不同干燥方法下西洋参的挥发性成分研究

doi:10.3976/j.issn.1002-4026.2020.03.009

Abstract

Abstract:

The volatile components in Panax quinquefolius L. under heat-drying and freeze-drying conditions were studied using gas chromatography-ion mobility spectrometry. A total of 52 volatile components were identified in Panax quinquefolius L., including 11 kinds of alcohols, 8 kinds of ketones, 12 kinds of aldehydes, 5 kinds of pyrazines, 5 kinds of esters, 4 kinds of acids, and 2 kinds of alkenes, etc.,based on the retention time of gas chromatography and drift time of ion mobility spectrometry. Principal component analysis showed that the volatile components in Panax quinquefolius L. were significantly influenced by the drying methods. In comparison with freeze-dried Panax quinquefolius L., the mass fractions of esters, acids, ketones, alkenes, and pyrazines in heat-dried Panax quinquefolius L. increased, while those of aldehydes and alcohols decreased. The mass fractions of certain esters (ethyl lactate, ethyl propionate, ethyl-2-methylpropionate, and pentyl acetate), acids (2-methylbutanoic acid), ketones (2-pentanone, hydroxyacetone, and pentane-2,3-dione), alkenes (styrene and α-pinene) and pyrazines (2,6-dimethylpyrazine, 2-ethylpyrazine, and 2,5-dimethylpyrazine) in the heat-dried Panax quinquefolius L.significantly increased. Moreover, the mass fractions of aldehydes (octanal, furfural, n-nonanal, heptanal, and (E)-2-heptenal) and alcohols (n-hexanol, (E)-3-hexene-1-ol, and (Z)-3-hexene-1-ol) in the freeze-dried Panax quinquefolius L.significantly increased.

Key words: Panax quinquefolius L., freeze-drying, heat-drying, volatile components, gas chromatography-ion mobility spectrometry

CLC Number:

R932

LI Li-li, ZHANG Min-min, LI Meng, ZHAO Heng-qiang, GENG Yan-ling. Study of the volatile components in Panax quinquefolius L. with different drying methods[J].Shandong Science, 2020, 33(3): 62-67.

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Study of the volatile components in Panax quinquefolius L. with different drying methods

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