Quantitative determination of diterpene acids in garden sage leaves

A procedure is developed for the quantitative determination of diterpene acids in garden sage leaves by UV spectrophotometry at the wavelength 285 nm. The target group of compounds was selectively extracted by petroleum ether 40/70. It was shown that the completeness of extraction is determined main...

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Bibliographic Details
Published in:Journal of analytical chemistry (New York, N.Y.) N.Y.), 2017-07, Vol.72 (7), p.810-814
Main Authors: Khaliullina, A. S., Khaziev, R. Sh, Salamatin, A. A.
Format: Article
Language:English
Subjects:
Acids
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Crude oil
Extraction
Food testing
Measurement
Methods
Nutritional aspects
Pasta
Sage
Spectrophotometry
Terpenes
Thanksgiving
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Summary:A procedure is developed for the quantitative determination of diterpene acids in garden sage leaves by UV spectrophotometry at the wavelength 285 nm. The target group of compounds was selectively extracted by petroleum ether 40/70. It was shown that the completeness of extraction is determined mainly by the number of portions of the pure solvent: at the optimum ratio of the mass of the weighed portion to the volume of solvent 1 g/200 mL, double extraction is sufficient. The duration of each extraction is 20 min. The procedure was used in the analysis of samples of garden sage leaves from various producers. It was found that the concentration of diterpene acids in samples varied from 2.1 to 3.6 wt % (in terms of carnosic acid). The error of a single determination of the sum of diterpene acids in garden sage leaves is ±2.38% ( P = 0.95).
ISSN:1061-9348
1608-3199
DOI:10.1134/S1061934817070073