Tilahun Shimeles, Baek Min Woo, An Ki-Seok, Choi Han Ryul, Lee Jong Hwan, Hong Jin Sung, Jeong Cheon Soon
Agriculture and Life Science Research Institute, Kangwon National University, Chuncheon, Republic of Korea.
Department of Horticulture and Plant Sciences, Jimma University, Jimma, Ethiopia.
Front Plant Sci. 2023 Sep 14;14:1236055. doi: 10.3389/fpls.2023.1236055. eCollection 2023.
Growing microgreens on trays without substrate in a vertical multilayered growing unit offers several advantages over traditional agriculture methods. This study investigated the yield performance and nutritional quality of five selections of radish microgreens grown in sprouting trays, without a substrate using only water, in an indoor multilayer cultivation system using artificial light. Various parameters were measured, including fresh weight, dry matter, chlorophyll, minerals, amino acids, phenolics, flavonoids, anthocyanins, vitamin C, glucosinolates, and antioxidant activity with four different assays. After ten days, the biomass had increased by 6-10 times, and the dry matter varied from 4.75-7.65%. The highest yield was obtained from 'Asia red', while the lowest was from 'Koregon red'. However, 'Koregon red' and 'Asia red' had the highest dry matter. 'Asia red' was found to have the highest levels of both Chls and vitamin C compared to the other cultivars, while 'Koregon red' exhibited the highest levels of total phenolics and flavonoids. Although variations in the levels of individual glucosinolates were observed, there were no significant differences in the total content of glucosinolates among the five cultivars. 'Asia purple' had the highest anthocyanin content, while 'Asia green 2' had the lowest. The K, Mg, and Na concentrations were significantly highest in 'Asia green 2', and the highest Ca was recorded in 'Asia purple'. Overall, 'Asia purple' and 'Koregon red' were the best cultivars in terms of nutritional quality among the tested radish microgreens. These cultivars exhibited high levels of dry weight, total phenolics, flavonoids, anthocyanins, essential and total amino acids, and antioxidant activities. Moreover, the implementation of this vertical cultivation method for microgreens, which relies solely on water and seeds known for their tall shoots during the sprouting could hold promise as a sustainable approach. This method can effectively be utilized for cultivar screening and fulfilling the nutritional and functional needs of the population while minimizing the environmental impacts associated with traditional agriculture practices.
在垂直多层种植单元中不使用基质在托盘上种植微型蔬菜比传统农业方法具有几个优势。本研究调查了在室内多层人工光照栽培系统中，仅用水在发芽托盘中种植的五个萝卜微型蔬菜品种的产量表现和营养品质。测量了各种参数，包括鲜重、干物质、叶绿素、矿物质、氨基酸、酚类、黄酮类、花青素、维生素C、硫代葡萄糖苷以及用四种不同测定方法测得的抗氧化活性。十天后，生物量增加了6至10倍，干物质含量在4.75%至7.65%之间变化。“亚洲红”产量最高，“科雷贡红”产量最低。然而，“科雷贡红”和“亚洲红”的干物质含量最高。与其他品种相比，“亚洲红”的叶绿素和维生素C含量最高，而“科雷贡红”的总酚类和黄酮类含量最高。虽然观察到各个硫代葡萄糖苷水平存在差异，但五个品种的硫代葡萄糖苷总含量没有显著差异。“亚洲紫”的花青素含量最高，“亚洲绿2号”的花青素含量最低。“亚洲绿2号”的钾、镁和钠浓度显著最高，“亚洲紫”的钙含量最高。总体而言，在测试的萝卜微型蔬菜中，“亚洲紫”和“科雷贡红”在营养品质方面是最佳品种。这些品种表现出高干重、总酚类、黄酮类、花青素、必需氨基酸和总氨基酸以及抗氧化活性。此外，这种仅依靠水和以发芽时茎高著称的种子来种植微型蔬菜的垂直栽培方法有望成为一种可持续的方法。这种方法可以有效地用于品种筛选，并满足人们的营养和功能需求，同时将与传统农业做法相关的环境影响降至最低。
