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Chemistry and Industry of Forest Products ›› 2023, Vol. 43 ›› Issue (5): 63-72.doi: 10.3969/j.issn.0253-2417.2023.05.009

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Difference of Characteristic Components and Bioactivities for Qinan and Traditional Agarwood

Zekun HU1, Tingting YAN1, Gaiyun LI1, Jiahui QIN1, Xinwen WU2, Yuan CHEN1,*()   

  1. 1. Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China
    2. Hainan Nada Agricultural Development Co., Ltd., Danzhou 571724, China
  • Received:2022-06-02 Online:2023-10-28 Published:2023-10-27
  • Contact: Yuan CHEN E-mail:chenyuan@criwi.org.cn

Abstract:

The extracts of Qinan(QN) and traditional agarwood(TA) were prepared by cold extraction(CE) and hot extraction(HE) with water and ethanol as solvent, respectively. The chemical constituents of the extracts were analyzed by GC-MS and HPLC, and their antioxidant and antibacterial activities were studied. The results showed that the species of sesquiterpenoids in QN were less than those of TA, while the contents of sesquiterpenoids in both were higher than that of TA. There was almost no tetrahydro-2-(2-phenylethyl) chromones(THPECs) in QN, and Flidersia type 2-(2-phenylethyl) chromones(FTPECs) was contained, where the mass fraction of 2-(2-phenethyl) chromone could reach 10.87%, and the mass fraction of 2-[2-(4-methoxy)phenethyl]chromone was 4.80%. The species and contents of THPECs in TA were rich, and the mass fraction of agartetrol could reach 1.50%. With the increasing ethanol volume fraction(0-55%), the ABTS free radical scavenging ability and iron ion reduction ability of QN and TA extracts increased. Although the antioxidant activity of QN water extracts was lower than that of TA, while its ethanol extracts were higher than that of TA. QN and TA had no significant antibacterial activity against Escherichia coli, but their water extracts had antibacterial activity against Candida albicans.

Key words: Qinan agarwood, traditional agarwood, chemical constituents, antioxidant activities, antibacterial activities

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