Laser perturbation two‐dimensional correlation Raman spectroscopy for quality control of bovine colostrum products

Abstract

In this paper, laser perturbation two‐dimensional correlation Raman spectroscopy was explored as a rapid and reliable determination method for the assessment of bovine colostrum products and their analogue, namely, milk powder. Compared with the traditional instrumental analytical methods, such as chromatography, Raman spectroscopy measurements can be realized easily without the need of sample preparation. Two‐dimensional correlation spectroscopy can enhance the spectral resolution and provide more useful information of samples. Laser perturbation technique is a new way, which has been developed in this work; additionally, only few minutes (<5 min) are in demand of the whole experiment process for one sample. Correlation coefficient method was employed to quantitatively analyze the similarities between bovine colostrum products and the other brands of milk powder that include bovine colostrum products containing some milk powder based on the developed two‐dimensional correlation Raman spectroscopy. The results showed that the correlation coefficients between each bovine colostrum product with their mean value could reach 0.991 ± 0.003, which indicated that there were high similarities between these products. Under the same experimental conditions, the correlation coefficients between the bovine colostrum product (mean) and the other brands of milk powder that include bovine colostrum products containing some milk powder were located in the range of 0.596–0.761, far below the 0.991 ± 0.003. Hence, these results clearly demonstrated the utility of the laser perturbation two‐dimensional correlation Raman spectroscopy combined with correlation coefficient as a rapid method for quality control of bovine colostrum products. Copyright © 2017 John Wiley & Sons, Ltd.

Raman chemical feature extraction for quality control of dairy products

“…The Raman spectra of dairy products are shown in Figure 1. The main vibrational bands are assigned as follows according to the previous reports (McGoverin et al, 2010;Almeida et al, 2011;Mazurek et al, 2015;Júnior et al, 2016;Zhang et al, 2017c). The Raman band at 1,752 cm −1 could be attributed to the C=O stretching ester of fatty acids.…”

Recent advances in linear and nonlinear Raman spectroscopy. Part XII

“…Their results showed that the correlation coefficients between each bovine colostrum product with their mean value 0.991 ± 0.003, which indicated that there were high similarities between these products. Under the same experimental conditions the correlation coefficients between the bovine colostrum product (mean) and the other brands of milk powder that include bovine colostrum products containing some milk powder were located in the range of 0.596–0.761, far below the value of 0.991 ± 0.003 …”

“…Under the same experimental conditions the correlation coefficients between the bovine colostrum product (mean) and the other brands of milk powder that include bovine colostrum products containing some milk powder were located in the range of 0.596-0.761, far below the value of 0.991 ± 0.003. [200] 18 | HIGH PRESSURE AND TEMPERATURE STUDIES Capitani et al studied the pressurizing of the mixtures of two ionic liquids to decide between crystallization versus vitrification. They suggest that disorder, induced by the high number of possible configurations for the long alkyl chain in a compressed environment, is a key factor in the suppression of the crystallization process.…”

Rapid Discrimination of Cheese Products Based on Probabilistic Neural Network and Raman Spectroscopy

“…Second, it is recently reported that some "counterfeit" products are all qualified products in fact, which will not cause harm to human body but are illegally used by criminals to pretend to be high-quality products. In this way, illegal profits can be obtained [6].…”