The Experts below are selected from a list of 1806 Experts worldwide ranked by ideXlab platform
M Horoszkiewiczhassan - One of the best experts on this subject based on the ideXlab platform.
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the influence of Chokeberry juice supplementation on the reduction of oxidative stress resulting from an incremental rowing ergometer exercise
International Journal of Sport Nutrition and Exercise Metabolism, 2005Co-Authors: L Pilaczynskaszczesniak, E. Deskur, Piotr Basta, A Skarpanskasteinborn, M HoroszkiewiczhassanAbstract:The aim of the study was to investigate the influence of an increased intake of anthocyanins, contained in Chokeberry juice, on the redox parameters in rowers performing a physical exercise during a 1-month training camp. The athletes were randomly assigned to receive 150 mL of Chokeberry juice daily, containing 23 mg/100 mL of anthocyanins (supplemented group), or placebo (control group). Before and after the supplementation period, the subjects performed an incremental rowing exercise test. Blood samples were taken from the antecubital vein before each exercise test, 1 min after the test, and following a 24-h recovery period. After the supplementation period, TBARS concentrations in the samples collected 1 min after the exercise test and following a 24-h recovery period were significantly lower in the subjects receiving Chokeberry juice than in the control group. In the supplemented group, glutathione peroxidase activity was lower in the samples collected 1 min after the exercise test, and superoxide dismutase activity was lower in the samples taken following a 24-h recovery, as compared to the subjects receiving placebo. These findings indicate that an increased intake of anthocyanins limits the exercise-induced oxidative damage to red blood cells, most probably by enhancing the endogenous antioxidant defense system.
Sung Chul Shin - One of the best experts on this subject based on the ideXlab platform.
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determination of Chokeberry aronia melanocarpa polyphenol components using liquid chromatography tandem mass spectrometry overall contribution to antioxidant activity
Food Chemistry, 2014Co-Authors: Ji Eun Lee, Gon-sup Kim, Semin Park, Yun-hi Kim, Man-bae Kim, Won Sup Lee, Sung Woo Jeong, Soo Jung Lee, Jong Sung Jin, Sung Chul ShinAbstract:Abstract The type and content of plant polyphenols can be influenced by maturity. Korean Chokeberry ( Aronia melanocarpa ) leaves of three different maturities (young, mature, and aged) were extracted with 70% aqueous methanol. The polyphenols in the leaves were analysed for the first time using high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS) and comparison with reported data. Among the 12 characterised components, five flavonoids, 3 , 4 , and 10 – 12 , and a dicaffeoylquinic acid derivative, 6 , were characterised for the first time in Chokeberry leaves. Each polyphenol component was validated and quantified using a representative polyphenol standard of the same group. The antioxidant activity of the three different mature leaf extracts was determined. The antioxidant activity was highest for young leaves, followed by mature and aged leaves. The results suggest that younger Chokeberry leaves may be more favourable for processing a higher quality functional tea due to their higher polyphenol content.
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Determination of Chokeberry (Aronia melanocarpa) polyphenol components using liquid chromatography–tandem mass spectrometry: Overall contribution to antioxidant activity
Food Chemistry, 2013Co-Authors: Ji Eun Lee, Gon-sup Kim, Semin Park, Yun-hi Kim, Man-bae Kim, Won Sup Lee, Sung Woo Jeong, Soo Jung Lee, Jong Sung Jin, Sung Chul ShinAbstract:Abstract The type and content of plant polyphenols can be influenced by maturity. Korean Chokeberry ( Aronia melanocarpa ) leaves of three different maturities (young, mature, and aged) were extracted with 70% aqueous methanol. The polyphenols in the leaves were analysed for the first time using high-performance liquid chromatography–tandem mass spectrometry (HPLC–MS/MS) and comparison with reported data. Among the 12 characterised components, five flavonoids, 3 , 4 , and 10 – 12 , and a dicaffeoylquinic acid derivative, 6 , were characterised for the first time in Chokeberry leaves. Each polyphenol component was validated and quantified using a representative polyphenol standard of the same group. The antioxidant activity of the three different mature leaf extracts was determined. The antioxidant activity was highest for young leaves, followed by mature and aged leaves. The results suggest that younger Chokeberry leaves may be more favourable for processing a higher quality functional tea due to their higher polyphenol content.
L Pilaczynskaszczesniak - One of the best experts on this subject based on the ideXlab platform.
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the influence of Chokeberry juice supplementation on the reduction of oxidative stress resulting from an incremental rowing ergometer exercise
International Journal of Sport Nutrition and Exercise Metabolism, 2005Co-Authors: L Pilaczynskaszczesniak, E. Deskur, Piotr Basta, A Skarpanskasteinborn, M HoroszkiewiczhassanAbstract:The aim of the study was to investigate the influence of an increased intake of anthocyanins, contained in Chokeberry juice, on the redox parameters in rowers performing a physical exercise during a 1-month training camp. The athletes were randomly assigned to receive 150 mL of Chokeberry juice daily, containing 23 mg/100 mL of anthocyanins (supplemented group), or placebo (control group). Before and after the supplementation period, the subjects performed an incremental rowing exercise test. Blood samples were taken from the antecubital vein before each exercise test, 1 min after the test, and following a 24-h recovery period. After the supplementation period, TBARS concentrations in the samples collected 1 min after the exercise test and following a 24-h recovery period were significantly lower in the subjects receiving Chokeberry juice than in the control group. In the supplemented group, glutathione peroxidase activity was lower in the samples collected 1 min after the exercise test, and superoxide dismutase activity was lower in the samples taken following a 24-h recovery, as compared to the subjects receiving placebo. These findings indicate that an increased intake of anthocyanins limits the exercise-induced oxidative damage to red blood cells, most probably by enhancing the endogenous antioxidant defense system.
Piotr Basta - One of the best experts on this subject based on the ideXlab platform.
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Effect of supplementation with Chokeberry juice on the inflammatory status and markers of iron metabolism in rowers
Journal of The International Society of Sports Nutrition, 2014Co-Authors: Anna Skarpańska-stejnborn, Piotr Basta, Justyna Sadowska, Łucja Pilaczyńska-szczeńniakAbstract:The aim of this study was to analyze the effect of supplementation with Chokeberry (Aronia melanocarpa) juice on the levels of pro-inflammatory cytokines, hepcidin, and selected markers of iron metabolism in rowers subjected to exhaustive exercise. This double-blind study included 19 members of the Polish Rowing Team. The subjects were randomly assigned to the supplemented group (n = 10), receiving 150 mL of Chokeberry juice for 8 weeks, or to the placebo group (n = 9). The participants performed a 2000-m test on a rowing ergometer at the beginning and at the end of the preparatory camp. Blood samples were obtained from the antecubital vein prior to each exercise test, one minute after completing the test, and after a 24-hour recovery period. The levels of hepcidin, interleukin 6 (IL-6), tumor necrosis factor alpha (TNF-alpha), ferritin, iron, uric acid, and myoglobin were determined, as well as the total iron-binding capacity, unbound iron-binding capacity, and total antioxidant capacity (TAC). Post-exercise, there was a significant increase in IL-6 and a significant decrease in the TAC in both groups, prior to and after supplementation with Chokeberry juice. At the end of the experiment, the supplemented athletes showed significantly lower post-exercise levels of TNF-alpha and significantly higher TACs and iron levels than the controls. Supplementation with Chokeberry juice results in an increase in the antioxidant activity of plasma and contributes significantly to reducing the TNF-alpha level.
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The influence of Chokeberry juice supplementation on the reduction of oxidative stress resulting from an incremental rowing ergometer exercise.
International Journal of Sport Nutrition and Exercise Metabolism, 2005Co-Authors: L Pilaczynska-szczesniak, A. Skarpanska-steinborn, E. Deskur, Piotr Basta, M. Horoszkiewicz-hassanAbstract:The aim of the study was to investigate the influence of an increased intake of anthocyanins, contained in Chokeberry juice, on the redox parameters in rowers performing a physical exercise during a 1-month training camp. The athletes were randomly assigned to receive 150 mL of Chokeberry juice daily, containing 23 mg/100 mL of anthocyanins (supplemented group), or placebo (control group). Before and after the supplementation period, the subjects performed an incremental rowing exercise test. Blood samples were taken from the antecubital vein before each exercise test, 1 min after the test, and following a 24-h recovery period. After the supplementation period, TBARS concentrations in the samples collected 1 min after the exercise test and following a 24-h recovery period were significantly lower in the subjects receiving Chokeberry juice than in the control group. In the supplemented group, glutathione peroxidase activity was lower in the samples collected 1 min after the exercise test, and superoxide di...
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the influence of Chokeberry juice supplementation on the reduction of oxidative stress resulting from an incremental rowing ergometer exercise
International Journal of Sport Nutrition and Exercise Metabolism, 2005Co-Authors: L Pilaczynskaszczesniak, E. Deskur, Piotr Basta, A Skarpanskasteinborn, M HoroszkiewiczhassanAbstract:The aim of the study was to investigate the influence of an increased intake of anthocyanins, contained in Chokeberry juice, on the redox parameters in rowers performing a physical exercise during a 1-month training camp. The athletes were randomly assigned to receive 150 mL of Chokeberry juice daily, containing 23 mg/100 mL of anthocyanins (supplemented group), or placebo (control group). Before and after the supplementation period, the subjects performed an incremental rowing exercise test. Blood samples were taken from the antecubital vein before each exercise test, 1 min after the test, and following a 24-h recovery period. After the supplementation period, TBARS concentrations in the samples collected 1 min after the exercise test and following a 24-h recovery period were significantly lower in the subjects receiving Chokeberry juice than in the control group. In the supplemented group, glutathione peroxidase activity was lower in the samples collected 1 min after the exercise test, and superoxide dismutase activity was lower in the samples taken following a 24-h recovery, as compared to the subjects receiving placebo. These findings indicate that an increased intake of anthocyanins limits the exercise-induced oxidative damage to red blood cells, most probably by enhancing the endogenous antioxidant defense system.
Maria Kratchanova - One of the best experts on this subject based on the ideXlab platform.
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Antiatherogenic and Cardioprotective Effects of Black Chokeberry (Aronia melanocarpa) Juice in Aging Rats.
Evidence-based Complementary and Alternative Medicine, 2015Co-Authors: Elena Daskalova, Christo G Kratchanov, Maria Kratchanova, Slavi Delchev, Yulia Peeva, Lyudmila Vladimirova-kitova, Petko DenevAbstract:Age-related diseases are a social problem of global significance and their prevention by natural products is a research area of particular interest. The present study is an approach to counteract the risk factors for atherosclerosis arising in the aging process by supplementation of Chokeberry juice. It employed a model of healthy adult rats monitored for a number of somatometric, serum lipidogram, and histopathological parameters, related to risk factors and their response to supplementation with antioxidant-rich Chokeberry juice. The results were used to calculate different atherogenic and cardioprotective indices, and all results were compared to those of young healthy rats. Chokeberry juice proved an extremely rich source of polyphenols resulting in very high antioxidant activity. Treatment with Aronia juice significantly lowered the proatherogenic low-density lipoprotein fraction of the animals studied and led to a 16.5% decrease in their total cholesterol. Atherogenic indices in Aronia-supplemented animals clearly showed lower atherogenic risk and cardioprotective indices indicated protection of the cardiovascular system. Besides that, Chokeberry juice retarded the age-related changes in the aortic wall and can be recommended as a prophylactic tool for healthy aging.
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bioavailability and antioxidant activity of black Chokeberry aronia melanocarpa polyphenols in vitro and in vivo evidences and possible mechanisms of action a review
Comprehensive Reviews in Food Science and Food Safety, 2012Co-Authors: Petko Denev, Christo G Kratchanov, Milan Ciz, Antonin Lojek, Maria KratchanovaAbstract:Abstract: Black Chokeberry (Aronia melanocarpa) is a distinctive berry with a high content of polyphenol compounds and possesses one of the highest in vitro antioxidant activities among fruits. The bioavailability of aronia polyphenols seems to be low, but there is ample evidence for Chokeberry health benefits including antidiabetic, cardioprotective, hepatoprotective, antimutagenic, and anticarcinogenic effects. This review presents the available information for the bioavailability and antioxidant activity of Chokeberry polyphenols and explains the possible mechanisms of action in vivo in the prevention and treatment of oxidative stress-related diseases. The review shows the available data for Chokeberry antioxidant activity in vitro, in isolated cells and cell lines, and in vivo, in both human subjects and animals. It is evident that in vivo antioxidant action of Chokeberry extends far beyond radical scavenging and includes suppression of reactive oxygen and nitrogen species formation, inhibition of prooxidant enzymes, restoration of antioxidant enzymes, and probably cellular signaling to regulate the level of antioxidant compounds and enzymes. The original contribution of this work is that it compiles the available information up to date and outlines the gaps and future directions in the assessment of Chokeberry antioxidant action in vivo.