Author(s): Michael Allaby
Dry raw material of both peppermint and sweet basil obtained with the application of different hydroponic methods exceeds soil culture 1.2-2.7 times. A high output (1.2-3.1 times) of secondary origin bioactive substances was obtained in plant raw material of peppermint and sweet basil grown in different hydroponics systems. Peppermint and sweet basil grown in conditions of different hydroponics systems and soil culture can be natural sources of antioxidants. Antioxidant activity of 5 mg/ml peppermint was 68% to 84% and in case of 1 mg/ml sweet basil 23% to 31%. Developing new and low cost hydroponics systems is one of the most important issues for increasing the economic efficiency of plant soilless culture and its wide spread in the world. The most promising among them is water-stream hydroponics system developed in Institute of Hydroponics Problems NAS RA the result of 25-year investigations, with use of polymer film which enables to sharply decrease (5-6 times) expenditures for building a hydroponicum.