Effect of Shading on Development, Yield and Quality of Bastard Balm Herb ( Melittis melissophyllum L.)

The aim of the study was to assess the effects of shading on its development and accumulation of phenolics. Their content (verbascoside, apiin, luteolin-7- -glucoside, coumarin, 3,4-dihydroxycoumarin, -coumaric acid 2- -glucoside as well as -coumaric, -coumaric, chlorogenic, caffeic, ferulic and cic...

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Published in:Molecules (Basel, Switzerland) Switzerland), 2020-05, Vol.25 (9), p.2142
Main Authors: Szymborska-Sandhu, Izabela, Przybył, Jarosław L, Pióro-Jabrucka, Ewelina, Jędrzejuk, Agata, Węglarz, Zenon, Bączek, Katarzyna
Format: Article
Language:English
Subjects:
Acids
antioxidant enzymes
Antioxidants
Antioxidants - chemistry
Biomarkers
Catalase
Chlorophyll
chlorophyll a and b
Chromatography, High Pressure Liquid
Coumaric acid
Coumarin
Flavonoids
Flavonoids - chemistry
Food quality
glandular trichomes
Glucosides
Herbs
High-performance liquid chromatography
HPLC-DAD
Hydrogen peroxide
Lamiaceae - chemistry
Lamiaceae - physiology
Lamiaceae - radiation effects
Light
light intensity
Liquid chromatography
Malondialdehyde
Oils & fats
Oxidation-Reduction
Phenolic acids
phenolics
Phenols
Phytochemicals
Plant Development - radiation effects
Plant extracts
Plant Extracts - chemistry
Polyphenol oxidase
Raw materials
Seeds
Shading
Sunlight
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Summary:The aim of the study was to assess the effects of shading on its development and accumulation of phenolics. Their content (verbascoside, apiin, luteolin-7- -glucoside, coumarin, 3,4-dihydroxycoumarin, -coumaric acid 2- -glucoside as well as -coumaric, -coumaric, chlorogenic, caffeic, ferulic and cichoric acid) was determined in the herb using HPLC-DAD. The results showed that the content of abovementioned flavonoids and phenolic acids was highest in plants grown under full sunlight. On the other hand, a higher content of coumarin was observed in shaded plants, especially after the seed-setting stage. A similar tendency was noted for the amount of chlorophyll a and b. The content of hydrogen peroxide and malondialdehyde, the activity of polyphenol oxidase and catalase and the antioxidant capacity of plant extracts (measured using DPPH, ABTS and FRAP assays) were found to be the highest in the plants grown in full sunlight. However, the plants grown in moderate (30%) shade were found to thrive best.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules25092142