The Experts below are selected from a list of 36 Experts worldwide ranked by ideXlab platform

Bhimanagouda S. Patil - One of the best experts on this subject based on the ideXlab platform.

  • Radical scavenging activities of Rio Red grapefruits and Sour orange fruit extracts in different in vitro model systems
    Bioresource Technology, 2008
    Co-Authors: Guddadarangavvanahally K. Jayaprakasha, Basavaraj Girennavar, Bhimanagouda S. Patil
    Abstract:

    Antioxidant fractions from two different citrus species such as Rio Red (Citrus paradise Macf.) and Sour orange (Citrus aurantium L.) were extracted with five different polar solvents using Soxhlet type extractor. The total phenolic content of the extracts was determined by Folin-Ciocalteu method. Ethyl acetate extract of Rio Red and Sour orange was found to contain maximum phenolics. The dried fractions were screened for their antioxidant activity potential using in vitro model systems such as 1,1-diphenyl-2-picryl hydrazyl (DPPH), phosphomolybdenum method and nitroblue tetrazolium (NBT) reduction at different concentrations. The methanol:water (80:20) fraction of Rio Red showed the highest radical scavenging activity 42.5%, 77.8% and 92.1% at 250, 500 and 1000 ppm, respectively, while methanol:water (80:20) fraction of Sour orange showed the lowest radical scavenging activity at all the tested concentrations. All citrus fractions showed good antioxidant capacity by the formation of phosphomolybdenum complex at 200 ppm. In addition, superoxide radical scavenging activity was assayed using non-enzymatic (NADH/phenaxine methosulfate) superoxide generating system. All the extracts showed variable superoxide radical scavenging activity. Moreover, methanol:water (80:20) extract of Rio Red and methanol extract of Sour orange exhibited marked reducing power in potassium ferricyanide reduction method. The data obtained using above in vitro models clearly establish the antioxidant potential of citrus fruit extracts. However, comprehensive studies need to be conducted to ascertain the in vivo bioavailability, safety and efficacy of such extracts in experimental animals. To the best of our knowledge, this is the first report on antioxidant activity of different polar extracts from Rio Red and Sour Oranges. © 2007 Elsevier Ltd. All rights reserved.

  • Radical scavenging activities of Rio Red grapefruits and Sour orange fruit extracts in different in vitro model systems.
    Bioresource Technology, 2007
    Co-Authors: Guddadarangavvanahally K. Jayaprakasha, Basavaraj Girennavar, Bhimanagouda S. Patil
    Abstract:

    Abstract Antioxidant fractions from two different citrus species such as Rio Red (Citrus paradise Macf.) and Sour orange (Citrus aurantium L.) were extracted with five different polar solvents using Soxhlet type extractor. The total phenolic content of the extracts was determined by Folin-Ciocalteu method. Ethyl acetate extract of Rio Red and Sour orange was found to contain maximum phenolics. The dried fractions were screened for their antioxidant activity potential using in vitro model systems such as 1,1-diphenyl-2-picryl hydrazyl (DPPH), phosphomolybdenum method and nitroblue tetrazolium (NBT) reduction at different concentrations. The methanol:water (80:20) fraction of Rio Red showed the highest radical scavenging activity 42.5%, 77.8% and 92.1% at 250, 500 and 1000 ppm, respectively, while methanol:water (80:20) fraction of Sour orange showed the lowest radical scavenging activity at all the tested concentrations. All citrus fractions showed good antioxidant capacity by the formation of phosphomolybdenum complex at 200 ppm. In addition, superoxide radical scavenging activity was assayed using non-enzymatic (NADH/phenaxine methosulfate) superoxide generating system. All the extracts showed variable superoxide radical scavenging activity. Moreover, methanol:water (80:20) extract of Rio Red and methanol extract of Sour orange exhibited marked reducing power in potassium ferricyanide reduction method. The data obtained using above in vitro models clearly establish the antioxidant potential of citrus fruit extracts. However, comprehensive studies need to be conducted to ascertain the in vivo bioavailability, safety and efficacy of such extracts in experimental animals. To the best of our knowledge, this is the first report on antioxidant activity of different polar extracts from Rio Red and Sour Oranges.

Guddadarangavvanahally K. Jayaprakasha - One of the best experts on this subject based on the ideXlab platform.

  • Radical scavenging activities of Rio Red grapefruits and Sour orange fruit extracts in different in vitro model systems
    Bioresource Technology, 2008
    Co-Authors: Guddadarangavvanahally K. Jayaprakasha, Basavaraj Girennavar, Bhimanagouda S. Patil
    Abstract:

    Antioxidant fractions from two different citrus species such as Rio Red (Citrus paradise Macf.) and Sour orange (Citrus aurantium L.) were extracted with five different polar solvents using Soxhlet type extractor. The total phenolic content of the extracts was determined by Folin-Ciocalteu method. Ethyl acetate extract of Rio Red and Sour orange was found to contain maximum phenolics. The dried fractions were screened for their antioxidant activity potential using in vitro model systems such as 1,1-diphenyl-2-picryl hydrazyl (DPPH), phosphomolybdenum method and nitroblue tetrazolium (NBT) reduction at different concentrations. The methanol:water (80:20) fraction of Rio Red showed the highest radical scavenging activity 42.5%, 77.8% and 92.1% at 250, 500 and 1000 ppm, respectively, while methanol:water (80:20) fraction of Sour orange showed the lowest radical scavenging activity at all the tested concentrations. All citrus fractions showed good antioxidant capacity by the formation of phosphomolybdenum complex at 200 ppm. In addition, superoxide radical scavenging activity was assayed using non-enzymatic (NADH/phenaxine methosulfate) superoxide generating system. All the extracts showed variable superoxide radical scavenging activity. Moreover, methanol:water (80:20) extract of Rio Red and methanol extract of Sour orange exhibited marked reducing power in potassium ferricyanide reduction method. The data obtained using above in vitro models clearly establish the antioxidant potential of citrus fruit extracts. However, comprehensive studies need to be conducted to ascertain the in vivo bioavailability, safety and efficacy of such extracts in experimental animals. To the best of our knowledge, this is the first report on antioxidant activity of different polar extracts from Rio Red and Sour Oranges. © 2007 Elsevier Ltd. All rights reserved.

  • Radical scavenging activities of Rio Red grapefruits and Sour orange fruit extracts in different in vitro model systems.
    Bioresource Technology, 2007
    Co-Authors: Guddadarangavvanahally K. Jayaprakasha, Basavaraj Girennavar, Bhimanagouda S. Patil
    Abstract:

    Abstract Antioxidant fractions from two different citrus species such as Rio Red (Citrus paradise Macf.) and Sour orange (Citrus aurantium L.) were extracted with five different polar solvents using Soxhlet type extractor. The total phenolic content of the extracts was determined by Folin-Ciocalteu method. Ethyl acetate extract of Rio Red and Sour orange was found to contain maximum phenolics. The dried fractions were screened for their antioxidant activity potential using in vitro model systems such as 1,1-diphenyl-2-picryl hydrazyl (DPPH), phosphomolybdenum method and nitroblue tetrazolium (NBT) reduction at different concentrations. The methanol:water (80:20) fraction of Rio Red showed the highest radical scavenging activity 42.5%, 77.8% and 92.1% at 250, 500 and 1000 ppm, respectively, while methanol:water (80:20) fraction of Sour orange showed the lowest radical scavenging activity at all the tested concentrations. All citrus fractions showed good antioxidant capacity by the formation of phosphomolybdenum complex at 200 ppm. In addition, superoxide radical scavenging activity was assayed using non-enzymatic (NADH/phenaxine methosulfate) superoxide generating system. All the extracts showed variable superoxide radical scavenging activity. Moreover, methanol:water (80:20) extract of Rio Red and methanol extract of Sour orange exhibited marked reducing power in potassium ferricyanide reduction method. The data obtained using above in vitro models clearly establish the antioxidant potential of citrus fruit extracts. However, comprehensive studies need to be conducted to ascertain the in vivo bioavailability, safety and efficacy of such extracts in experimental animals. To the best of our knowledge, this is the first report on antioxidant activity of different polar extracts from Rio Red and Sour Oranges.

Basavaraj Girennavar - One of the best experts on this subject based on the ideXlab platform.

  • Radical scavenging activities of Rio Red grapefruits and Sour orange fruit extracts in different in vitro model systems
    Bioresource Technology, 2008
    Co-Authors: Guddadarangavvanahally K. Jayaprakasha, Basavaraj Girennavar, Bhimanagouda S. Patil
    Abstract:

    Antioxidant fractions from two different citrus species such as Rio Red (Citrus paradise Macf.) and Sour orange (Citrus aurantium L.) were extracted with five different polar solvents using Soxhlet type extractor. The total phenolic content of the extracts was determined by Folin-Ciocalteu method. Ethyl acetate extract of Rio Red and Sour orange was found to contain maximum phenolics. The dried fractions were screened for their antioxidant activity potential using in vitro model systems such as 1,1-diphenyl-2-picryl hydrazyl (DPPH), phosphomolybdenum method and nitroblue tetrazolium (NBT) reduction at different concentrations. The methanol:water (80:20) fraction of Rio Red showed the highest radical scavenging activity 42.5%, 77.8% and 92.1% at 250, 500 and 1000 ppm, respectively, while methanol:water (80:20) fraction of Sour orange showed the lowest radical scavenging activity at all the tested concentrations. All citrus fractions showed good antioxidant capacity by the formation of phosphomolybdenum complex at 200 ppm. In addition, superoxide radical scavenging activity was assayed using non-enzymatic (NADH/phenaxine methosulfate) superoxide generating system. All the extracts showed variable superoxide radical scavenging activity. Moreover, methanol:water (80:20) extract of Rio Red and methanol extract of Sour orange exhibited marked reducing power in potassium ferricyanide reduction method. The data obtained using above in vitro models clearly establish the antioxidant potential of citrus fruit extracts. However, comprehensive studies need to be conducted to ascertain the in vivo bioavailability, safety and efficacy of such extracts in experimental animals. To the best of our knowledge, this is the first report on antioxidant activity of different polar extracts from Rio Red and Sour Oranges. © 2007 Elsevier Ltd. All rights reserved.

  • Radical scavenging activities of Rio Red grapefruits and Sour orange fruit extracts in different in vitro model systems.
    Bioresource Technology, 2007
    Co-Authors: Guddadarangavvanahally K. Jayaprakasha, Basavaraj Girennavar, Bhimanagouda S. Patil
    Abstract:

    Abstract Antioxidant fractions from two different citrus species such as Rio Red (Citrus paradise Macf.) and Sour orange (Citrus aurantium L.) were extracted with five different polar solvents using Soxhlet type extractor. The total phenolic content of the extracts was determined by Folin-Ciocalteu method. Ethyl acetate extract of Rio Red and Sour orange was found to contain maximum phenolics. The dried fractions were screened for their antioxidant activity potential using in vitro model systems such as 1,1-diphenyl-2-picryl hydrazyl (DPPH), phosphomolybdenum method and nitroblue tetrazolium (NBT) reduction at different concentrations. The methanol:water (80:20) fraction of Rio Red showed the highest radical scavenging activity 42.5%, 77.8% and 92.1% at 250, 500 and 1000 ppm, respectively, while methanol:water (80:20) fraction of Sour orange showed the lowest radical scavenging activity at all the tested concentrations. All citrus fractions showed good antioxidant capacity by the formation of phosphomolybdenum complex at 200 ppm. In addition, superoxide radical scavenging activity was assayed using non-enzymatic (NADH/phenaxine methosulfate) superoxide generating system. All the extracts showed variable superoxide radical scavenging activity. Moreover, methanol:water (80:20) extract of Rio Red and methanol extract of Sour orange exhibited marked reducing power in potassium ferricyanide reduction method. The data obtained using above in vitro models clearly establish the antioxidant potential of citrus fruit extracts. However, comprehensive studies need to be conducted to ascertain the in vivo bioavailability, safety and efficacy of such extracts in experimental animals. To the best of our knowledge, this is the first report on antioxidant activity of different polar extracts from Rio Red and Sour Oranges.

Naseem Ullah - One of the best experts on this subject based on the ideXlab platform.

  • comparative evaluation of physiochemical and gc ms analysis of Sour Oranges and sweet Oranges peels oil
    2013
    Co-Authors: Farhat Ali Khan, Naseem Ullah, Ahmed A Abdeltawab, Salem S Aldeyab, Riaz Ullah, M Siddique, Saudi Arabia
    Abstract:

    The studied were carried out for the comparative evaluation of physiochemical and GCMS analysis of Sour and sweet Oranges peel oil of Pakistan. The physiochemical analysis of Sour Oranges were shown that moisture (%), density, iodine value (g/100g), saponification value (mg/g), peroxide value (mg eq/kg), free fatty acid value (%) 0.34 ±0.22, 0.92 ± 0.16, 100 ± 0.44 , 171 ± 0.32 , 35.2 ± 0.12 and 5.8 ± 0.31 respectively, while similarly the sweet Oranges peels physiochemical analysis value were 0.42 ± 0.15 moisture (%), 0.94 ± 0.13 density, 103 ± 0.54 iodine value (g/100g), saponification value (mg/g), peroxide value (mg eq/kg) and free fatty acid value (%) were 183 ± 0.11 , 13.5 ± 0.17 and 2.3 ± 0.16 respectively. GC-MS analysis of Sour orange and sweet orange peels oil were also calculated. The results of the present study demonstrated that the seeds of citrus species investigated are a potential Source of valuable oil which might be utilized for edible and other industrial applications. (Farhat Ali Khan, Ahmed A. Abdeltawab, Salem S. Al-Deyab, Javid Ali, Riaz Ullah. Muhammad Nasimullah Qureshi, Ziaurrahman, Muhammad Siddique, Naseem Ullah Comparative Evaluation of Physiochemical and GC-MS Analysis of Sour Oranges and Sweet Oranges Peels Oil. Life Sci J 2013;10(10s):205-209) (ISSN:1097- 8135). http://www.lifesciencesite.com. 32

  • essential oil chemical composition and antimicrobial activity of Sour Oranges citrus aurantium peels
    2012
    Co-Authors: Naseem Ullah, Muhammad Amin, Sahibzada Muhammad Umar Khayam, Farhat Ali Khan, Arshad Hussain, Muhammad Khurram, Muhammad Nasimul, Allah Quarashi
    Abstract:

    The studied were carried out for the extraction of essential oil of Sour Oranges peel to determine its chemical composition, antibacterial and antifungal activities. The chemical composition percentage (%) of compounds found in essential oil of Sour Oranges peel were Alpha-pinene (0.60), Sabinene (0.19), Beta-pinene (0.21), Beta-Myrcene (2.57), Octanal (0.14), o-Cymene (0.06), D-Limonene (91.98), Beta-Phellandrene (0.01), Cis-beta-Ocimene (0.14), Alpha.- Methyl-alpha.-[4-methyl-3-pentenyl] (0.37), Beta. – Linalool (1.78), 1-Terpinene-4-ol (0.09), p- menth-1-en-8-ol (0.84), n- Decaldehyde ( 0.08), n-Octyl acetate (0.10), Cis- Geraniol (0.15), Bergamot mint oil (0.10), Trans-Geraniol (0.13), Alpha.-Citral (0.13), Nerol acetate (0.04), Geraniol acetate (0.08), Caryophyllene (0.05), Germacrene D (0.06), Trans-Nerolidol (0.05) and p-Crimene (0.04). The results of antibacterial activity of essential oil indicate that these were most effective against Salmonella typhi (12mm/10 µL, 14mm/ 25 µL and 17mm/50 µL) and Aspergillus niger (13mm/10 µL, 15mm/ 25 µL and 17mm/50 µL). The other tested microbes Escherichia coil ATCC 739, Staphylococcus aureus ATCC6538, Bacillus cereus, Pseudomonas spp, Shigella spp, Aspergillus flavus, and Aspergillus Parasiticus were also found the inhibitory zone range from 10mm to 16mm.

Farhat Ali Khan - One of the best experts on this subject based on the ideXlab platform.

  • comparative evaluation of physiochemical and gc ms analysis of Sour Oranges and sweet Oranges peels oil
    2013
    Co-Authors: Farhat Ali Khan, Naseem Ullah, Ahmed A Abdeltawab, Salem S Aldeyab, Riaz Ullah, M Siddique, Saudi Arabia
    Abstract:

    The studied were carried out for the comparative evaluation of physiochemical and GCMS analysis of Sour and sweet Oranges peel oil of Pakistan. The physiochemical analysis of Sour Oranges were shown that moisture (%), density, iodine value (g/100g), saponification value (mg/g), peroxide value (mg eq/kg), free fatty acid value (%) 0.34 ±0.22, 0.92 ± 0.16, 100 ± 0.44 , 171 ± 0.32 , 35.2 ± 0.12 and 5.8 ± 0.31 respectively, while similarly the sweet Oranges peels physiochemical analysis value were 0.42 ± 0.15 moisture (%), 0.94 ± 0.13 density, 103 ± 0.54 iodine value (g/100g), saponification value (mg/g), peroxide value (mg eq/kg) and free fatty acid value (%) were 183 ± 0.11 , 13.5 ± 0.17 and 2.3 ± 0.16 respectively. GC-MS analysis of Sour orange and sweet orange peels oil were also calculated. The results of the present study demonstrated that the seeds of citrus species investigated are a potential Source of valuable oil which might be utilized for edible and other industrial applications. (Farhat Ali Khan, Ahmed A. Abdeltawab, Salem S. Al-Deyab, Javid Ali, Riaz Ullah. Muhammad Nasimullah Qureshi, Ziaurrahman, Muhammad Siddique, Naseem Ullah Comparative Evaluation of Physiochemical and GC-MS Analysis of Sour Oranges and Sweet Oranges Peels Oil. Life Sci J 2013;10(10s):205-209) (ISSN:1097- 8135). http://www.lifesciencesite.com. 32

  • essential oil chemical composition and antimicrobial activity of Sour Oranges citrus aurantium peels
    2012
    Co-Authors: Naseem Ullah, Muhammad Amin, Sahibzada Muhammad Umar Khayam, Farhat Ali Khan, Arshad Hussain, Muhammad Khurram, Muhammad Nasimul, Allah Quarashi
    Abstract:

    The studied were carried out for the extraction of essential oil of Sour Oranges peel to determine its chemical composition, antibacterial and antifungal activities. The chemical composition percentage (%) of compounds found in essential oil of Sour Oranges peel were Alpha-pinene (0.60), Sabinene (0.19), Beta-pinene (0.21), Beta-Myrcene (2.57), Octanal (0.14), o-Cymene (0.06), D-Limonene (91.98), Beta-Phellandrene (0.01), Cis-beta-Ocimene (0.14), Alpha.- Methyl-alpha.-[4-methyl-3-pentenyl] (0.37), Beta. – Linalool (1.78), 1-Terpinene-4-ol (0.09), p- menth-1-en-8-ol (0.84), n- Decaldehyde ( 0.08), n-Octyl acetate (0.10), Cis- Geraniol (0.15), Bergamot mint oil (0.10), Trans-Geraniol (0.13), Alpha.-Citral (0.13), Nerol acetate (0.04), Geraniol acetate (0.08), Caryophyllene (0.05), Germacrene D (0.06), Trans-Nerolidol (0.05) and p-Crimene (0.04). The results of antibacterial activity of essential oil indicate that these were most effective against Salmonella typhi (12mm/10 µL, 14mm/ 25 µL and 17mm/50 µL) and Aspergillus niger (13mm/10 µL, 15mm/ 25 µL and 17mm/50 µL). The other tested microbes Escherichia coil ATCC 739, Staphylococcus aureus ATCC6538, Bacillus cereus, Pseudomonas spp, Shigella spp, Aspergillus flavus, and Aspergillus Parasiticus were also found the inhibitory zone range from 10mm to 16mm.