Abstract
Accelerated solvent extraction (ASE) of three common Angelica species found in Asia: Angelica sinensis (Oliv.) Diels from China, Angelica acutiloba (Sieb. et Zucc.) Kitagawa from Japan, and Angelica gigas Nakai from Korea was investigated. Preliminary experiments, including the selection of the solvent, extraction time, pressure, static cycle and time were investigated to optimize experimental parameters. Kováts indices and mass spectra were used to identify the components in the various fractions. These were then confirmed using gas chromatography–mass spectrometry (GC–MS). A total of 18 compounds were identified, with qualitative differences and similarities observed among the cultivars. From the 18 compounds found in the ASE extract of danggui cultivars, the major components were decursin, decursinol angelate ( A. gigas); butylidene dihydrophthalide, 4-hydroxy-4-methyl-2-pentanone ( A. sinensis); and 9,12-octadecanoic acid in Angelica acutiloba. The optimum ASE operating conditions were n-hexane as extraction solvent, extraction temperature and pressure of 80 °C and 1500 atm, respectively, static cycle of 2 min, and static time of 10 min. Under these conditions, the percentages of main analytes were increased.
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