Food and Beverage

All of our processed food undergoes some  electrochemical measurement be it Cheese, Wine, processed meat, butter, cereals and sauces. The most common is pH where we find a wide diversity of pH values. Soft drinks for example may have a pH of less than pH3 whilst bottled water would be pH 7. The pH of meat for example would normally be mildly acidic or neutral with some spices or savoury condiments may have a pH of 2. Food is digested in the stomach by bile acid which would normally have a pH of 1 whereas our skin has an acid mantle at pH 5.5.

Food producers are very keen to control the salt content of food. Preservation and taste are important but so is the need to reduce the sodium content which in excess can cause hypertension. In either case the manufactures will have to measure and report many electrochemical parameters on the labels of processed foods as part of their responsibilities to consumers and legislators.

The meat industry need to measure Nitrate, Nitrite and Ammonium to provide consistent quality and freshness whilst  wine producers will want to control and check the Potassium levels to minimise sedimentation and optimise taste.  The legislative requirement to report levels of these parameters is growing and so is the use of pH, Conductivity and ISE techniques to meet these challenges.

EDT directION have prepared a selection of common methods used in the Food industry  and these are available for immediate download.  The methods include a section on sample preparation and contain practical hints and tips to enable the user to achieve a good result with the minimum of fuss.

Chloride in Mayonnaise

The chloride is extracted from the sample by dissolving in 1 Molar nitric acid which also acts as an ionic strength adjustment buffer.

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Chloride in Milk

A rapid and simple method for the detection of abnormal milk samples using an EDT directION Chloride ISE

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This is a method for the determination of potassium levels in fruit juices such as blackcurrant, orange, lemon, grape, etc. This method is also suitable for the determination of potassium in wine.

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A rapid low cost way to determine ION concentration

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The Determination of Calcium in Beer

The concentration of Calcium in Beer is determined directly by using the technique of standard addition.

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