Journal of Dali University ›› 2025, Vol. 10 ›› Issue (8): 1-10.DOI: 10. 3969 / j. issn. 2096-2266. 2025. 08. 001

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Changes in Color and Chemical Components during the Aging Process of Artemisia argyi Leaves

Yang Dandan1, Huang Haozhou2, 3, Bao Xiaoming4, Yang Ming1, Zhang Dingkun2, 3*   

  1. (1. Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Jiangxi University of Traditional Chinese Medicine,
    Nanchang 330004, China; 2. Pharmacy School, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China;
    3. State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine,
    Chengdu 611137, China; 4. Shimadzu Enterprise Managemen(t China) Co., Ltd., Chengdu 610023, China)
  • Received:2025-02-07 Revised:2025-02-27 Online:2025-08-15 Published:2025-09-06

Abstract: Objective: To investigate the dynamic changes in color, volatile and non-volatile components of Artemisia argyi leaves
during natural aging, and clarify the mechanism of chemical component transformation, providing a scientific basis for quality
evaluation and optimization of the aging process. Methods: A. argyi leaves of different aging years were used as the research object.
The color change was characterized by measuring the color parameters using a colorimeter. The volatile oil of A. argyi leaves was
extracted by steam distillation and the yield was calculated.Gas chromatogram-mass spectrometry (GC-MS) combined with orthogonal
partial least squares discriminant analysis (OPLS-DA) was applied to analyze the composition and differences of volatile components.
High-performance liquid chromatography (HPLC) was used to quantify five non-volatile components, including neochlorogenic acid
and chlorogenic acid. Results: With the prolongation of aging time, the color of A. argyi leaves gradually shifted from green to
yellowish-brown, and the volatile oil yield significantly decreased. GC-MS identified 92 volatile components, among which alkenes
and alcohols were the major components. OPLS-DA screened out 20 differential components, with contents of borneol, methyl eugenol,
p-cymen-8-ol, dihydrocarvone, and α-thujone increasing significantly. For non-volatile components, phenolic acids degraded faster
than flavonoids. Conclusion: The aging of A. argyi leaves is driven by the synergistic effects of volatile component transformation, nonvolatile
component degradation, and physicochemical changes. The formation of compounds like borneol reveals the complexity of
chemical conversion, while color changes serve as a visual indicator of aging progression. These findings provide a scientific basis for
establishing a quality evaluation system and optimizing the aging process, and offer a modern scientific interpretation of the traditional
concept "the longer the aging, the better the efficacy".

Key words: Artemisia argyi leaves, aging, volatile oil, chemical components, color change

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