Sulphites are food additives that have antioxidant and preservative properties. However, they are recorded as allergens by the main international regulatory bodies on food safety because of their adverse health effects. Hence, sulphites maximum concentration levels in foodstuff are regulated, and must be ensured by the agro-food processing industries [1]. However, current methods used for sulphite level monitoring in the agro-food industry, such as Monier Williams [2], are not solving the problem of the high quality control standards required to comply with new regulation on food safety and consumer health protection.
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