 LED（发光二极管）照明对紫花苜蓿芽品质的影响。实验中应用了冷白、暖白和多色（红、绿、蓝-RGB）LED，并以散射阳光作为对照。通过产量以及干物质、总多酚、抗坏血酸、叶绿素、β-胡萝卜素、叶黄素、玉米黄质和隐黄质含量对产品进行了检测。在 LED 光照下，整株植物的子叶质量增加，与在散射阳光下培养的芽相比，在 RGB 光下生长的芽增加了 50%。在 RGB LED 和冷白光处理下，子叶中的叶绿素和类胡萝卜素色素含量最高。同样，RGB LED 可以使人们获得总酚含量最高的产品。在阳光下生长的芽中观察到最高的抗坏血酸含量，其次是 RGB。
