Antibacterial effects of natural adsorbent prepared from two local Sudanese agricultural waste mango seeds and date's stones and their uses in removal of contamination from fluid nutrient

Abstract

Background: The use of biologically activated carbon (BAC) in drinking water purification is reviewed. Aim: The study was aimed to determine the efficiency of natural adsorbent with antibacterial effects against the strains of E. coli, Shigella spp. and Faecalis bacteria which are found in stimulated water samples. Methods: This was an analytical laboratory based study. The study was carried out at laboratory of Ahfad University for Women at Omdurman in Khartoum state. Two samples of mango seeds and date’s stone were used to carry out these experiments. Mango and date were brought from the local market (Sug El Arabi ). The general process to produce activated carbon is based on carbonizing and activating the carbon aqueous precursor material.  The powder was put in crucible and 1 gram of zinc chloride was added to it. It was incinerated at 350 ⁰C for not less than 3 hours in an oven. It was cooled in a room temperature. Results Activated carbon prepared from mango seeds and date’s stone was found to be very active as antibacterial against E.coli, Shigella and E.faecalis bacteria. The result showed zone of inhibition for each bacteria. The greater zone of inhibition was against E.faecalisdone by both samples. The more effective sample in the three strains was AC from mango seeds. Conclusions: These antibacterial results are good indicators to use natural adsorbent in food processing, sugar purification and food industry.