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  • Subcritical water extraction of phenolic compounds from pomegranate (Punica granatum L.) seed residues and investigation into their antioxidant activities with HPLC-ABTS assay
    He, Li ...
    Subcritical water extraction (SWE) of phenolic compounds from pomegranate seedresidues (PSR) was performed. Total phenolic content (TPC) and antioxidantcapacities of the extracts obtained at ... different temperatures were determined, and the individual antioxidant capacities were evaluated by coupling high performance liquid chromatography with ABTS radical reaction system (HPLC - ABTS +). The results showed that the optimum extraction time was 30 min, solid to water ratio was 1:40, and the highest TPC was obtained at 220 °C. The effect of extraction temperature on TPC was significant (p < 0.05), and TPC ranged from 651.7 to 4854.7 (mg/100 g DW) between 100 °C - 220 °C. HPLC - ABTS + profiles revealed that nine compounds had antioxidant activity. Furthermore, the formation of Maillard reaction products during SWE was investigated, and the content of 5-hydroxymethylfurfural (5-HMF) was determined. The comparative study indicated that SWE was a promising technique for preparation of PSR phenolics.
    Source: Food and bioproducts processing. - ISSN 0960-3085 (Vol. 90, iss. 2, Apr. 2012, str. 215-223)
    Type of material - article, component part
    Publish date - 2012
    Language - english
    COBISS.SI-ID - 14920470
    DOI

source: Food and bioproducts processing. - ISSN 0960-3085 (Vol. 90, iss. 2, Apr. 2012, str. 215-223)
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