Preliminary Assessment of Four Wild Leafy Species to Be Used as Baby Salads

Abstract

Wild edible leafy plants, thanks to their organoleptic characteristics and nutritional value that can make them be appreciated as salads by consumers, represent a good opportunity for growers and the fresh-cut industry, which are always looking for new crops to expand the number of products they offer. In this study, four wild species (dandelion, sorrel, wild chicory, and wild lettuce) were cultivated hydroponically up to the baby leaf stage in order to evaluate them as potential crops. At harvest, yield and antioxidant compounds, minerals, and nitrates content were assessed. The contribution to human mineral intake and the possible health risk associated with heavy metals were investigated. A characterization of the sensory profile was also carried out. Yield and chlorophylls and carotenoids content of the investigated species were comparable to those of common leafy vegetables. Variability in nitrate content was observed, with the lowest value in sorrel and the highest in dandelion. All species could contribute in Cr, Mg, and Se intake, and health risks due to heavy metals were excluded. Each species was well characterized by distinctive and peculiar sensory notes. In conclusion, the results of this preliminary study suggest that the four wild investigated species may be promising for baby leaf production.

Wild Plant Species as Potential Horticultural Crops: An Opportunity for Farmers and Consumers

“…Wild edible leafy plants are a rich source of nutrients, antioxidants and have special organoleptic features that are highly appreciated by consumers. Baldi et al [2] cultivated four wild edible leafy vegetables, namely dandelion, sorrel, wild chicory, and wild lettuce (Taraxacum campylodes G.E.Haglund, Rumex acetosa L., Cichorium intybus L., and Lactuca serriola L., respectively) in a floating hydroponic system, to evaluate their performance from an agronomical, chemical, nutritional, and sensory point of view. Plants were grown for 7 weeks and harvested at the baby leaf stage.…”