Article (Scientific journals)
Salinity impact on seed yield, polyphenols composition and antioxidant activity of Fennel (Foeniculum vulgarae Mill) extracts
Bettaieb ép Rebey, Ines; Bourgou, S.; Marzouk, B. et al.
2017In Journal of New Sciences, Conférence CSIEA 2017, p. 2610-2619
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Keywords :
Foeniculum vulgarae Mill; seeds; salinity; polyphenols; antioxidant
Abstract :
[en] Recently, medicinal and aromatic plants have received much attention in several fields such agroalimentary, perfumes, pharmaceutical industries and natural cosmetic products. The consumption of herbal medicines is widespread and is continuously increasing worldwide. Although, secondary metabolites in the medicinal and aromatic plants were fundamentally produced by genetic processing but, their biosynthesis is strongly influenced by environmental factors. Salinity is one of the major factors that affect essential oil biosynthesis and secretion (Heuer et al. 2002). In Tunisia, salt-affected soils cover about 10% of the total area of the country. Salinity led to biochemical disorders and can change plant behaviour regarding the biosynthesis of primary and secondary metabolites. Among all the secondary metabolites synthesized by plants, phenolic compounds are some of the most widespread. In this context, this research evaluated the effect of salinity on total and individual polyphenols contents as well as the antioxidant activities of fennel (Foeniculum vulgarae Mill.) seeds of two geographic origins, Tunisia (TFS) and Egypt (EFS). This plant is one of the most common aromatics in the Mediterranean kitchen. Plants were treated with different concentrations of NaCl treatment: 0, 50, and 75 mmoL. Plant growth was significantly reduced with the severity of saline treatment. This also caused important reductions in the seed yield and yield components. Besides, total polyphenol content was higher in treated seeds, and salinity improved the amount of individual phenolic compounds. Moreover, antioxidant activities of the extracts were determined by four different test systems, namely 2,2-diphenyl-1-picrylhydrazyl, β-carotene/linoleic acid chelating, and reducing power assays. The highest antioxidant activities were reveled in severe stressed plants for both TFS and EFS. In this case, fennel seeds produced under saline conditions may function as a potential source of antioxidant compounds, which could support the utilization of this plant in a large field of applications such as food industry.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Chemistry
Author, co-author :
Bettaieb ép Rebey, Ines ;  Université de Liège - ULiège > chercheur libre en sc. agro. & ingé. biol.
Bourgou, S.
Marzouk, B.
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Ksouri, R.
Language :
English
Title :
Salinity impact on seed yield, polyphenols composition and antioxidant activity of Fennel (Foeniculum vulgarae Mill) extracts
Publication date :
2017
Journal title :
Journal of New Sciences
eISSN :
2286-5314
Publisher :
Sunblo, Monastir, Tunisia
Volume :
Conférence CSIEA 2017
Pages :
2610-2619
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 20 November 2017

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