A kind of infrared spectrum detection method of bird's nest

Abstract

The invention discloses an infrared spectrum detection method of bird's nest. It is characterized in that infrared spectrum detection is adopted, and the steps are pre-processing the samples to be identified; setting technical parameters, collecting infrared spectra of samples through infrared spectrometer; judging whether the bird's nest is adulterated by calculating 1634? The peak height of the absorption peak near cm-1 is 1037? The ratio of the peak height of the absorption peak near cm-1; if the ratio is between 0.90 and 1.30, it is genuine bird’s nest; if it is outside this range, the sample is adulterated, and the farther away from the interval, the lower the content of genuine bird’s nest; 1730? cm-1 absorption peak, the sample may be mixed with oily compounds such as pigskin. The invention measures the total extract in the bird’s nest, the pretreatment method is simple, non-toxic, the detection speed is fast, the detection cost is low, and the uniformity of sample detection is maintained at the same time; it is suitable for large batches of bird’s nest samples from different sources, and the infrared spectrum has a good reproducible and highly specific.

Description

technical field [0001] The invention relates to the identification field of bird's nest, in particular to an infrared spectrum detection method of bird's nest. Background technique [0002] Infrared spectroscopy (Infrared Spectroscopy, IR) research began in the early 20th century. Since the advent of commercial infrared spectrometers in 1940, infrared spectroscopy has been widely used in organic chemistry research. Especially with the rapid development of computer technology, it has driven the digitalization of analytical instruments and the development of chemometrics. Chemometric methods have achieved good results in solving spectral information extraction and background interference. The unique characteristics make people pay more attention to the value of near-infrared spectroscopy. The application research of near-infrared spectroscopy in various fields has been carried out one after another. Noteworthy as an independent analysis technique. [0003] In organic molecul...

AI Technical Summary

Problems solved by technology

However, the problems of this method are: 1. The KBr method is easily affected by the environment, and the operation is cumbersome during detection, so it is not suitable for large-scale detection; 2. The integrity and uniformity of the bird’s nest will be destroyed during sampling, which may cause uneven sampling of the bird’s nest Cause misjudgment; 3. There are differences in the peak position, peak shape and peak height of the characteristic peaks of bird's nests from different origins, which may cause misjudgment

Images