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Increasing medicinal and phytochemical compounds of coneflower (Echinacea purpurea L.) as affected by NO3/NH4+ ratio and perlite particle size in hydroponics


Ahmadi, F and Samadi, A and Sepehr, E and Rahimi, A and Shabala, S, Increasing medicinal and phytochemical compounds of coneflower (Echinacea purpurea L.) as affected by NO3/NH4+ ratio and perlite particle size in hydroponics, Scientific Reports, 11, (1) Article 15202. ISSN 2045-2322 (2021) [Refereed Article]


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Copyright 2021 The Author(s) Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

DOI: doi:10.1038/s41598-021-94589-4


Medicinal plants are considered as one of the most important sources of chemical compounds, so preparing a suitable culture media for medicinal plant growth is a critical factor. The present study is aimed to improve the caffeic acid derivatives and alkylamides percentages of Echinacea purpurea root extract in hydroponic culture media with different perlite particle size and NO3/NH4+ ratios. Perlite particle size in the growing media was varied as very coarse perlite (more than 2 mm), coarse perlite (1.52 mm), medium perlite (11.5 mm), fine perlite (0.51 mm), and very fine perlite (less than 0.5 mm) in different ratios to peat moss (including pure perlite, 50:50 v/v, 30:70 v/v, and pure peat moss). Two NO3/NH4+ ratios (90:10 and 70:30) were tested in each growing media. All phytochemical analyses were performed according to standard methods using high performance liquid chromatography (HPLC). It was found that the E. purpurea grown in the medium containing very fine-grade perlite with 50:50 v/v perlite to peat moss ratio had the maximum caffeic acid derivatives, including chicoric acid (17 mg g−1 DW), caftaric acid (6.3 mg g−1 DW), chlorogenic acid (0.93 mg g−1 DW), cynarin (0.84 mg g−1 DW), and echinacoside (0.73 mg g−1 DW), as well as, alkylamides (54.21%). The percentages of these phytochemical compounds increased by decreasing perlite particle size and increasing of NO3/NH4+ ratio. The major alkylamide in the E. purpurea root extract was dodeca-2E, 4E, 8Z-10 (E/Z)-tetraenoic acid isobutylamide in all treatments, ranging from 31.12 to 54.21% of total dry weight. It can be concluded that optimizing hydroponic culture media and nutrient solution has significant effects on E. purpurea chemical compounds.

Item Details

Item Type:Refereed Article
Keywords:phytochemical component, hydroponics, coneflower
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Crop and pasture biochemistry and physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Industrial crops
Objective Field:Industrial crops not elsewhere classified
UTAS Author:Ahmadi, F ( Fatemeh Ahmadi)
UTAS Author:Shabala, S (Professor Sergey Shabala)
ID Code:147837
Year Published:2021
Web of Science® Times Cited:4
Deposited By:Agriculture and Food Systems
Deposited On:2021-11-18
Last Modified:2022-04-22
Downloads:13 View Download Statistics

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