Introduction - Introduction. Soft drinks are one of the...

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Introduction. Soft drinks are one of the most recognised industries throughout the world. Soft drinks have been used for decades as a way to deter fatigue and tiredness, but also drunk all over the world. Many different soft drinks today are made up of similar ingredients, differing only to the acquired taste of different branding and secret preparation methods. Soft drinks are a very complex mixture of carbonated water, sugars and caffeine. The sugars within soft drinks are divided into two different types, being natural and processed sugar types. Corn syrup is a natural sugar used to add sweetness and reduce cost, whilst artificial sweeteners such as aspartame and saccharin are used to control the total calories of the soft drink. Acids such as benzoic acid are also used to add flavour and “bite” to the soft drink. All of these ingredients are used in conjunction with caffeine, a high energy component, to produce these beloved soft drinks. With the increased consumption of sugary soft drinks, significant health risks have evolved over the years. One example is the increase in tooth decay, which has become a major health risk and massive drain on government funding. The high levels of sugar and the acidic nature of the drinks destroy the enamel protecting the tooth. Similarly the consumption of soft drinks contribute massively to the health issues associated with obesity. High sugar content and over consumption in addition to poor diets and lack of exercise again are having dramatic affects on people’s health and well being. From the over consumption of soft drinks such problems as caffeine dependence evolve. This problem develops a dependence on the caffeiene of soft drinks that sometime require the consumption upwards of 5 litres of soft drink per day to manage their addiction. This type of addiction then develops other problems already mentioned creating a cycle of health issues. Soft drinks have also been linked to children’s bones being weakened through the addition of phosphorus in soft drinks depleting calcium levels in bones. Liquid chromatography (LC) is a separation technique that has been used for many years to separate differently sized molecules in solution. In this chromatography technique the mobile phase is set as a liquid to encourage flow and separation. LC can be further enhanced through another technique called high performance liquid chromatography (HPLC). HPLC is a technique where the sample is forced through a column that is tightly packed with irregular shaped particles, which is then delivered through the stationary phase and mobile phase. This is done through extremely high pressures, upwards of 150 atmospheres, and based on the polarity of the solutions being tested. HPLC coupled with UV visible spectrophotometry is another method used involving the
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This note was uploaded on 04/03/2011 for the course CHEM 101 taught by Professor Jamie during the Three '11 term at Macquarie.

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Introduction - Introduction. Soft drinks are one of the...

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