A Rapid Screening and Evaluation Method for Pesticide Residues in Tea

Abstract

The invention provides a method for quickly screening and evaluating pesticide residues in tea. Butyric acid bacillus WZ001 is used as a working strain to screen the microbial method of carbamate pesticide residues in tea. Determine whether the residual amount of acephate in the food sample to be tested exceeds the standard according to the size of the inhibition zone on the screening medium. The method provided by the invention for screening carbamate pesticide residues in tea has the characteristics of simple operation, low cost, high sensitivity, and is suitable for sample screening, is superior to the current national standards for rapid screening of pesticide residues, and fully meets the national food safety standards Requirements for the maximum residue limits of pesticides in food, and has a good ability to resist matrix interference, which can effectively avoid the occurrence of false positive results.

Description

technical field

[0001] The invention relates to the detection of pesticide residues in tea, in particular to the biological safety assessment and application of carbamate pesticide residues in tea. Background technique

[0002] Pesticide residues in tea are a food safety issue that the public is very concerned about. The current detection of pesticide residues in my country generally uses instrumental analysis methods, mainly using large-scale instruments such as gas chromatography, liquid chromatography, and gas-liquid chromatography-mass spectrometry. The instruments are expensive and difficult to operate. Personnel must have considerable professional skills, and the detection cycle is long, which is not conducive to popularization in front-line supervision departments. The instrumental analysis method can only detect a single pesticide separately, and cannot fully reflect the biological safety of food. Moreover, the detection time is long, the equipment is expensive, and t...