The Experts below are selected from a list of 20103 Experts worldwide ranked by ideXlab platform
J B L Harkness - One of the best experts on this subject based on the ideXlab platform.
-
enhanced flue gas denitrification using ferrous cntdot edta and a Polyphenolic Compound in an aqueous scrubber system
Energy & Fuels, 1991Co-Authors: M H Mendelsohn, J B L HarknessAbstract:Previous work in this laboratory has involved studying the possibility of combined NO x /SOI2 scrubbing using various aqueous chemistries with a metal chelate additive. Recently, we have focused our work on the metal chelate ferrous•EDTA[Fe(II)•EDTA]. A problem encountered in the practical application of Fe(II)•EDTA is that the ferrous ion has been found to oxidize to the corresponding ferric species, leading to a decrease in NO x removal for the scrubbing solution containing the additive. We have found that addition of a Polyphenolic Compound leads to a sustained high NO x removal under various oxidizing conditions. We believe that the improved performance of Fe(II)•EDTA is due to the known capabilities of these organic Compounds both to inhibit oxidation of ferrous chelates by dissolved oxygen and to rapidly reduce any ferric ions back to the original ferrous species. These effects are illustrated by the following chemical reactions: O ( 1)+organic→oxidized organic, and Fe(III)+organic→Fe(II)+oxidized organic
-
enhance flue gas denitrification using ferrous edta and a Polyphenolic Compound in an aqueous scrubber system
American Chemical Society. National meeting. 200, 1991Co-Authors: M H Mendelsohn, J B L HarknessAbstract:Previous work in this laboratory has involved studying the possibility of combined NO x /SOI2 scrubbing using various aqueous chemistries with a metal chelate additive. Recently, we have focused our work on the metal chelate ferrous•EDTA[Fe(II)•EDTA]. A problem encountered in the practical application of Fe(II)•EDTA is that the ferrous ion has been found to oxidize to the corresponding ferric species, leading to a decrease in NO x removal for the scrubbing solution containing the additive. We have found that addition of a Polyphenolic Compound leads to a sustained high NO x removal under various oxidizing conditions. We believe that the improved performance of Fe(II)•EDTA is due to the known capabilities of these organic Compounds both to inhibit oxidation of ferrous chelates by dissolved oxygen and to rapidly reduce any ferric ions back to the original ferrous species. These effects are illustrated by the following chemical reactions: O ( 1)+organic→oxidized organic, and Fe(III)+organic→Fe(II)+oxidized organic
-
enhanced flue gas denitrification using ferrous edta and a Polyphenolic Compound having combined antioxidant and reducing properties
1990Co-Authors: M H Mendelsohn, J B L HarknessAbstract:Previous work in this laboratory has involved studying the possibility of combined NO{sub x}/SO{sub x} scrubbing using various aqueous chemistries with a metal chelate additive. Recently, we have focused our work on the metal chelate ferrous*EDTA. A major problem encountered in the practical application of ferrous*EDTA is that the ferrous ion has been found to oxidize to the corresponding ferric species leading to a decrease of the NO{sub x} removal for the scrubbing solution containing the additive. We have found that addition of a Polyphenolic Compound leads to a sustained high NO{sub x} removal under various oxidizing conditions. We believe that the improved performance of ferrous*EDTA is due to the known capabilities of these organic Compounds to both inhibit oxidation of ferrous chelates by dissolved oxygen and to rapidly reduce any ferric ions back to the original ferrous species. 5 refs., 7 figs.
Francesca Borrelli - One of the best experts on this subject based on the ideXlab platform.
-
inhibitory effect of caffeic acid phenethyl ester a plant derived Polyphenolic Compound on rat intestinal contractility
European Journal of Pharmacology, 2010Co-Authors: Gabriella Aviello, Caterina Scalisi, R Fileccia, Raffaele Capasso, Barbara Romano, Angelo A Izzo, Francesca BorrelliAbstract:Abstract Caffeic acid phenethyl ester (CAPE) exerts pharmacological actions (e.g. anti-inflammatory, chemopreventive) which are relevant for potential clinical application in the digestive tract. However, no study has been published on its possible effects on intestinal motility, to date. In the present study, we investigated the effect of this plant-derived Polyphenolic Compound on the spontaneous contractions of the rat isolated ileum. CAPE reduced (in a tetrodotoxin-insensitive manner) spontaneous ileal contractions and this effect was reduced by the l -type Ca 2+ channel blocker nifedipine and the chelant of calcium ethylenediaminetetraacetic acid. However, the effect of CAPE was not modified by a number of inhibitors/antagonists such as of phentolamine plus propranolol, atropine, tetrodotoxin, cyclopiazonic acid, ω-conotoxin, apamin, N G -nitro- l -arginine methyl ester, 3-isobutyl-1-methylxanthine, 9-(tetrahydro-2-furanyl)-9H-purin-6-amine, 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one or a combination of SR 140333, SR48968 and SR142801. In conclusion our study shows that (i) CAPE relaxed myogenic contractions of rat ileum and that (ii) this effect occurs, at least in part, throughout a mechanism involving l -type Ca 2+ channels.
-
pulmonary gastrointestinal and urogenital pharmacology inhibitory effect of caffeic acid phenethyl ester a plant derived Polyphenolic Compound on rat intestinal contractility
2010Co-Authors: Gabriella Aviello, Caterina Scalisi, R Fileccia, Raffaele Capasso, Barbara Romano, Angelo A Izzo, Francesca BorrelliAbstract:article i nfo Caffeic acid phenethyl ester (CAPE) exerts pharmacological actions (e.g. anti-inflammatory, chemopreven- tive) which are relevant for potential clinical application in the digestive tract. However, no study has been published on its possible effects on intestinal motility, to date. In the present study, we investigated the effect of this plant-derived Polyphenolic Compound on the spontaneous contractions of the rat isolated ileum. CAPE reduced (in a tetrodotoxin-insensitive manner) spontaneous ileal contractions and this effect was reduced by the L-type Ca 2+ channel blocker nifedipine and the chelant of calcium ethylenediaminete- traacetic acid. However, the effect of CAPE was not modified by a number of inhibitors/antagonists such as of phentolamine plus propranolol, atropine, tetrodotoxin, cyclopiazonic acid, ω-conotoxin, apamin, N G
M H Mendelsohn - One of the best experts on this subject based on the ideXlab platform.
-
enhanced flue gas denitrification using ferrous cntdot edta and a Polyphenolic Compound in an aqueous scrubber system
Energy & Fuels, 1991Co-Authors: M H Mendelsohn, J B L HarknessAbstract:Previous work in this laboratory has involved studying the possibility of combined NO x /SOI2 scrubbing using various aqueous chemistries with a metal chelate additive. Recently, we have focused our work on the metal chelate ferrous•EDTA[Fe(II)•EDTA]. A problem encountered in the practical application of Fe(II)•EDTA is that the ferrous ion has been found to oxidize to the corresponding ferric species, leading to a decrease in NO x removal for the scrubbing solution containing the additive. We have found that addition of a Polyphenolic Compound leads to a sustained high NO x removal under various oxidizing conditions. We believe that the improved performance of Fe(II)•EDTA is due to the known capabilities of these organic Compounds both to inhibit oxidation of ferrous chelates by dissolved oxygen and to rapidly reduce any ferric ions back to the original ferrous species. These effects are illustrated by the following chemical reactions: O ( 1)+organic→oxidized organic, and Fe(III)+organic→Fe(II)+oxidized organic
-
enhance flue gas denitrification using ferrous edta and a Polyphenolic Compound in an aqueous scrubber system
American Chemical Society. National meeting. 200, 1991Co-Authors: M H Mendelsohn, J B L HarknessAbstract:Previous work in this laboratory has involved studying the possibility of combined NO x /SOI2 scrubbing using various aqueous chemistries with a metal chelate additive. Recently, we have focused our work on the metal chelate ferrous•EDTA[Fe(II)•EDTA]. A problem encountered in the practical application of Fe(II)•EDTA is that the ferrous ion has been found to oxidize to the corresponding ferric species, leading to a decrease in NO x removal for the scrubbing solution containing the additive. We have found that addition of a Polyphenolic Compound leads to a sustained high NO x removal under various oxidizing conditions. We believe that the improved performance of Fe(II)•EDTA is due to the known capabilities of these organic Compounds both to inhibit oxidation of ferrous chelates by dissolved oxygen and to rapidly reduce any ferric ions back to the original ferrous species. These effects are illustrated by the following chemical reactions: O ( 1)+organic→oxidized organic, and Fe(III)+organic→Fe(II)+oxidized organic
-
enhanced flue gas denitrification using ferrous edta and a Polyphenolic Compound having combined antioxidant and reducing properties
1990Co-Authors: M H Mendelsohn, J B L HarknessAbstract:Previous work in this laboratory has involved studying the possibility of combined NO{sub x}/SO{sub x} scrubbing using various aqueous chemistries with a metal chelate additive. Recently, we have focused our work on the metal chelate ferrous*EDTA. A major problem encountered in the practical application of ferrous*EDTA is that the ferrous ion has been found to oxidize to the corresponding ferric species leading to a decrease of the NO{sub x} removal for the scrubbing solution containing the additive. We have found that addition of a Polyphenolic Compound leads to a sustained high NO{sub x} removal under various oxidizing conditions. We believe that the improved performance of ferrous*EDTA is due to the known capabilities of these organic Compounds to both inhibit oxidation of ferrous chelates by dissolved oxygen and to rapidly reduce any ferric ions back to the original ferrous species. 5 refs., 7 figs.
Gabriella Aviello - One of the best experts on this subject based on the ideXlab platform.
-
inhibitory effect of caffeic acid phenethyl ester a plant derived Polyphenolic Compound on rat intestinal contractility
European Journal of Pharmacology, 2010Co-Authors: Gabriella Aviello, Caterina Scalisi, R Fileccia, Raffaele Capasso, Barbara Romano, Angelo A Izzo, Francesca BorrelliAbstract:Abstract Caffeic acid phenethyl ester (CAPE) exerts pharmacological actions (e.g. anti-inflammatory, chemopreventive) which are relevant for potential clinical application in the digestive tract. However, no study has been published on its possible effects on intestinal motility, to date. In the present study, we investigated the effect of this plant-derived Polyphenolic Compound on the spontaneous contractions of the rat isolated ileum. CAPE reduced (in a tetrodotoxin-insensitive manner) spontaneous ileal contractions and this effect was reduced by the l -type Ca 2+ channel blocker nifedipine and the chelant of calcium ethylenediaminetetraacetic acid. However, the effect of CAPE was not modified by a number of inhibitors/antagonists such as of phentolamine plus propranolol, atropine, tetrodotoxin, cyclopiazonic acid, ω-conotoxin, apamin, N G -nitro- l -arginine methyl ester, 3-isobutyl-1-methylxanthine, 9-(tetrahydro-2-furanyl)-9H-purin-6-amine, 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one or a combination of SR 140333, SR48968 and SR142801. In conclusion our study shows that (i) CAPE relaxed myogenic contractions of rat ileum and that (ii) this effect occurs, at least in part, throughout a mechanism involving l -type Ca 2+ channels.
-
pulmonary gastrointestinal and urogenital pharmacology inhibitory effect of caffeic acid phenethyl ester a plant derived Polyphenolic Compound on rat intestinal contractility
2010Co-Authors: Gabriella Aviello, Caterina Scalisi, R Fileccia, Raffaele Capasso, Barbara Romano, Angelo A Izzo, Francesca BorrelliAbstract:article i nfo Caffeic acid phenethyl ester (CAPE) exerts pharmacological actions (e.g. anti-inflammatory, chemopreven- tive) which are relevant for potential clinical application in the digestive tract. However, no study has been published on its possible effects on intestinal motility, to date. In the present study, we investigated the effect of this plant-derived Polyphenolic Compound on the spontaneous contractions of the rat isolated ileum. CAPE reduced (in a tetrodotoxin-insensitive manner) spontaneous ileal contractions and this effect was reduced by the L-type Ca 2+ channel blocker nifedipine and the chelant of calcium ethylenediaminete- traacetic acid. However, the effect of CAPE was not modified by a number of inhibitors/antagonists such as of phentolamine plus propranolol, atropine, tetrodotoxin, cyclopiazonic acid, ω-conotoxin, apamin, N G
Erica Salasmunoz - One of the best experts on this subject based on the ideXlab platform.
-
effect of blanching and drying temperature on Polyphenolic Compound stability and antioxidant capacity of apple pomace
Food and Bioprocess Technology, 2012Co-Authors: Maria Elena Herasramirez, Armando Quinteroramos, Alejandro Camachodavila, John Barnard, Ricardo Talamasabbud, Jose Vinicio Torresmunoz, Erica SalasmunozAbstract:The effects of blanching and drying treatments on stability, physical properties, and antioxidant activity of apple pomace polyphenols were evaluated. Blanched and unblanched apples were extracted, and the pomace was dried in a cabinet dryer at a speed of 3 m/s at 50 °C, 60 °C, 70 °C, and 80 °C. The color, total phenolics, flavonoids, individual Polyphenolic Compounds, anthocyanins, and total antioxidant activity were analyzed. The blanching process caused a major retention in color, total Polyphenolic content, and total flavonoid content for fresh apple pomace when compared with fresh unblanched pomace. Drying of either fresh blanched or fresh unblanched pomace caused a significant reduction (P < 0.05) in total polyphenol and flavonoid content leading to a reduction in the total antioxidant activity. When compared with the unblanched treatment, drying the blanched pomace at 80 °C resulted in a product with significant amounts of total phenolics, flavonoids, and antioxidant activity. The individual phenolic Compounds were significantly increased (P < 0.05) in blanched pomace that was not dried when compared with unblanched samples. Drying blanched apple pomace did not cause a significant change in the concentration of individual Polyphenolic Compounds, but drying unblanched apple pomace caused a reduction in the concentrations of epicatechin and caffeic acid, with an important reduction in p-coumaric acid at temperatures higher than 60 °C. However, the drying process caused a significant reduction in the antioxidant capacity. Therefore, a combination of blanching and drying processes for apple pomace results in a product that maintains antioxidant capacity.