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Evaluation of the nutritional value of selected leafy vegetables grown in Sri Lanka

Authors:

H. Nadeeshani,

University of Peradeniya, LK
About H.
Postgraduate Institute of Agriculture
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K. M. S. Wimalasiri,

University of Peradeniya, LK
About K. M. S.
Department of Food Science and Technology, Faculty of Agriculture
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G. Samarasinghe,

Plant Genetic Resource Centre, Gannoruwa, LK
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R. Silva,

Wayamba University of Sri Lanka, LK
About R.
Department of Applied Nutrition, Faculty of Livestock, Fisheries and Nutrition
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T. Madhujith

University of Peradeniya, LK
About T.
Department of Food Science and Technology, Faculty of Agriculture
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Abstract

Sri Lanka is blessed with a wide variety of leafy vegetables. However, the information on their nutritional value is scanty. In the present study, ten leafy vegetables commonly grown in Sri Lanka, namely Centella asiatica (Gotukola), Alternanthera sessilis (Weda Mukunuwenna), Alternanther asessilis (Common Mukunuwenna), Sesbania grandiflora (Kathurumurunga), Amaranthus viridis (Red thampala), Amaranthus viridis (Green Thampala), Dregea volubilis (Aguna kola), Coccinia grandis (Kowakka), Costus speciosus (Thebu kola) and Trianthema portulacastrum (Sarana) were evaluated for their nutritional composition. Samples of each vegetable species were collected from different geographical locations of the country representing all agro-climatic zones. Healthy, undamaged plant parts were collected, cleaned and air dried at 45 °C, pooled in similar quantities and stored at 4 °C for further analysis. The proximate and mineral composition of each sample were determined and presented on fresh weight basis. Moisture, ash, crude fat, crude protein and total carbohydrate contents were determined using AOAC standard methods. The moisture content ranged between 76.99 and 89.55% while the crude protein content ranged between 1.73 and 7.17%. The corresponding ranges for ash, total carbohydrates and crude fat were 1.28 – 3.86%, 4.41 – 10.76% and 0.29 – 1.81%, respectively. Comparatively, A. viridis was found to be the richest (P<0.05) source of essential mineral elements.

How to Cite: Nadeeshani, H., Wimalasiri, K.M.S., Samarasinghe, G., Silva, R. and Madhujith, T., 2018. Evaluation of the nutritional value of selected leafy vegetables grown in Sri Lanka. Tropical Agricultural Research, 29(3), pp.255–267. DOI: http://doi.org/10.4038/tar.v29i3.8265
Published on 28 Jun 2018.
Peer Reviewed

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