Determination of Proximate Composition, Ascorbic Acid and Heavy Metal Content of African Walnut (Tetracarpidium conophorum)


	Pakistan Journal of Nutrition
	Year: 2009 \| Volume: 8 \| Issue: 3 \| Page No.: 225-226 DOI: 10.3923/pjn.2009.225.226

Determination of Proximate Composition, Ascorbic Acid and Heavy Metal Content of African Walnut (Tetracarpidium conophorum)

Edem , Christopher A. Dosunmu, Miranda I. and Bassey Francesca I.

Abstract: The proximate composition, ascorbic acid and heavy metal content of (African walnut) Tetracarpidium conophorum were evaluated using chemical analysis. The result of the proximate composition showed the following; moisture (48.70%), carbohydrate (53.20%), crude protein (35.22%), crude fat (6.21%), crude fiber (3.34%) and ash (2.03%).It also contained 53.50mg/100ml of ascorbic acid. The heavy metal concentrations in the fruit is Fe (0.064ppm), Mn (0.012ppm), Cr (0.001ppm), Ni (0.005ppm) while the concentrations of Hg, Pb and Cd were not detected. The results revealed that the T. conophorum is rich in ascorbic acid and carbohydrate with moderate valves of crude protein while the ash content was shown to be very low. This result shows that T. conophorum nut is not polluted with heavy metals since the concentrations of the heavy metals were all below WHO permissible limits. This nut is therefore shown to be safe for public consumption.

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How to cite this article:

Edem , Christopher A. Dosunmu, Miranda I. and Bassey Francesca I., 2009. Determination of Proximate Composition, Ascorbic Acid and Heavy Metal Content of African Walnut (Tetracarpidium conophorum). Pakistan Journal of Nutrition, 8: 225-226.

DOI: 10.3923/pjn.2009.225.226

URL: https://scialert.net/abstract/?doi=pjn.2009.225.226

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