Koldaev V.M.
Международный журнал прикладных и фундаментальных исследований 2021; (2): 5-10
The aim of the work was comparative studies of spectrophotometric numerical indicators of the absorbing properties of carotenoids in extracts from plant raw materials. The studies used absorption spectra of alcohol extracts from yellow-orange flower petals of 16 plant species, carrot root crops and lutein solution. The numerical indices of the spectra (NIS) were determined, the coefficients of the relative extinctions of the maxima and absorption intensities, as well as the proportion of the absorption of the carotenoid triad in the total absorption, using the area between the horizontal axis and the spectrogram contour within the abscissa of the inflection points. It was shown that the applied NIS have statistically significant interspecies differences, correlations with the content of carotenoids in plant extracts, and higher validity in comparison with the known traditional spectrophotometric characteristics of carotenoids. Evaluation of plant extracts by NIS of absorption of carotenoids is not laborious and does not require additional reagents, except for the extractant. The presented non-traditional spectrophotometric NIS are advisable to be used in practice as tests in monitoring the state of plant carotenoids, and in controlling the quality of herbal preparations. In terms of carotenoid content, sunflower petals are not inferior to carrots, as well as calendula flower petals, and can serve as sources of raw materials in the production of carotene-containing phytopreparations.
