Tilahun Shimeles, Baek Min Woo, An Ki-Seok, Choi Han Ryul, Lee Jong Hwan, Tae Su Ho, Park Do Su, Hong Jin Sung, Jeong Cheon Soon
Agriculture and Life Science Research Institute, Kangwon National University, Chuncheon 24341, Republic of Korea.
Department of Horticulture and Plant Sciences, Jimma University, Jimma 378, Ethiopia.
Foods. 2024 Mar 4;13(5):789. doi: 10.3390/foods13050789.
This study investigated the impact of Methyl Jasmonate (MeJA) application on the nutritional content and yield of five different colored radish microgreens. Microgreens were produced without substrate and subjected to 0.5 mM and 1.0 mM MeJA treatments on the 7th day, three days before harvest. The parameters measured included yield, dry matter, minerals, amino acids, secondary metabolites such as chlorophylls (Chls), anthocyanins, flavonoids, phenolics, glucosinolates (GSLs), vitamin C, and antioxidant capacity. MeJA at 1.0 mM generally improved yield and dry weight across cultivars, and all microgreens exhibited rich mineral and amino acid composition, with the influence of cultivar being more significant than MeJA treatment. However, MeJA enhanced all cultivars' anthocyanins, GSLs, phenolics, flavonoids, and antioxidant activities. Generally, as the antioxidant capacity is the primary factor influencing the nutritional quality of microgreens, MeJA-treated microgreens, especially with selected superior cultivars such as 'Asia purple' and 'Koregon red', could offer a potential for cultivation of value-added, eco-friendly microgreens with substrate-free cultivation.
本研究调查了茉莉酸甲酯（MeJA）处理对五种不同颜色萝卜芽苗菜营养成分和产量的影响。芽苗菜在无基质条件下生产，并在收获前三天即第7天进行0.5 mM和1.0 mM MeJA处理。所测量的参数包括产量、干物质、矿物质、氨基酸、叶绿素（Chls）、花青素、黄酮类化合物、酚类化合物、硫代葡萄糖苷（GSLs）、维生素C等次生代谢产物以及抗氧化能力。1.0 mM的MeJA通常提高了各品种的产量和干重，所有芽苗菜均表现出丰富的矿物质和氨基酸组成，品种的影响比MeJA处理更为显著。然而，MeJA提高了所有品种的花青素、GSLs、酚类化合物、黄酮类化合物和抗氧化活性。一般来说，由于抗氧化能力是影响芽苗菜营养品质的主要因素，经MeJA处理的芽苗菜，尤其是选用如“亚洲紫”和“科雷贡红”等优良品种，可为无基质栽培增值、环保型芽苗菜提供栽培潜力。
