Influence of cultivation salinity in the nutritional composition, antioxidant capacity and microbial quality of Salicornia ramosissima commercially produced in soilless systems

•S. ramosissima was cultivated in a soilless system at six saline concentrations.•High saline concentrations strongly inhibit S. ramosissima growth.•Antioxidant content was higher in plants grown with low-intermediate salinity.•Soilless cultivation promoted a product with nutritional profile fit and safe.