Semi-solid-type nitrite rapid detection tube and method for preparing same

Abstract

The invention discloses a semi-solid-type nitrite rapid detection tube and a method for preparing the semi-solid-type nitrite rapid detection tube. The semi-solid-type nitrite rapid detection tube comprises a detection tube body and a semi-solid agent in the detection tube body, wherein the detection tube body is a small tube or a small resin tube, the semi-solid agent is composed of a semi-solid substance, a color developing agent and a protective agent, the semi-solid substance is made of acid-resistance gel materials, the color developing agent is any nitrite color developing agent which does not interfere in the gel materials, and the protective agent is beta cyclodextrin. The content of nitrite in drinking water and cow milk can be rapidly and accurately detected through the detection tube and the method for preparing the detection tube, the strong shielding and interference effect of the cow milk system on the nitrite detection can be eliminated, and the semi-solid-type nitrite rapid detection tube and the method for preparing the semi-solid-type nitrite rapid detection tube are easy and convenient to operate and free of complex operation steps and instruments.

Description

technical field [0001] The invention belongs to the field of food detection, and in particular relates to a novel nitrite rapid detection tube and a preparation method thereof. Background technique [0002] There are many sources of nitrite in food. First of all, sodium nitrite is often used as a food color protectant, flavor enhancer and preservative in the pickling and smoking of livestock and poultry meat products, aquatic products and vegetables. Secondly, many foods themselves contain a certain amount of nitrate and nitrite, for example, drinking water and vegetables are rich in nitrate and nitrite, among which nitrate is reduced under the action of microorganisms and enzymes during the pickling process of vegetables into nitrite. Some animal foods, such as milk, also contain nitrates and nitrites, which are also mainly related to pasture water and feed. [0003] Nitrite can oxidize the normal hemoglobin in the human body to methemoglobin, and lose the ability to tra...

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Problems solved by technology

[0005] The above quantitative detection methods of nitrite require pre-treatment and professional operators, the equipment used is expensive, and quantitative detection needs to be carried out in a special laboratory

In order to solve the above problems, some rapid detection methods have appeared on the market, such as rapid detection of nitrite test paper, powder, etc., but because milk is an opaque liquid, the system is complex and contains many substances such as fat, protein, sugar, and minerals. , milk has a strong shielding and interference effect on the detection of nitrite, which makes the detection effect unsatisfactory

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