Antioxidant Potential and Some Chemical and Sensorial Characteristics of Physalis angulata L. Cultivated Hydroponically with Desalinization Wastewater

摘要

An experiment was carried out to evaluate the hydroponic growth of Physalis angulata L. using desalinated wastewater in the composition of the nutritive solution, and to evaluate the chemical and sensorial traits of the fruits obtained by this production system. The control treatment solution had a conductivity level of 3.0 dS/m. The treatment solution tested had a conductivity level of 9.0 dS/m and was obtained by the use of desalinated wastewater. The first fruits were harvested at day 118 and the productivity was approximately 3.15 kg of fruits per plant in both treatments. The lipid levels did not significantly differed between treatments. The fatty acids in the lipid fraction were C18:2, C18:1, C16:0, C18:3. The total phenolic contents were 6.21 and 6.46 mg/100 g for the control treatment and for the tested treatment, respectively. The antioxidant activities using the methods ABTS and DPPH were 3.18 and 2.09 μmol/g for the control treatment and 3.40 and 2.26 mol/g for the tested treatment. The sensorial test indicated that the general appearance and taste of the fruits were accepted by the testers who gave significantly superior grades for the taste of the fruits produced by the 9 dS/m treatment. The good productivity of the fruits, the fatty acids profile observed and the antioxidant properties of fruits, suggest that the production of Physalis angulata L. in hydroponic system NFT using desalinated wastewater is an attractive and sustainable option for residue recycling, allowing the production of a functional food well accepted by the consumers and with large benefits for human health.