Nutritional and Functional Potential of Selliera radicans Cav., a Chilean Native Halophyte

Abstract

In Chile, Selliera radicans grows naturally from region Atacama to region Aysén del General Carlos Ibañez del Campo, in riparian zones near rivers, lakes, and the sea. Local inhabitants know this creeping herbaceous plant as "hierba de las marismas". It is characterized by stolons that hold nodal fibrous roots, succulent green, shiny leaves, and small white flowers. It is easy to propagate, grows relatively quickly, and survives temporary flooding. In addition, it is used in landscaping as a groundcover in gardens and green roofs in houses. 25 ABSTRACT Background: Selliera radicans was recognized as one of the foods consumed by the oldest human settlement in America (Monte Verde, Chile) that had a diet with a high component of plants. Objective: This study aims at investigating nutritional and functional characteristics of S. radicans, a native halophyte from Chile. Materials and Methods: An analysis of total protein, carbohydrate, ash, and moisture from S. radicans leaves was performed, using standard methods. The content of macro and micronutrients was quantified by atomic absorption spectrometry. The inulin content was carried out based on the Seliwanoff reactions. S. radicans leaves were extracted with methanol and the total content of phenolic and flavonoids and antioxidant activity were evaluated by spectroscopic method. Results: Leaves from cultivated plants proved to be a suitable source of proteins (7.5 % on DW), ash (6.8 % on DW), and a wide range of macro and micronutrients, where Ca, K, and Na had the highest values. In addition, inulin (2.3% on DW), total phenolics (63.4 GAE/g LDW) and flavonoids (21.8 QE/g LDW), and antioxidant capacity (10 TE/g LDW) were noted. Conclusions: According to the results, cultivated S. radicans leaves are promising sources of food with beneficial health properties.