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Antioxidants
Volume 14
Issue 9
10.3390/antiox14091109
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

The Role of Inulin in Maintaining Antioxidant Capacity and Enzymatic Activities of Jerusalem Artichoke (Helianthus tuberosus L.) Cultivars During Cold Storage

by
Yuwen Mu
1,2,3,
Bohua Zhang
4,
Shiqi Lv
2,3,
Fencan Li
2,3 and
Changming Zhao
2,3,*
1
Agricultural Product Storage and Processing Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
2
State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China
3
Yuzhong Mountain Ecosystems Observation and Research Station, Lanzhou University, Lanzhou 730000, China
4
Jinan Fruit Research Institute, All China Federation of Supply & Marketing Co-Operatives, Jinan 250014, China
*
Author to whom correspondence should be addressed.
Antioxidants 2025, 14(9), 1109; https://doi.org/10.3390/antiox14091109
Submission received: 25 July 2025 / Revised: 8 September 2025 / Accepted: 11 September 2025 / Published: 12 September 2025
(This article belongs to the Special Issue Food Proteins and Peptides as Antioxidants: Resource, Extraction, Functional Property and Application)
Versions Notes

Abstract

Jerusalem artichoke (Helianthus tuberosus L.) is valued for its high inulin content and adaptability to marginal lands. This study investigated the changes in inulin content, antioxidant capacity, polyphenol concentrations, and enzymatic activities of eight cultivars during 60 days of cold storage. Inulin levels ranged from 582.43 g/kg (LZJ006) to 809.70 g/kg (LZJ055), with LZJ047 maintaining the highest content throughout storage. The antioxidant potential, as measured by ferric reducing antioxidant power (FRAP) and 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, declined across all cultivars, correlating with the reduction in inulin content. The polyphenol content varied significantly, with LZJ119 having 2.17 times more than LZJ010. POD activity increased, while catalase (CAT) and superoxide dismutase (SOD) activities fluctuated during the storage period. Hierarchical Cluster Analysis identified three distinct antioxidant clusters, revealing significant correlations between inulin content and key antioxidant parameters (CAT, FRAP, DPPH). These findings highlight the pivotal role of inulin in preserving the antioxidant system and bioactive properties of Jerusalem artichoke tubers during extended cold storage, providing valuable insights for post-harvest management and cultivar selection.
Keywords: Jerusalem artichoke; inulin; polyphenol; antioxidant capacity; enzyme activities; cold storage Jerusalem artichoke; inulin; polyphenol; antioxidant capacity; enzyme activities; cold storage

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MDPI and ACS Style

Mu, Y.; Zhang, B.; Lv, S.; Li, F.; Zhao, C. The Role of Inulin in Maintaining Antioxidant Capacity and Enzymatic Activities of Jerusalem Artichoke (Helianthus tuberosus L.) Cultivars During Cold Storage. Antioxidants 2025, 14, 1109. https://doi.org/10.3390/antiox14091109

AMA Style

Mu Y, Zhang B, Lv S, Li F, Zhao C. The Role of Inulin in Maintaining Antioxidant Capacity and Enzymatic Activities of Jerusalem Artichoke (Helianthus tuberosus L.) Cultivars During Cold Storage. Antioxidants. 2025; 14(9):1109. https://doi.org/10.3390/antiox14091109

Chicago/Turabian Style

Mu, Yuwen, Bohua Zhang, Shiqi Lv, Fencan Li, and Changming Zhao. 2025. "The Role of Inulin in Maintaining Antioxidant Capacity and Enzymatic Activities of Jerusalem Artichoke (Helianthus tuberosus L.) Cultivars During Cold Storage" Antioxidants 14, no. 9: 1109. https://doi.org/10.3390/antiox14091109

APA Style

Mu, Y., Zhang, B., Lv, S., Li, F., & Zhao, C. (2025). The Role of Inulin in Maintaining Antioxidant Capacity and Enzymatic Activities of Jerusalem Artichoke (Helianthus tuberosus L.) Cultivars During Cold Storage. Antioxidants, 14(9), 1109. https://doi.org/10.3390/antiox14091109

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