The objective of this study was to assess the impact pulsed electric field (PEF) treatment on extraction polyphenolics and antioxidant activity from downgraded date palm fruits. PEF pretreatments (frequency: 30 Hz, time: 50 μs, pulse number: 240, strengths were found be 1, 2, 2.5 kV.cm−1, methanol (50%) temperatures (20, 40, °C)) optimized applied before produce an extract fruits with a high co...

The preparation of high quality DNA from polyphenoliccontaining plants such as field bean (Vicia faba), tomato (Lycopersicon esculentum), and potato (Solanum tuberositm) was difficult, because of DNA degradation mediated by secondary plant products such as phenolic terpenoids and tannins which may bind to DNA and/or RNA after cell lysis (John 1992). Common methods for DNA isolation from such pl...

INTRODUCTION Separation of polyphenolics in different plant materials using high-performance thin-layer chromatography (HPTLC) represents an effective method for their detection and quantification. OBJECTIVE To develop a simple, specific, precise, sensitive and accurate method for the simultaneous quantification of tiliroside (TRS), methyl brevifolincarboxylate (MBR) and ellagic acid (EA) in ...

Nutritional interventions, in this case, increasing dietary intake of fruits and vegetables, can retard and even reverse age-related declines in brain function and in cognitive and motor performance in rats. Our lab has shown that as Fischer 344 rats age their brains are increasingly vulnerable to oxidative stress. Dietary supplementation with fruit or vegetable extracts high in antioxidants (e...

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