Test paper slip for testing adulterated milk rapidly

Abstract

The invention discloses a test paper slip for testing adulterated milk rapidly. The test paper slip is characterized in that a starch test paper slip for composing the test paper slip is produced by the steps of taking 10 ml of an iodine-potassium iodide solution with an I2 concentration of 0.032 mol / mL and a KI concentration of 0.126 mol / mL, diluting it with equal amount of a solvent, immersing completely quantitative test paper into the diluted iodine-potassium iodide solution for 5 minutes, airing the test paper obtained from the previous step at a temperature of 5 to 6 DEG C in darkness, clipping, and preserving it in a dark place; a carbamide test paper slip for composing the test paper slip is produced by the steps of taking 6 ml of a sodium nitrite hydrochloric acid solution with a sodium nitrite content of 0.04%, adding 0.4 g of a Griess reagent into the sodium nitrite hydrochloric acid solution, mixing well, immersing completely quantitative test paper into the mixture for 10 minutes, taking out the immersed test paper, airing it in the shade, clipping, and preserving it in a dark place; an edible alkali test paper slip for composing the test paper slip is produced by the steps of taking 10 ml of a prepared Bromothymol Blue ethanol indicator with a Bromothymol Blue content of 0.04%, placing the indicator on a disk, immersing completely quantitative test paper into the indicator for 10 to 15 minutes, taking out it, airing it, clipping, and preserving it in a dry place; and a salt test paper slip for composing the test paper slip is produced by the steps of mixing well 15 ml of a silver nitrate solution with a silver nitrate concentration of 0.01 mol / mL and six drops of a potassium chromate solution with a potassium chromate content of 10% quickly, immersing completely quantitative test paper into the mixture for about 20 minutes, taking out it, airing the immersed test paper, clipping, and preserving it in a dry place. The test paper slip provided by the invention can carry out an on-site test on raw milk, has a high sensitivity of test and can produce an accurate test result.

Description

technical field [0001] The invention relates to the field of food detection, in particular to a test strip for rapid detection of adulterated milk. Background technique [0002] At present, my country's food safety issues are becoming increasingly prominent, and the adulteration of dairy products has attracted much attention. The milk sources of most milk manufacturers in my country are distributed to households, so how to control and inspect the quality of raw milk has become the most critical link for milk manufacturers to ensure the quality of their products. [0003] Food adulteration refers to the human behavior of illegally mixing non-identical substances with similar appearance, physical properties or shapes into food. According to the survey, the main ways of adulteration and adulteration in food are to mix foreign matter into food, that is, to mix non-inherent substances into normal food to increase the content of inherent substances in the original food; Genuine ...

AI Technical Summary

Problems solved by technology

[0011] Although the above methods can effectively detect whether milk contains adulterated substances, none of them can be used to measure the raw milk at the milk station purchase site or farm, and some operation steps are more complicated and costly, so it is difficult to realize the raw material. Field testing of milk

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