A rapid detection method for bromate in bread

Abstract

The invention relates to a fast detection method of bromate in bread. The fast detection method comprises the following steps of: (1) preparing liquid A and liquid B, wherein the liquid A is a hydrochloric acid solution and the liquid B is a 1% of potassium iodide solution; (2) mixing the liquid A and the liquid B with equal volumes, putting the mixture into a test tube and adding a crushed bread sample; and (3) observing the color after 1-2 minutes, and if the light purple or purple or purple blue exists, showing that the potassium bromate exists. The fast detection method has the advantages that the cost is low, the operation is convenient, the sample detection can be finished for 10 minutes, and the quantitation is fast and accurate; and the applicability to site and fast detection is achieved, the anti-counterfeiting purpose on site and a home test of consumers are met to ensure the safety and the reassurance of foods, and an effective and fast monitoring means is provided for market supervision. The fast detection method has important practical significance on the aspects of facilitating the effective supervision on the quality of a bread product, protecting the benefit of the consumers and the like.

Description

technical field [0001] The invention belongs to the technical field of bromate detection, in particular to a rapid detection method for bromate in bread. Background technique [0002] The widespread use of potassium bromate as an additive in baked bread began in 1941. It acts as a slow oxidant during dough fermentation, proofing, and baking, affecting the structure and rheology of dough. Potassium bromate reacts with the gluten tissue of wheat protein , increase the strength and elasticity of gluten, form a good gluten network, thereby significantly improving the baking effect of flour. In 1992, the World Health Organization published a review report on the safety of potassium bromate, confirming that bromate is an oxidative carcinogen, which can mainly cause cancer in the kidney and bladder tissues of animals. my country's Ministry of Health on June 20, 2005 issued the No. 9 announcement saying that from July 1, 2005, my country banned the use of potassium bromate in an al...

AI Technical Summary

Problems solved by technology

In 2006, GB / T 20188-2006 "Determination of Bromate in Wheat Flour - Ion Chromatography" was promulgated. This standard stipulates the detection method of bromate in wheat flour, but does not specify the detection method of bromate in bread.

[0003] Existing detection methods for determining bromate include ion chromatography, capillary electrophoresis-modified electrode electrochemical detection method, gas chromatography, post-column derivatization-ion chromatography , Ion Chromatography-Mass Spectrometry, Ion Chromatography Inductively Coupled Plasma-Mass Spectrometry, these instrumental methods require complex sample pretreatment to detect the content of bromate, the inspection efficiency is low, and must be carried out in a large-scale inspection institution with capabilities Can only be inspected, let alone go to enterprises and markets for on-site inspections

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