Comparative Analysis of the Volatile Components Extracted from Dried Kumaiti Apricots by Different Methods
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Abstract:
In order to compare the effects of different extraction methods on the volatile components of dried Kumaiti apricots, and then develop a more suitable method for the analysis of these volatile components, gas chromatography-mass spectrometry combined with retention index evaluation was used to separate and identify the extracted volatile components. The outcomes of simultaneous distillation extraction (SDE) with two different solvents and headspace solid phase microextraction (HS-SPME) to extract volatile components from dried apricots were compared. The results showed that the volatile components extracted from the dried apricots by the two methods were significantly different. A total of 46 volatile components were extracted by the two methods, with 6 common components. Among them, 24 volatile components were detected by HS-SPME, mainly including 7 alcohols, 5 ketones and 6 esters; the main compounds were linalool (5.22%), α-terpineol (10.48%), geraniol (2.55%), geranylacetone (3.05%), β-ionone (18.8%), geranyl acetate (2.95%), dihydro kiwi lactone (17.7%), and dibutyl phthalate (3.77%). SDE (with dichloromethane) detected 25 volatile components, including 7 alcohols, 6 esters, and 5 alkanes, with the main compounds as linalool (9.87%), terpineol (9.71%), phytol (2.34%), β-ionone (6.55%), dibutyl phthalate (4.04%), butylated hydroxytoluene (5.46%), tetracosane (2.15%), and hexadecane (3.75%) . Eighteen volatile components were detected by SDE (with diethyl ether and n-pentane), mainly including 3 alcohols, 3 ketones, 3 esters (and 5 alkanes, with the main compounds as linalool (3.48%), terpineol (3.74%), and diisooctyl phthalate (3.67%). The HS-SPME and SDE methods had their own advantages and disadvantages. The combined use of the two methods provide a more comprehensive and accurate analysis of the volatile components of dried apricots.
