Martínez-Esplá Alejandra, Valero Daniel, Martínez-Romero Domingo, Castillo Salvador, Giménez María José, García-Pastor Maria Emma, Serrano María, Zapata Pedro Javier
Department of Food Technology, School of Engineering of Orihuela (EPSO) and ‡Department of Applied Biology, School of Engineering of Orihuela (EPSO), University Miguel Hernández , Carretera de Beniel, km 3.2, 03312 Orihuela, Alicante, Spain.
J Agric Food Chem. 2017 Oct 25;65(42):9247-9254. doi: 10.1021/acs.jafc.7b03447. Epub 2017 Oct 11.
The effects of methyl jasmonate (MeJa) treatment as an elicitor of artichoke plants [Cynara cardunculus var. scolymus (L.) Fiori] on the yield and quality attributes of artichokes, especially those related to individual phenolic content and antioxidant activity, at two harvest dates and along storage were analyzed in this research. Plants treated gave a higher yield of artichokes in comparison to control plants, with 0.55 kg more per plant. MeJa treatment also increased artichoke quality and phenolic content in the edible fraction at harvest and during storage at 2 °C for 28 days as a result of the accumulation of hydroxycinnamic acids and luteolin derivatives. In addition, antioxidant activity was enhanced by MeJa treatment and correlated with the total phenolic content. Results suggest that MeJa foliar application could be a simple and practical tool to improve the yield and phytochemical content on artichokes, with elicitation being a cheap and environmentally friendly procedure to improve the health-beneficial effects of artichoke consumption.
本研究分析了茉莉酸甲酯（MeJa）处理作为洋蓟植物[刺苞菜蓟（Cynara cardunculus var. scolymus (L.) Fiori）]的激发子，在两个收获期以及贮藏过程中对洋蓟产量和品质属性的影响，尤其是那些与单个酚类含量和抗氧化活性相关的属性。与对照植株相比，经处理的植株洋蓟产量更高，每株多0.55千克。由于羟基肉桂酸和木犀草素衍生物的积累，MeJa处理还提高了收获时以及在2℃下贮藏28天期间可食用部分的洋蓟品质和酚类含量。此外，MeJa处理增强了抗氧化活性，且抗氧化活性与总酚含量相关。结果表明，叶面喷施MeJa可能是提高洋蓟产量和植物化学物质含量的一种简单实用的方法，诱导是一种廉价且环保的程序，可提高食用洋蓟对健康有益的效果。
