A new method for the determination of cobalt was developed by dispersive liquid-liquid microextraction preconcentration and flame atomic absorption spectrometry. In the proposed approach, 1,5-bis(di-2-pyridyl) methylene thiocarbohydrazide (DPTH) was used as a chelating agent, and chloroform and ethanol were selected as extraction and dispersive solvents. Some factors influencing the extraction ...

The total arsenic content of some Ghana food and cash crops from Kumasi and Obuasi farms and markets was determined. Quantitative analysis of arsenic was also conducted on vegetation, cooked food obtained from some homes, local fish, and meat, as well as some soil and water samples. In all, 266 samples were examined. Values for Kumasi samples ranged from 0.07 to 7.20 mg/kg arsenic, whereas thos...

background toxoplasma gondii is an obligate, intracellular parasite, which is widely spread in the world. the parasite is able to infect all warm-blooded hosts including human.the infection occures via consumption of food or water containing oocytes, eatingundercooked meats containing tissue cysts, and placenta. undercooked meat consumption is one of the most important ways of toxoplasma transm...

background aflatoxins are a group of very toxic compounds produced by a fungal species and are found in food products. aflatoxin m1 (afm1) is a type found in dairy products and resistant to pasteurization. afm1 can adversely affect hepatocytes in human and leading to various liver diseases. thus, it is essential to examine raw milk for the presence of afm1. conclusions according to the results ...

Non-typhoidal salmonellosis is a major cause of food-borne illness in Thailand. Specific serotyping of Salmonellae, linked with certain foods, can be used to identify outbreaks, transmission, and for surveillance. We aimed to identify the chain of non-typhoidal Salmonella transmission from food to humans in five slums, two open markets, four supermarkets and an abattoir in the municipality of K...

Present study was conducted to determine the bacteria and their multi-drug resistance pattern of Velpuri and water of Velpuri shop of different areas of Dhaka city. A total of 74 bacteria were isolated of which 26 isolates were subjected for further study. Eleven and 15 isolates from 26, were found Gram-positive and Gram-negative bacteria, respectively. Three isolates of Gram-positive bacteria ...

BACKGROUND Prevalence of Helicobacter pylori (H. pylori) infection is an increasing problem in developing countries. Several environmental factors such as overcrowding, poverty, contaminated drinking water and food are considered to contribute toward transmission of infection; however, little is known about their definitive roles. The aim of this study is to investigate the presence of H. pylor...