IJCRR - 6(1), January, 2014
ASSESSMENT OF METAL CONTENT IN LEAFY VEGETABLES SOLD IN MARKETS OF LIBREVILLE, GABON
Author: Roger Ondo Ndong, Armelle Lyvane Ntsame Affane, Hugues Martial Omanda, Philippe Padoue Nziengui, Richard Menye Biyogo, Jean Aubin Ondo, Aime-Jhustelin Abogo Mebale
The rate of urbanization in developing countries imposes to develop standards for efficient food security. This study was conducted in 2013 in Libreville, Gabon to evaluate the metal concentration in three leafy vegetables commonly consumed in West Africa. Amaranthus cruentus (Amaranth), Hibiscus sabdariffa (Roselle) and Manihot esculentus (Cassava) were sampled in seven markets of Libreville (Gabon) and analyzed for their concentration in Al, Ca, Fe, K, Mg and P using ICP-AES. The concentration ranges found were 11-173 mg/kg, 5897-24911 mg/kg, 135-1220 mg/kg, 1531-9728 mg/kg, 1470-7146 mg/kg and 186-1277 mg/kg for Al, Ca, Fe, K, Mg and P, respectively. These results indicated that amongst the leafy vegetables studied, Amaranthus cruentus was the best source of nutrients (Ca, Fe, K, Mg and P). However concerns could be raised for the some high aluminum content found in these leafy vegetables which may be detrimental to human and animal health.
Keywords: leafy vegetables, nutrients, aluminum, daily intake, target hazard quotient.
Roger Ondo Ndong, Armelle Lyvane Ntsame Affane, Hugues Martial Omanda, Philippe Padoue Nziengui, Richard Menye Biyogo, Jean Aubin Ondo, Aime-Jhustelin Abogo Mebale. ASSESSMENT OF METAL CONTENT IN LEAFY VEGETABLES SOLD IN MARKETS OF LIBREVILLE, GABON International Journal of Current Research and Review. 6(1), January, 28-33
1. Akbar JF, Ishaq M, Khan S, Ihsanullah I, Ahmad I, Shakirullah M. A comparative study of human health risks via consumption of food crops grown on wastewater irrigated soil (Peshawar) and relatively clean water irrigated soil (lower Dir). Journal of Hazardous Materials 2010; 179: 612-621.
2. Akpabio UD, Akpakpan AE, Enin GN. Evaluation of Proximate Compositions and Mineral Elements in the Star Apple Peel, Pulp and Seed. Journal of basic and applied scientific research 2012; 2: 4839-4843.
3. Batra J, Seth PK. Effect of iron deficiency on developing rat brain. Indian Journal of Clinical Biochemistry 2002; 17: 108-114.
4. Dimirezen D, Uruc K. Comparative Study of trace elements in certain fish, meat and meat products. Meat Science 2006; 74: 255–260.
5. Horbowicz M, Kowalczyk W, Grzesiuk A, Mitrus J. Uptake of aluminum and basic elements, and accumulation of anthocyanins in seedlings of common buckwheat (Fagopyrum esculentum Moench) as a result increased level of aluminum in nutrient solution. Ecological Chemistry and Engineering 2011; 18: 479- 488.
6. Jakobsen ST. Interaction between Plant Nutrients. IV. Interaction between Calcium and Phosphate. Acta Agriculturae Scandinavica Section B 1993; 43: 6–10.
7. Kawashima LM, Soares LMV. Mineral profile of raw and cooked leafy vegetables edible in Southern Brazil. Journal of Food Composition and Analysis 2003; 16: 605-611.
8. Lokeshappa B, Shivpuri K, Tripathi V, Dikshit AK. Assessment of Toxic Metals in Agricultural Produce. Food and Public Health 2012; 2: 24-29.
9. Morard P, Pujos A, Bernadac A, Bertoni G. Effect of temporary calcium deficiency on tomato growth and mineral nutrition. Journal of Plant Nutrition 1996; 19 : 115–127.
10. Murray RK, Granner DK , Mayes PA, Rodwell VW. Harper’s Biochemistry, 25th Ed. McGraw-Hill, Health Profession Division, USA; 2000.
11. Nardi EP, Evangelist ES, Tormen L, Saint´Pierre TD, Curtius AJ, de Souza SS, Barbosa Jr F. The use of inductively coupled plasma mass spectrometry (ICP-MS) for the determination of toxic and essential elements in different types of food samples. Food Chemistry 2009; 112: 727-732.
12. Ondo JA, Prudent P, Massiani C, MenyeBiyogo R, Domeizel M, Rabier J et al. Impact of urban gardening in an equatorial zone on the soil and metal transfer to vegetables. Journal of the Serbian Chemical Society 2013; 78: 1045–1053.
13. Ondo JA, Prudent P, MenyeBiyogo R, Rabier J, Eba F, Domeizel M. Translocation of metals in two leafy vegetables grown in urban gardens of Ntoum, Gabon. African Journal of Agricultural Research 2012; 7: 5621-5627.
14. Sigman-Grant M, Warland R, Hsieh G. Selected lower-fat foods positively impact nutrient quality in diets of free-living Americans. Journal of the American Dietetic Association 2003; 103: 570–576.
15. Soetan KO, Olaiya CO, Oyewole OE. The importance of mineral elements for humans, domestic animals and plants: A review. African Journal of Food Science 2010; 4: 200- 222.
16. Titchenal CA, Dobbs J. A system to assess the quality of food sources of calcium. Journal of Food Composition and Analysis 2007; 20: 717–724.
17. Vicente AR, Manganaris GA, Sozzi GO, Crisosto CH. Nutritional Quality of Fruits and Vegetables. In, Postharvest Handling: A Systems Approach, Second Edition, Elsevier, Oxford; 2009.