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PROJECT TOPIC: EVALUATION OF SOME HEAVY METALS CONCENTRATE IN CHOCOLATE, CANDIES AND TOMATO PURE

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CHAPTER ONE

1.0 INTRODUCTION

1.1   BACKGROUND

 Recently, there is an increasing concern about the quality of imported foods and food related products in several parts of the world (Maxwell and Neumann, 2009) particularly from China. This, as observed by the United States Congress, was due to the large size of shipments, the many different routes of entry, the variety of foods imported, and the large numbers of potential contaminants make effective interdiction of contaminated foods difficult (Congress Research Service (CRS) Report, 2008). Additionally, the US Congress observed that many products were brought into the United States by travelers especially residents travelling back and forth regularly to China. Among the common products imported were canned tomatoes, chocolates, candies, biscuits, bean paste, bean curd, teas and various nuts and spices (CRS Report, 2008).

According to the United States Congress Research Service Report (2008), in early 2007, evidence emerged that adulterated pet food ingredients from China had caused the deaths of many dogs and cats. However, toxicological and environmental studies have interest in the determinations of toxic elements in food. "Food safety" implies absence or acceptable and safe levels of contaminants, adulterants, naturally occurring toxins or any other substance that may make food injurious to health on an acute or chronic basis. Food quality can be considered as a complex characteristic of food that determines its value or acceptability to consumers. Besides safety, quality attributes includes nutritional value, organoleptic properties such as appearance, color, texture, taste and functional properties (World Health Organization (WHO), 1998).


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