Abstract
The purpose of this work is to assess the quality of Siberian fir essential oil samples in accordance with the requirements of GOST ISO 10869-2015, as well as to assess antimicrobial activity. The objects of the study were various industrial samples, as well as a sample obtained at Perm pharmaceutical academy from fir paws, a raw material harvested in the Okhansky district of the Perm Territory. According to the research, all samples meet the requirements for consistency and color; a number of samples have the smell of technical fluid; all samples, except for own sample, have a relative density lower than indicated in GOST; the refractive index is underestimated in several samples; some samples in the composition have components that do not dissolve in ethyl alcohol in the ratio proposed by GOST; all samples comply with GOST in terms of acid number and do not contain ethyl alcohol impurities; a number of samples have unacceptable impurities of fatty and mineral oils. According to the study of the chromatographic profile, all the requirements for the ratio of substances and percentage could be met by an oil sample from Evalar. It should also be noted that own sample contains the largest amount of bornyl acetate. The studied samples have high antibacterial activity against the studied strain of Staphylococcus aureus, low antibacterial activity against the studied strain of Escherichia coli, a number of samples have a moderately pronounced antifungal activity against the studied strain of C. albicans. It is necessary to revise the existing regulatory documentation, as well as more stringent quality control of essential oils sold in the pharmaceutical and perfumery markets.
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