ASSESSMENT OF HEAVY METAL CONCENTRATION IN VEGETABLES DRIED ALONG FUNTUA-DANJA HIGHWAY KATSINA STATE, NIGERIA
DOI:
https://doi.org/10.33003/fjs-2021-0501-591Keywords:
heavy metals, vegetable, concentration level, AASAbstract
One of the major routes of heavy metal exposure to humans is via the consumption of vegetable. The study assessed the contribution of automobile emission on the concentration levels of heavy metals in some of commonly consumed vegetables in Katsina state, Nigeria using Atomic Absorption Spectrometry (AAS). Fresh and dried samples of five (5) commonly consumed vegetables were obtained from Danja-Funtua highway road, 0.5 g of each sample was measured into a clean dried beaker and 10 ml of acidic mixture of HNO3/HClO4 in ratio 2:1 was added to the sample for digestion. The heavy metals concentration in this study ranges from 0.6 – 75.5mg/kg, 0.31 – 1.2mg/kg 278 – 1470mg/kg, 0.4 – 36.3mg/kg and 28 – 65 mg/kg for Pb, Cd, Fe, Ni and Cu respectively. Levels of heavy metals were all found to be above the acceptable limits indicating that inhabitants are at risk of heavy metal contamination
References
Adeyemi, S.B., Ogundele, K.O. and Animasaun, M.A. (2014). “Influence of Drying Methods on the Proximate and Phytochemical Composition of Moringa oleifera Lamâ€. Global Journal of Medicinal Plant Research Vol 2(1): pp 1-5.
AOAC, Official Methods of Analysis, (1984). 14th Edition, Association of Official Analytical Chemists. Washington DC.
AOAC, Official Methods of Analysis, (1990). 15th Edition, Association of Official Analytical Chemists. Washington DC.
Aniebo A. O. and Owen O. J. (2010). “Effect of Age and Method of Drying on the Proximate Composition of Housefly Larvae Meal (HFLM)â€. Pakistan Journal of Nutrition Vol: 9(5): pp 485 - 487.
Asekun, O. T., Grierson, D. S. and Afolayan, A. J. (2007). “Effects of Drying Methods on the Quality and Quantity of the essential Oil of Mentha longifolia L. subsp. Capensisâ€. Food Chem. 101, pp 995–998.
Braga, A. M. P., Pedroso, M. P., Augusto, F., Silva, M. A. (2009). Volatiles Identification in Pineapple Submitted to Drying in an Ethanolic Atmosphere. Drying Technol. 27, pp 248–257.
Consuelo D. M., Soledad P. C. M., Gonzalez V. M. A., and Dolores C. M. (2003).“Influence of Drying on the Flavour Quality of Spear Mint (Mentha spicata L.)â€. J. Agric. Food Chem. Vol: 51(5), pp 1265-1269.
Deshmukh A. W., Varma M. N., Yoo C. K. and Wasewar K. L. (2014). “Investigation of Solar Drying of Ginger (Zingiber officinale): Empirical Modelling, Drying Characteristics, and Quality Studyâ€. Hindawi Publishing Corporation Chinese Journal of Engineering, Article ID 305823, 7 pages.
Garba Z. N. and Oviosa S. (2019). “The Effect of Different Drying Methods on the Elemental and Nutritional Composition of Vernonia amygdalina (bitter leaf)â€. Journal of Taibah University for Science Vol. 13, No. 1, pp 396–401.
Garti, H., Agbemafle, R., and Ibrahim, A. (2018). “Effects of Shade and Sun Drying on Nutrient Composition of Hibiscus Cannabinusâ€.UDS International Journal of Development [UDSIJD] Volume 5 No. 2, ISSN: pp 2026-5336.
Iscan G., Kirimer N., Kurkcuoglu M., Can Baser K.H. and Demirci F. (2002). “Antimicrobial screening of Mentha piperita essential oilsâ€.Journal of agricultural and food chemistry. 50(14): pp 3943-3946.
Kalaivani K., and Chitra, D. V. (2013). “Mathematical Modeling on Drying of Syzygium Cumini (L.)â€. Int J Agric and Biol Eng, Vol: 6(4): pp 96ï¼103.
Kaya, A., and Aydin, O. (2009). “An Experimental Study on Drying Kinetics of some Mint Leaves. Energ. Convers. Manage. 50, pp 118-124.
Lad P. P, Pachpor N. A, Ghutukade R. D. and Bhagat S. D. (2019). “Analysis of Drying Characteristics of Ginger by different Drying Methodsâ€. Journal of Pharmacognosy and Phytochemistry; Vol: 8(6): pp 1998-2004.
Park, K. J., Vohnikova, Z., and Brod, F. P. R. (2002). “Evaluation of Drying Parameters and Desorption Isotherms of Garden Mint Leaves (Mentha crips L.)â€. J. Food Eng. 51, pp 193-199.
Ratti, C. (2001) “Hot Air and Freeze-Drying of High-Value Foods: a reviewâ€. J. Food Eng. 49, pp 311-319.
Rohloff, J., Dragland, S., Mordal, R., Andiversen, T. H. (2005). “Effect of Harvest Time and Drying Method on Biomass Production, essential Oil Yield, and Quality of mint (Mentha piperita L.)â€. J. Agric. Food Chem. 53(10), pp 4143–4148.
Satyanarayana, A., Giridhar, N., Balaswamy, K., Shivaswamy and Rao D. G. (2001). “Studies on Development of Instant Chutneys from Pudina (Mint, Mentha spicata) and Gongura (Hibiscus sp)â€. J. Food Sci. Technol. 38 (5), pp 512-514.
Shalini, Singh J., Samsher, Chandra S., Kumar V., Chauhan N. and Yadav M. K. (2017). “Effect of Moisture Content and Drying Rate on Dried Aonla Shreds during Ambient Storageâ€. International Journal of Chemical Studies:5(4): pp 362-366.
Shittu, S. K. and Timothy, T. O. (2020). “Study of Drying Characteristics of Baobab (Adansonia digitata L.) Leavesâ€. Bayero Journal of Engineering and Technology (BJET) Vol.15 No.2, pp17-21 ISSN: 2449 – 0539.
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