Nutritional composition, vitamins, minerals and toxic heavy metals analysis of Trianthema portulacastrum L., a wild edible plant from Peshawar, Khyber Pakhtunkhwa, Pakistan

  • Naeem Khan
  • Alia Sultana
  • Naima Tahir
  • Nargis Jamila

Abstract

This study aimed at analyzing the nutritional potential of a wild edible plant, Trianthema portulacastrum L. widely used in Peshawar, Khyber Pakhtunkhwa, Pakistan. The nutritional composition, vitamins, minerals and heavy elements were analyzed following the standard methods of Association of Official Analytical Chemists (AOAC). The nutritional assessment included determination of moisture, ash, lipid, fiber, protein, carbohydrate and energy. Among the nutrient values, fiber was found to be the highest (430.0 mg/g), followed by ash (348.0 mg/g), total protein (91.9 mg/g), moisture (80.0 mg/g), carbohydrate (30.2 mg/g) and total lipid (20.0 mg/g). The vitamins analyzed were found to have greater value for riboflavin (2.02 mg/g), than retinol (0.81 mg/g). Among the macro minerals, potassium was present in high concentration (51.6 mg/g) than sodium (44.0 mg/g). The trace elements were assessed using atomic absorption spectrophotometer (AAS) and their decreasing order was Fe>Zn>Mn>Ni>Cu. Two toxic metals, Pb and Cd were present in very minute quantities of 0.08 and 0.0006 mg/g, respectively. The results suggest that T. portulacastrum L. is a good source of fiber, proteins, riboflavin, potassium, sodium and iron.

Keywords: Peshawar, Association of Official Analytical Chemists (AOAC), Trianthema portulacastrum L., nutritional composition, vitamins, minerals.

African Journal of Biotechnology Vol. 12(42), pp. 6079-6085

Author Biographies

Naeem Khan
Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Khyber Pakhtunkhwa, Pakistan; Department of Food and Nutrition, Chosun University, Gwangju 501-759, Republic of Korea.
Alia Sultana
Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Khyber Pakhtunkhwa, Pakistan.
Naima Tahir
Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Khyber Pakhtunkhwa, Pakistan.
Nargis Jamila
Department of Chemistry, Kohat University of Science and Technology, Kohat 26000, Khyber Pakhtunkhwa, Pakistan; School of Chemical Sciences, Universiti Sains Malaysia, Penang, 11800, Malaysia.
Published
2016-06-06
Section
Articles

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eISSN: 1684-5315