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Author: search.filters.author.Poovarodom, SumitraSubject: search.filters.subject.Antioxidant potential

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    The multiple nutrition properties of some exotic fruits: Biological activity and active metabolites
    (2011-08-01)
    Dembitsky, Valery M.
    ;
    Poovarodom, Sumitra
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    Leontowicz, Hanna
    ;
    Leontowicz, Maria
    ;
    Vearasilp, Suchada
    The main objective of this review was to describe the physicochemical and nutritional characteristics of twenty selected exotic fruits and the influence of their physiologically active compounds on human health, through scientifically proven information. The review presents the biologically active metabolites derived from exotic fruits (polyphenols, flavonoids, flavanols, tannins, ascorbic acid, anthocyanins, volatile compounds, minerals, and organic acids) and various analytical methods for their detection (elemental analysis, electrophoretic separation by SDS-polyacrylamide gel electrophoresis, and fast protein liquid and ion-exchange chromatography; GC-MS, HPLC/diode array detection (DAD), circular dichroism (CD), differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR), ultraviolet spectroscopy, two- and three-dimensional fluorimetry (2D-FL) and (3D-FL), and antioxidant radical scavenging assays (DPPH, FRAP, CUPRAC, ABTS, and ORAC). The correlation between the polyphenols and other bioactive compounds, and their antioxidant activities was reported for different fruit extracts. During the last two decades our international scientific group investigated in vitro the physicochemical and nutritional characteristics of avocado, dragon fruit, durian, kiwifruit, mango, mangosteen, persimmon and snake fruit, and in vivo their influence on laboratory animals and humans. Supplementation of diets with exotic fruits positively affects plasma lipid profile, antioxidant activity and histological examination of aorta in rats fed cholesterol-containing diets. The interaction between drugs and serum albumin plays an important role in the distribution and metabolism of drugs. The properties of polyphenol methanol extracts of exotic fruits showed the ability to quench serum albumin by forming the complexes similar with the ones between proteins and pure flavonoids. Our experimental data and a wide range of other investigations are included in this review. In conclusion, it is nessasary to promote a consumption of exotic fruits (a rich source of natural antioxidants) as a supplement to everyday human diet. © 2011 Elsevier Ltd.
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    The comparative characteristics of snake and kiwi fruits
    (2009-08-01)
    Gorinstein, Shela
    ;
    Haruenkit, Ratiporn
    ;
    Poovarodom, Sumitra
    ;
    Park, Yong Seo
    ;
    Vearasilp, Suchada
    In the time of globalization many of the tropical fruits can be find at the markets of Europe and North America. Most customers are not familiar with the nutritional and proliferative values of these fruits. Therefore, a less known snake fruit was compared with better known kiwi fruit, using fluorometry, FT-IR spectroscopy, several radical scavenging and proliferative assays and statistical evaluation. It was found similarity between snake fruit (cultivar Sumalee) and kiwi fruit (cultivar Hayward) in the contents of polyphenols (8.15-7.91, mg GAE g<sup>-1</sup> DW), antioxidant values by DPPH (11.28-10.24, μMTE g<sup>-1</sup> DW), and antiproliferative activities on both human cancer cell lines (Calu-6 for human pulmonary carcinoma, and SMU-601 for human gastric carcinoma, 90.5-87.6 and 89.3-87.1%, cell survival, respectively). In conclusion, snake fruit cultivar Sumalee is comparable with kiwi fruit cultivar Hayward. Two fruits can be used as supplements to the normal diet. Consumption of a combination of both fruits could be recommended in order to receive the best results. © 2009 Elsevier Ltd. All rights reserved.
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    Two exotic fruits positively affect rat's plasma composition
    (2007-01-01)
    Leontowicz, Maria
    ;
    Leontowicz, Hanna
    ;
    Drzewiecki, Jerzy
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    Jastrzebski, Zenon
    ;
    Haruenkit, Ratiporn
    The aim of this investigation was to determine the bioactive compounds and the antioxidant potentials of Snake fruit and Mangosteen and their influence on plasma lipid levels and antioxidant activity in rats fed cholesterol-containing diets. It was found that total polyphenols and antioxidant potentials of Snake fruit were significantly higher than those of Mangosteen (P < 0.05). A cholesterol-containing diet supplemented with the studied exotic fruits showed a positive affect on rat's plasma lipid levels and on the antioxidant activity during 30 days of feeding. In rat's plasma of the Chol/Snake diet group, the fibrinogen fraction showed a decrease in the amounts and compositions of electrophoretic protein bands in the range of 110 and 14 kDa. However, all the positive results of this experiment on animals could not be automatically applied to humans. © 2006 Elsevier Ltd. All rights reserved.