Bioactive compounds contents, antioxidant and antimicrobial activities during ripening of Prunus persica L. varieties from the North West of Tunisia

•Phytochemical composition depends on stage of maturation and variety.•Antioxidant power is proportional to concentrations and stages of maturation.•Antimicrobial potential is more pronounced during the first stage of maturation.•Enzymes inhibition assays give an idea about therapeutic applications....

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Bibliographic Details
Published in:Food chemistry 2016-08, Vol.204, p.29-36
Main Authors: Belhadj, Feten, Somrani, Imen, Aissaoui, Neyssene, Messaoud, Chokri, Boussaid, Mohamed, Marzouki, M.Nejib
Format: Article
Language:English
Subjects:
Anthocyanins - analysis
Anti-Infective Agents - analysis
Antimicrobial
Antioxidant
Antioxidants - analysis
Bacillus cereus - drug effects
Bacillus subtilis - drug effects
Candida albicans
Candida albicans - drug effects
Carotenoids - analysis
Enzymes inhibition
Escherichia coli - drug effects
Flavonoids - analysis
Fruit - chemistry
Klebsiella pneumoniae - drug effects
Listeria monocytogenes
Listeria monocytogenes - drug effects
Phytochemicals - analysis
Plant Extracts - analysis
Polyphenols - analysis
Prunus
Prunus persica
Prunus persica - chemistry
Staphylococcus aureus
Staphylococcus aureus - drug effects
Tannins - analysis
Tunisia
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Summary:•Phytochemical composition depends on stage of maturation and variety.•Antioxidant power is proportional to concentrations and stages of maturation.•Antimicrobial potential is more pronounced during the first stage of maturation.•Enzymes inhibition assays give an idea about therapeutic applications. Bioactive molecules from fruits of four varieties of Prunus persica at different stages of ripening (green, small orange, red) were studied. For example, contents on polyphenols (20.36mg GAE/g FW) and flavonoids (0.764mg RE/g FW) were high and varied according variety. The antioxidant activity, using four different tests (DPPH radical scavenging activity, reducing power, β carotene bleaching system and TBARS assay) showed that the variety Chatos exhibited the highest antioxidant activity comparing with others varieties. The antibacterial activity of Prunus persica varieties studied seems to be more sensitive against Staphylococcus aureus and Listeria monocytogenes. The capacity of peach DMSO extracts to inhibit Candida albicans growth was more pronounced, especially, in the presence of Chatos DMSO extract. Enzymes inhibition gives results which correlate with polyphenols, flavonoids and condensed tannins contents, and so, confirm the fascinating bioactivity of this fruit.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2016.02.111