Distinguish Fritillaria cirrhosa and non-Fritillaria cirrhosa using laser-induced breakdown spectroscopy

Abstract

As traditional Chinese medicines, Fritillaria from different origins are very similar and it is difficult to distinguish them. In this study, the laser-induced breakdown spectroscopy combined with learning vector quantization (LIBS-LVQ) was proposed to distinguish the powdered samples of Fritillaria cirrhosa and non-Fritillaria cirrhosa. We also studied the performance of linear discriminant analysis, and support vector machine on the same data set. Among these three classifiers, LVQ had the highest correct classification rate of 99.17%. The experimental results demonstrated that the LIBS-LVQ model could be used to differentiate the powdered samples of Fritillaria cirrhosa and non-Fritillaria cirrhosa.

Rapid Test for Adulteration of Fritillaria Thunbergii in Fritillaria Cirrhosa by Laser-Induced Breakdown Spectroscopy

“…The experimental setup employed in this study was the same as that used in a previous study [ 3 ]. The adopted Fritillaria cirrhosa and Fritillaria thunbergii powder samples were purchased from Anhui Tong Huatang Chinese Herbal Beverage Technology Co. (Bozhou, China) and Sichuan Haorui Gallium Biotechnology Co. (Chengdu, China).…”

“…The main LIBS setup of our experiments has been shown in the previous work [ 3 ]. A homemade Q-switched Nd: YAG laser (1064 nm, 30 mJ, 1 Hz, 10 ns) is used as the excitation source.…”

“…Fritillaria has high medicinal value because of its ability to moisten the lungs, relieve cough, reduce phlegm, and it can also be consumed as a food [ 1 , 2 ]. Owing to the difference in efficacy and supply and demand, the price of Fritillaria cirrhosa is several times higher than other Fritillaria varieties [ 3 ]. In the market, unscrupulous merchants sometimes mix cheaper Fritillaria powders with Fritillaria cirrhosa powder and attempt to sell them off as pure Fritillaria cirrhosa.…”

Sensing of Soil Organic Matter Using Laser-Induced Breakdown Spectroscopy Coupled with Optimized Self-Adaptive Calibration Strategy

“…Spectroscopic methods have been introduced as rapid, in-situ and accurate alternative approaches for SOM sensing. Laser-induced breakdown spectroscopy (LIBS) is based on the atomic emission, and is a kind of modern spectroscopy technique for rapid soil property measurement, which has been used in quantitative analysis with acceptable measurement results [9][10][11][12][13][14][15][16]. Reliable chemometrics models are indispensable for spectroscopic methods, as they can maximize access to chemical property and spectral information by applying mathematics, statistics and computer science.…”