ANTIOXIDANT AND NUTRITIONAL CHARACTERISTICS OF GARDEN CRESS (Lepidium sativum)

Ihsan Gungor Sat

Department of Food Engineering, Ataturk University, 25240, Erzurum, Turkey

Ertan Yildirim

Department of Horticulture, Ataturk University, 25240, Erzurum, Turkey

Metin Turan

Department of Genetic and Bioengineering, Yeditepe University, 34755 Istanbul, Turkey

Muhammed Demirbas

Sebinkarahisar Vocational School, Giresun University, Giresun, Turkey



Abstract

Garden cress (Lepidium sativum), a member of the Brassicaceae family, is an underutilised crop in Europe and Turkey. The dry matter content, crude protein, ascorbic acid, minerals (N, P, K, Ca, Mg, Na, Fe, B, Cu, Na, Zn, Mn), the total phenolic content and the total antioxidant capacity of two garden cress cultivars, Izmir and Dadas, were studied. The results of mineral element analysis of both cultivars revealed that they had a high P, K, Ca, Mg and Na content. Both cultivars studied appeared to have exceptionally high levels of protein when compared with common vegetables. The mean ascorbic acid content of Dadas and Izmir cultivars were 54 and 74 mg 100 g-1 f.w., respectively. The total phenolic content of the garden cress leaves varied from 0.573 (Dadas) to 0.774 (Izmir) mg GAE · g-1 fw and from 6.332 (Dadas) to 7.401 (Izmir) mg GAE · g-1 dw. Antioxidant activities by 2-diphenyl-1-picryhydrazyl (DPPH) free-radical-scavenging assays for EC50 were determined as 330.99 (Dadas) and 346.65 (Izmir) for fw, and 128.08 and 85.97 (Izmir) for dw, respectively. Based on the results of the experiment reported herein, they may serve as a potential dietary source of some mineral and natural phenolic antioxidants. Our results imply garden cress as potential source for alternative dietary supplements of minerals and natural phenolic antioxidants.

Keywords:

variety, antioxidant activity, phenolic content, minerals content

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Published
2013-08-31



Ihsan Gungor Sat 
Department of Food Engineering, Ataturk University, 25240, Erzurum, Turkey
Ertan Yildirim 
Department of Horticulture, Ataturk University, 25240, Erzurum, Turkey
Metin Turan 
Department of Genetic and Bioengineering, Yeditepe University, 34755 Istanbul, Turkey
Muhammed Demirbas 
Sebinkarahisar Vocational School, Giresun University, Giresun, Turkey



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