Welcome to Biomass Chemical Engineering,

Biomass Chemical Engineering ›› 2023, Vol. 57 ›› Issue (4): 47-52.doi: 10.3969/j.issn.1673-5854.2023.04.006

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Effects of Drying Methods on Volatile Components of Rosemary Leaves Based on SPME-GC/MS Method

Pengfei GUO1,2, Aihua ZHANG2,4, Yinghui PENG1, Hong WU2,4, Desheng KANG3, Zhihong XIAO2,4,*()   

  1. 1. College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
    2. State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
    3. Hunan Xiangchun Agricultural Technology Co., Ltd., Changsha 410008, China
    4. Hunan Academy of Forestry, Changsha 410004, China
  • Received:2022-06-01 Online:2023-07-30 Published:2023-07-08
  • Contact: Zhihong XIAO E-mail:xzhh1015@163.com

Abstract:

Headspace solid-phase microextraction combined with gas chromatography-mass spectrometry was used to analyze and identify the volatile components of rosemary leaves and fresh rosemary leaves with five different drying treatments: natural drying, freeze drying, drying at 40, 60 and 80 ℃. The results showed that the main volatile components of dried rosemary leaves included terpinone, 4,6,6-trimethyl-bis[3.1.1] hept-3-ene-2-one, cineole, camphor, linalool, α-pinene, α-terpinol, bornyl acetate, pinocarvone, camphene and caryophyllene. Among them, the GC content of 4,6,6-trimethyl-bis[3.1.1] hept-3-ene-2-one and cineole reached 54.94%-60.09%. The main volatile components of rosemary leaves were alcohols, terpenes, aldehydes, alkanes, benzenes and esters. Freeze drying rosemary leaves had the most volatile components, with 44 identified, accounting for 99.61% of the total volatile substances. By analyzing the differences in the composition and content of volatile substances in rosemary leaves with five different drying methods, it was found that freeze drying could retain volatile components to the greatest extent.

Key words: headspace solid phase microextraction, gas chromatography-mass spectrometry, volatile components, rosemary

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