Daan gene small science: frozen food how to do new crown nucleic acid rapid test
The new crown epidemic has made the new crown nucleic acid rapid test a household name, and more and more people are exposed to the new crown nucleic acid rapid test, we know that for human new crown nucleic acid rapid test sampling is mainly through the nasopharyngeal swab or oropharyngeal swab method. Then how to do the new coronary nucleic acid rapid test for frozen foods?
In fact, the rapid test for human Nucleic acid is similar to the rapid test for food, and next, Daan Gene will provide you with the following information.
The sampling specifications required for this rapid test for Nucleic acid in food.
About the sampling of some object surfaces, mainly the case board, knives, vegetables, meat, etc.. First take a sampling swab, after moistening in the preservation solution (if the object surface is wet, it can be sampled directly), wipe the object surface horizontally and vertically for 5 times each, then put the sampling swab head into the collection tube containing the preservation solution, break the handle, and then seal it for testing.
On the collection of some seafood fish, water samples.
First turn over the gills of fish samples, take a sampling swab, in the gills back and forth 5-10 times, followed by the sampling swab head into the collection tube containing the preservation fluid, break the handle, then sealed for testing; stored fish ice water samples, with disposable plastic pipette to absorb 3-5ml placed in a 5ml preservation tube, then sealed for testing.
It should be noted that the rapid detection of new crown nucleic acid for frozen food should be given priority to the collection of tissues with obvious lesions of organs; secondly, aquatic products should be given priority to take samples with viscera and their surrounding tissues; again, the same animal in order of the sample types listed in the table above, surface smear swabs shall be carried out at the same time. No more than three samples should be collected from the same animal; finally, two copies of each sample should be collected, one for testing and one for backup.
In addition to swabbing the food surface as normal, the tissue also needs to be homogenized (homogenization, also known as homogenization, is to make the dispersion in the suspension (or emulsion) system particulate, homogenization process, this treatment plays a role in both reducing the scale of the dispersion and improve the uniformity of the distribution of the dispersion), and then the normal new crown nucleic acid rapid test operations, namely reagent preparation, nucleic acid extraction, amplification detection The results of this study are summarized below.
At present, most of the domestic sporadic epidemics are caused by cold chain foods, so the rapid detection of new crown nucleic acid for cold chain foods should also be given high priority. To strictly follow the sampling specifications, the possible contamination of food, the environment for serious sampling, mainly for all types of frozen food, food packaging, related supplies and related staff for the rapid detection of new crown nucleic acid sampling work, to do a comprehensive investigation, leaving no dead ends.
