Human Nutrition and Dietetics
Permanent URI for this communityhttps://repository.ui.edu.ng/handle/123456789/380
Browse
Item Amelioration of heavy metals in beverages using eggshell adsorbent: a potential novel approach for improving the quality of beverages(Faculty of Agriculture, University of Port Harcourt, Nigeria, 2021) Okareh, O. T.; Ariyo, O.; Ibobo, A. J.Available methods of eliminating the heavy metal ions from beverages are either unsuitable or costly. This study was aimed to produce a low-cost eggshell adsorbent for the removal of Pb, Cd and Cr in beverages. Five common beverages: Action Bitters (AB), Coca Cola Coke (CCK), Orijin Bitters (OB), Stout (S) and Challot Blue (CB) were sampled and evaluated for adsorbent dosage and contact time. Optimum adsorbent dose of 0.25 g/25 mL and contact time of 90 minutes were obtained. Beverage samples were wet digested and analysed for Pb, Cd, Cr and phytochemical composition using standard methods. Data were analysed using descriptive statistics and t-test at p=0.05. Four beverage samples had high Pb and Cr concentrations. Percentage adsorption (%) of Pb and Cr in AB, CCK, OB, S and CB were (4.67; -217.78), (1.69; 95.53), (9.80; 82.79), (85.37; 95.53), and (0.00; -277.78), respectively. Major phytochemicals in treated and original beverages were flavanoids, cardiac glycosides, anthraquinones, terpenoids, steroids, phenol, alkaloids, tannins and saponins. The saponins level in the untreated beverages (0.0920 g) was significantly higher compared to (0.0370 g) in the treated beverage. Eggshell could be a viable low-cost adsorbent for the amelioration of heavy metals in some beverages.