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Peer-reviewedCC BY 4.0Frontiers in Pharmacology

A comparative analysis of the effect of different drying treatments on the volatile organic compounds of polygonati odorati rhizoma

  • Haili Tang1,2
  • Shijia Zhang2
  • Ziran Yu2
  • Qiuye Liu1,2
  • Yajie Zuo1,2
  1. 1The First Hospital of Hunan University of Chinese Medicine, Hunan University of Chinese Medicine
  2. 2Academy of Chinese Medical Sciences, Hunan University of Chinese Medicine
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Abstract

Introduction: Polygonati Odorati Rhizoma (POR) is a widely recognized functional food, volatile organic compounds (VOCs) as one of their main active metabolites. Drying is a crucial link in the front-end of the product production chain. There have been no comparison investigations on the effects of different drying methods on the VOCs of POR.

Methods: Gas chromatography-ion mobility spectrometry (GC-IMS) was utilized to detect and analyze the VOCs of POR samples treated with vacuum freeze-drying (VFD), vacuum drying (VD), sun drying (SD), hot-air drying (HAD), and microwave drying (MD). Analytical methods including Principal Component Analysis (PCA), Cluster Analysis (CA), and Partial Least-Squares Discriminant Analysis (PLS-DA) were used.

Results: A total of 56 VOCs were detected. Principal component analysis (PCA), cluster analysis (CA), and partial least-squares discriminant analysis (PLS-DA), consistently showed that the VOCs of VFD- and MD-treated samples were the closest to those of SD samples, whereas VD and HAD differed more markedly. Representative drying-specific markers tentatively identified as (E)-2-heptenal and ethyl hexanoate in SD, 2,5-dimethyl thiophene in HAD, (E)-2-butenal in MD, 2-butanol in VD, and 3-methyl-3-buten-1-ol in VFD were observed.

Conclusions: These results indicate that different drying methods significantly affect the VOC profile of POR. VFD and MD are promising for VOC retention.

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Cite

BibTeXRIS
BibTeX
@article{tang2026comparative,
  title = {{A comparative analysis of the effect of different drying treatments on the volatile organic compounds of polygonati odorati rhizoma}},
  author = {Haili Tang and Shijia Zhang and Ziran Yu and Qiuye Liu and Yajie Zuo},
  journal = {Frontiers in Pharmacology},
  year = {2026},
  month = oct,
  doi = {10.3389/fphar.2026.1965242},
  url = {https://www.frontiersin.org/articles/10.3389/fphar.2026.1965242/full},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - A comparative analysis of the effect of different drying treatments on the volatile organic compounds of polygonati odorati rhizoma
AU  - Haili Tang
AU  - Shijia Zhang
AU  - Ziran Yu
AU  - Qiuye Liu
AU  - Yajie Zuo
PY  - 2026
DA  - 2026/10/15
JO  - Frontiers in Pharmacology
DO  - 10.3389/fphar.2026.1965242
UR  - https://www.frontiersin.org/articles/10.3389/fphar.2026.1965242/full
AB  - Introduction: Polygonati Odorati Rhizoma (POR) is a widely recognized functional food, volatile organic compounds (VOCs) as one of their main active metabolites. Drying is a crucial link in the front-end of the product production chain. There have been no comparison investigations on the effects of different drying methods on the VOCs of POR.  Methods: Gas chromatography-ion mobility spectrometry (GC-IMS) was utilized to detect and analyze the VOCs of POR samples treated with vacuum freeze-drying (VFD), vacuum drying (VD), sun drying (SD), hot-air drying (HAD), and microwave drying (MD). Analytical methods including Principal Component Analysis (PCA), Cluster Analysis (CA), and Partial Least-Squares Discriminant Analysis (PLS-DA) were used.  Results: A total of 56 VOCs were detected. Principal component analysis (PCA), cluster analysis (CA), and partial least-squares discriminant analysis (PLS-DA), consistently showed that the VOCs of VFD- and MD-treated samples were the closest to those of SD samples, whereas VD and HAD differed more markedly. Representative drying-specific markers tentatively identified as (E)-2-heptenal and ethyl hexanoate in SD, 2,5-dimethyl thiophene in HAD, (E)-2-butenal in MD, 2-butanol in VD, and 3-methyl-3-buten-1-ol in VFD were observed.  Conclusions: These results indicate that different drying methods significantly affect the VOC profile of POR. VFD and MD are promising for VOC retention.
SN  - 1663-9812
ER  -