Impact of Foliar Application of Amino Acids on Essential Oil Content, Odor Profile, and Flavonoid Content of Different Mint Varieties in Field Conditions

Mint is an industrial plant that is a good source of essential oil and many phenolic compounds that have several positive benefits to human health and can be used to prevent the development of many diseases. The aim of this research was to investigate the possibility of increasing essential oil and...

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Bibliographic Details
Published in:Plants (Basel) 2022-11, Vol.11 (21), p.2938
Main Authors: Velička, Aloyzas, Tarasevičienė, Živilė, Hallmann, Ewelina, Kieltyka-Dadasiewicz, Anna
Format: Article
Language:English
Subjects:
Amino acid composition
Amino acids
aromatic amino acids
Chemical composition
Chemical compounds
Chemical properties
Cultivars
Essential oils
Flavonoids
Flowers & plants
Foliar applications
Industrial plants
Influence
Mentha piperita
Mentha spicata
Metabolites
Mints (Plants)
Odor
Oils & fats
Phenolic compounds
Phenols
Phenylalanine
Secondary metabolites
Spraying
Tryptophan
Tyrosine
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Summary:Mint is an industrial plant that is a good source of essential oil and many phenolic compounds that have several positive benefits to human health and can be used to prevent the development of many diseases. The aim of this research was to investigate the possibility of increasing essential oil and flavonoid content, changing the chemical composition of these compounds in different mint cultivars under foliar application with precursors (phenylalanine, tryptophan, and tyrosine) at two concentrations, 100 and 200 mg L , to enable the possibilities for wider use of these plants when they are grown in field conditions. Spraying with phenylalanine at 100 mg L concentration increased essential oil content in 'Granada' plants by 0.53 percentage units. Foliar application with tyrosine solutions at 100 mg L concentration most effectively influenced the essential oil odor profile 'Crispa'. The highest number of total flavonoids was in 'Swiss' sprayed with tyrosine at 100 mg L concentration. The flavonoid content depended on the mint cultivar, amino acids, and their concentration. The results showed that the effect of amino acid solutions on different secondary metabolites' quantitative and qualitative composition differed depending on the mint cultivar; therefore, amino acids and their concentrations must be selected based on the cultivar they are targeting.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants11212938