The Effect of Drought on the Content of Active Substances of Flax Fibers

ABSTRACT

The aim of the research was to identify differences in the content of phenolic acids in flax fibers and antioxidant activity of the fibers depending on the soil moisture level during plant growth and flax variety. The experiment involved cultivating flax under controlled conditions with constant levels of irrigation: 25%, 35%, and 45% of field water capacity (FWC). The experiment conducted in the vegetative hall of the Institute of Natural Fibers and Medicinal Plants, National Research Institute in Poland was repeated three times: in 2019, 2020, and 2021. The fibers were extracted from the straw with use of dew retting method. Flax fibers exhibit biological activity. In current study, the impact of drought during flax growth on the antioxidant activity of fibers was determined, as bioactive fibers of linen clothing touching the skin can contribute to neutralizing free radicals formed next to human body. The antioxidant activity of tested fibers was examined using DPPH and FRAP methods. The quantity of phenolic acids may affect the antioxidant capacity of the fibers. The research results showed that the cultivation of flax plants at a soil moisture level of 45% FWC favors the development of antioxidant activity in the fibers.

摘要

本研究的目的是确定亚麻纤维中酚酸含量和纤维抗氧化活性的差异，这取决于植物生长过程中的土壤湿度水平和亚麻品种. 试验包括在控制条件下种植亚麻，灌溉水平不变: 分别为田间持水量的25%、35%和45%. 该实验在波兰国家研究所天然纤维和药用植物研究所的植物大厅进行了三次重复: 2019年、2020年和2021年. 采用露水脱胶法从稻草中提取纤维. 亚麻纤维具有生物活性. 在目前的研究中，确定了亚麻生长过程中干旱对纤维抗氧化活性的影响，因为亚麻服装中接触皮肤的生物活性纤维有助于中和人体附近形成的自由基. 使用DPPH和FRAP方法检测测试纤维的抗氧化活性. 酚酸的含量可能会影响纤维的抗氧化能力. 研究结果表明，在45%FWC的土壤水分水平下培养亚麻植物有利于纤维抗氧化活性的发展.

KEYWORDS:

• DPPH
• FRAP
• flax
• fibers
• drought stress
• phenolic acids

关键词:

• 亚麻
• 纤维
• 干旱胁迫
• 酚酸

Disclosure statement

No potential conflict of interest was reported by the author(s).

Author’s contribution

Conceptualization: Małgorzata Zimniewska, Edyta Kwiatkowska

methodology: Edyta Kwiatkowska, Małgorzata Zimniewska,

software: Edyta Kwiatkowska

validation: Edyta Kwiatkowska

formal analysis: Edyta Kwiatkowska

investigation: Edyta Kwiatkowska

resources: Edyta Kwiatkowska, Patrycja Przybylska, Agnieszka Gryszczyńska, Wanda Różańska

data curation: Edyta Kwiatkowska

writing – original draft preparation: Edyta Kwiatkowska, Małgorzata Zimniewska

writing – review and editing: Małgorzata Zimniewska, Edyta Kwiatkowska

visualization: Edyta Kwiatkowska, Patrycja Przybylska, Agnieszka Gryszczyńska, Wanda Różańskaa

supervision, Małgorzata Zimniewska

project administration: Edyta Kwiatkowska

All authors have read and agreed to the published version of the manuscript.

Ethical approval

We confirm that all the research meets ethical guidelines and adheres to the legal requirements of the study country. The research does not involve any human or animal-welfare-related issues.

Additional information

Funding

This work was supported by the Ministry of Education and Science of Poland within the Institute of Natural Fibers and Medicinal Plants National Research Institute, the statutory activity 2023.