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Evidence-Based Complementary and Alternative Medicine
Volume 2014 (2014), Article ID 253875, 9 pages
http://dx.doi.org/10.1155/2014/253875
Research Article

Assessment of Total Phenolic and Flavonoid Content, Antioxidant Properties, and Yield of Aeroponically and Conventionally Grown Leafy Vegetables and Fruit Crops: A Comparative Study

1National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
2Department of Pharmacognosy, School of Pharmacy, University of Mississippi, University, MS 38677, USA
3Department of Pharmaceutics, School of Pharmacy, University of Mississippi, University, MS 38677, USA

Received 25 October 2013; Revised 5 February 2014; Accepted 6 February 2014; Published 23 March 2014

Academic Editor: Yoshiji Ohta

Copyright © 2014 Suman Chandra et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A comparison of the product yield, total phenolics, total flavonoids, and antioxidant properties was done in different leafy vegetables/herbs (basil, chard, parsley, and red kale) and fruit crops (bell pepper, cherry tomatoes, cucumber, and squash) grown in aeroponic growing systems (AG) and in the field (FG). An average increase of about 19%, 8%, 65%, 21%, 53%, 35%, 7%, and 50% in the yield was recorded for basil, chard, red kale, parsley, bell pepper, cherry tomatoes, cucumber, and squash, respectively, when grown in aeroponic systems, compared to that grown in the soil. Antioxidant properties of AG and FG crops were evaluated using 2,2-diphenyl-1-picrylhydrazyl (DDPH) and cellular antioxidant (CAA) assays. In general, the study shows that the plants grown in the aeroponic system had a higher yield and comparable phenolics, flavonoids, and antioxidant properties as compared to those grown in the soil.