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Sulfite based food additives, which are used in products such as wine and frozen french fries, can cause severe allergic reactions in some individuals.

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How do BHA and BHT preserve freshness in a product such as bread?BHA and BHT are antioxidants and through a chemical interaction they help prevent free radicals from promoting the oxidation of fat in the bread thus preserving the freshness of the product.

A. Since BHA and BHT are antioxidants they can absorb free radicals in the bread and prevent the oxidation of fat in the product thus preserving its freshness.
BHA and BHT are preservatives that have a chemical structure which allows them to 'tie up' metal ions in the bread and prevent the oxidation of fats in the product.
C. BHA and BHT are antioxidants and through a chemical interaction they help prevent free radicals from promoting the oxidation of fat in the bread thus preserving the freshness of the product.

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Nitrates are converted to nitrites in our digestive system.

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Health issues are associated with nitrates/nitrites because they are converted into nitrosamines, which are a known animal carcinogen. What preservative can be used to prevent this conversion?______

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You go to the supermarket to pick up some fruit and vegetables for the week. The display of oranges contains beautiful vibrant coloured fruit but on closer inspection you find that they are stamped with the label "Colour Added". What synthetic food colouring has been added to the skin of the oranges?______

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