African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6578

Full Length Research Paper

Nutritional value and economic feasibility of red beetroot (Beta vulgaris L. ssp. vulgaris Rote Kugel) from different production systems

  Sasa Straus1,2*, Franc Bavec2, Matjaz Turinek2, Ana Slatnar3, Crtomir Rozman4 and Martina Bavec2        
  1Panvita d.d. Lendavska 5, Rakičan, 9000 Murska Sobota, Slovenia. 2Faculty of Agriculture and Life Sciences, Institute for Organic Farming, University of Maribor, Hoce, Slovenia. 3Department of Agronomy, Biotechnical Faculty, Chair for Fruit, Wine and Vegetable Growth, University of Ljubljana, Ljubljana, Slovenia. 4Department of Agricultural Economics, Faculty of Agriculture and Life Sciences, University of Maribor, Hoce, Slovenia.
Email: [email protected]

  •  Accepted: 29 September 2012
  •  Published: 30 November 2012

Abstract

 

The study determined the internal quality (the total phenol, sugar, organic acid contents, antioxidant activity, and mineral components) and physical parameters in the flesh of red beetroots produced in different production systems (conventional, integrated, organic, and control) using established methods. Organic cropping of red beetroot plants significantly reduced the yield by 27% of some macro minerals (P at 23.1, K at 13.1, and Mg at 7.7%) in comparison with conventional cropping but increased the ascorbic acid by 23.3%, antioxidant activity by 30.3%, and some micro minerals (Na at 39.1, Cu at 5.0, Fe at 17.9, Mn at 3.4, and Zn at 2.1%). The organic system can also result in better economic feasibility under assumption that price and expected yield are achieved. The results showed that a decrease in nitrogen supply, which is inherent in organic cropping, enhances the levels of secondary metabolites and micro minerals, which are associated with increased free radical scavengers and antioxidant activity in plant tissue.

 

Key words: Phenol, sugar, organic acid, antioxidant activity, minerals, economic feasibility.