The present study attempts to examine the heat transfer and pressure drop aspects of a 11-channel dimple plate heat exchanger with hot water as the hot fluid and sodium benzoate (food preservative) as the cold fluid. The outcome of the mass flow rate of hot and cold fluids on the convective heat transfer coefficient and overall heat transfer coefficient were investigated. Furthermore, the effect of Reynolds number on the pressure drop and the Nusselt number were observed. The experimental results demonstrated that when the mass flow rate of the cold fluid increases, so does the overall heat transfer coefficient and the convective heat transfer coefficient. Convective heat transfer coefficient, overall heat transfer coefficient, pressure drop and Nusselt number were increased when sodium benzoate concentration is varied (0.2, 0.4, 0.6% w/w). A correlation is obtained on the basis of experimental results to estimate the Nusselt number as a function of Reynolds and Prandtl number.
{"title":"Experimental Investigation on Heat Transfer and Pressure Drop Characteristics of Food Additive in Dimple Plate Heat Exchanger","authors":"Arumugam Gopal, P. Duraisamy, T. Marimuthu","doi":"10.37358/rc.22.3.8539","DOIUrl":"https://doi.org/10.37358/rc.22.3.8539","url":null,"abstract":"\u0000The present study attempts to examine the heat transfer and pressure drop aspects of a 11-channel dimple plate heat exchanger with hot water as the hot fluid and sodium benzoate (food preservative) as the cold fluid. The outcome of the mass flow rate of hot and cold fluids on the convective heat transfer coefficient and overall heat transfer coefficient were investigated. Furthermore, the effect of Reynolds number on the pressure drop and the Nusselt number were observed. The experimental results demonstrated that when the mass flow rate of the cold fluid increases, so does the overall heat transfer coefficient and the convective heat transfer coefficient. Convective heat transfer coefficient, overall heat transfer coefficient, pressure drop and Nusselt number were increased when sodium benzoate concentration is varied (0.2, 0.4, 0.6% w/w). A correlation is obtained on the basis of experimental results to estimate the Nusselt number as a function of Reynolds and Prandtl number.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79021687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abrasive water jet machining (AWJM) is an innovative machining technology recognized for cutting tougher materials smoothly. This study investigates the significance of AWJM parameters on surface roughness (SR) and material removal rate (MRR); while machining AISI1045medium carbon steel. Pocket milling has been done on the material; pockets of definite size/specifications are machined and associated MRR and SR are investigated. The Input parameters considered are Standoff distance (SOD), Cutting feed, Pressure. Experimental parameters are analyzed as per Taguchi method (DOE). The interaction effects of input process parameters are studied through 3D contour plots. ANOVA is used to determine the influencing parameter, and it has been verified that the ideal combination of Taguchi process parameters satisfies the actual machining of material.
{"title":"Pocket Milling of AISI 1045 Steel using Abrasive Water Jet Machining by Varying Contours","authors":"Vishnuja Umapathy, Bhaskar Govindaswamy Bhavani","doi":"10.37358/rc.22.2.8520","DOIUrl":"https://doi.org/10.37358/rc.22.2.8520","url":null,"abstract":"\u0000Abrasive water jet machining (AWJM) is an innovative machining technology recognized for cutting tougher materials smoothly. This study investigates the significance of AWJM parameters on surface roughness (SR) and material removal rate (MRR); while machining AISI1045medium carbon steel. Pocket milling has been done on the material; pockets of definite size/specifications are machined and associated MRR and SR are investigated. The Input parameters considered are Standoff distance (SOD), Cutting feed, Pressure. Experimental parameters are analyzed as per Taguchi method (DOE). The interaction effects of input process parameters are studied through 3D contour plots. ANOVA is used to determine the influencing parameter, and it has been verified that the ideal combination of Taguchi process parameters satisfies the actual machining of material.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90211305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ruxandra-Maria Ilie-Mihai, Raluca-Ioana Stefan-van Staden, J. F. Staden, H. Aboul‐Enein
Hepatitis C virus is very common amongst population infected with viral hepatitis. A very important point before deciding on the correct treatment is the stage of illness. More people are detected too late, and therefore the treatment was not efficient. A highly sensitive and selective screening system for early detection is needed in order to cure the patient cured. Therefore, this review is summarizing new methods of detection of specific biomarkers/genotypes for viral hepatitis C, to help find the highest sensitive screening methods that may influence the decision of the most efficient treatment.
{"title":"Recent Electrochemical Methods Proposed for the Detection of Hepatitis C Virus. A Minireview","authors":"Ruxandra-Maria Ilie-Mihai, Raluca-Ioana Stefan-van Staden, J. F. Staden, H. Aboul‐Enein","doi":"10.37358/rc.22.2.8515","DOIUrl":"https://doi.org/10.37358/rc.22.2.8515","url":null,"abstract":"\u0000Hepatitis C virus is very common amongst population infected with viral hepatitis. A very important point before deciding on the correct treatment is the stage of illness. More people are detected too late, and therefore the treatment was not efficient. A highly sensitive and selective screening system for early detection is needed in order to cure the patient cured. Therefore, this review is summarizing new methods of detection of specific biomarkers/genotypes for viral hepatitis C, to help find the highest sensitive screening methods that may influence the decision of the most efficient treatment.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85158469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Dobra, S. García‐Granda, Adina Negre, M. Ciopec, N. Nemeș, H. Iosif, P. Negrea, Narcis Dutean, Sorin Iliev, L. Cotet, Alina Boiangiu, L. Filipescu
Aluminum hydroxide is a key product for the industrial production of alumiana and aluminium, ceramics insulator and refractories, desiccants, absorbents, flame retardants, filers for plastics and rubbers, catalysts, and various construction materials. The production of these arrays of useful material products is grounded on the multiple thermal decomposition pathways of Al(OH)3, which involve major crystallographic dislocations and many microstructure reconfigurations on variable lines of phase transitions, from the raw material up to large varieties of precursors and commercial grade products. A wide range of literature on this subject is available, and recent reviews cover suitable information about preparation and characterization of different activated alumina products with specific properties and applications. In our previous papers, there was studied the mechanisms of aluminum hydroxide phase transitions, during low temperature calcination, namely, at 260ºC, 300ºC, 400ºC and 600 ºC, under chosen particularly conditions, for promoting the nucleation of the amorphous phases. Collected data suggest that raw aluminum hydroxide; dried, milled and classified is a precursor for the new low temperature activated alumina transition phases, carrying distinctive characteristics and properties, due to products enrichment in amorphous phases. Accordingly, as effects of the main driving factors (temperature and rate of heating, and initial particle size dimension) on the aluminum hydroxide as new precursor, notable changes were observed in products mineral composition, morphology and specific surface area, pore size, pore distribution, and the particle size distribution. Beside, some other secondary effects have to be apprehended. For example, the main phase transition process dinamic factors control over some physical and technical properties of the new products, like: absolute density, brightness, oil absorption capacity and water absorption capacity. The purpose of this work was to continue the characterization of low temperature activation alumina products, and also, to measure the adsorption capacity and to reveal adsorption kinetics mechanisms. Thus, the first step of survey was silver adsorption maximum capacity measurements for all sample prepared by heating the precursor alumina hydroxide, milled and classified as 5 different dimension size fractions to 260, 300, 400 and 600ºC. Hereinafter, four samples, carefully selected as representative for the entire lot of samples, were used for the study of kinetics mechanism and data fitting to the adequate kinetic equations. Confident data validate the pseudo second order kinetic model for the entire activation process, independently of samples heating temperature and particles dimension.
{"title":"Silver Adsorption on the Low Temperature Activated Alumina Grades. I. Adsorption Capacity and Kinetics","authors":"G. Dobra, S. García‐Granda, Adina Negre, M. Ciopec, N. Nemeș, H. Iosif, P. Negrea, Narcis Dutean, Sorin Iliev, L. Cotet, Alina Boiangiu, L. Filipescu","doi":"10.37358/rc.22.2.8516","DOIUrl":"https://doi.org/10.37358/rc.22.2.8516","url":null,"abstract":"\u0000Aluminum hydroxide is a key product for the industrial production of alumiana and aluminium, ceramics insulator and refractories, desiccants, absorbents, flame retardants, filers for plastics and rubbers, catalysts, and various construction materials. The production of these arrays of useful material products is grounded on the multiple thermal decomposition pathways of Al(OH)3, which involve major crystallographic dislocations and many microstructure reconfigurations on variable lines of phase transitions, from the raw material up to large varieties of precursors and commercial grade products. A wide range of literature on this subject is available, and recent reviews cover suitable information about preparation and characterization of different activated alumina products with specific properties and applications. In our previous papers, there was studied the mechanisms of aluminum hydroxide phase transitions, during low temperature calcination, namely, at 260ºC, 300ºC, 400ºC and 600 ºC, under chosen particularly conditions, for promoting the nucleation of the amorphous phases. Collected data suggest that raw aluminum hydroxide; dried, milled and classified is a precursor for the new low temperature activated alumina transition phases, carrying distinctive characteristics and properties, due to products enrichment in amorphous phases. Accordingly, as effects of the main driving factors (temperature and rate of heating, and initial particle size dimension) on the aluminum hydroxide as new precursor, notable changes were observed in products mineral composition, morphology and specific surface area, pore size, pore distribution, and the particle size distribution. Beside, some other secondary effects have to be apprehended. For example, the main phase transition process dinamic factors control over some physical and technical properties of the new products, like: absolute density, brightness, oil absorption capacity and water absorption capacity. The purpose of this work was to continue the characterization of low temperature activation alumina products, and also, to measure the adsorption capacity and to reveal adsorption kinetics mechanisms. Thus, the first step of survey was silver adsorption maximum capacity measurements for all sample prepared by heating the precursor alumina hydroxide, milled and classified as 5 different dimension size fractions to 260, 300, 400 and 600ºC. Hereinafter, four samples, carefully selected as representative for the entire lot of samples, were used for the study of kinetics mechanism and data fitting to the adequate kinetic equations. Confident data validate the pseudo second order kinetic model for the entire activation process, independently of samples heating temperature and particles dimension.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78311046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. Lin, M. Tang, Jian Hua Chen, Yang Huang, Q. J. Lin, Y. Huang
In this experiment, polyethyleneimine (PEI) was used to modify the surface of flower-like molybdenum disulfide, and the PEI/MoS2 adsorbent was successfully synthesized and applied to remove Cr(VI) from wastewater. The physical and chemical property of PEI/MoS2 were analyzed by TEM, SEM and FTIR, etc. The affecting factors of the adsorption of Cr(VI) by PEI/MoS2 were discussed, including the effects of PEI loading, concentration of Cr(VI), pH value, etc. When the solution temperature is 25 oC, the solution pH is 2, the concentration of PEI/MoS2 composites adsorbent and Cr(VI) solution are 0.1 g/L and 50 mg/L, respectively, the adsorption amount of Cr(VI) by PEI/MoS2-10 is 120.7 mg/g. Experiments show that PEI/MoS2-10 has a strong selectivity to Cr(VI), and regeneration experiments show that PEI/MoS2 has a high reusable.
{"title":"Preparation and Characterization of Polyethyleneimine/Moliybdenum Disufide Composite for Hexavalent Chromium Removal from Aqueous Systems","authors":"W. Lin, M. Tang, Jian Hua Chen, Yang Huang, Q. J. Lin, Y. Huang","doi":"10.37358/rc.22.2.8521","DOIUrl":"https://doi.org/10.37358/rc.22.2.8521","url":null,"abstract":"\u0000In this experiment, polyethyleneimine (PEI) was used to modify the surface of flower-like molybdenum disulfide, and the PEI/MoS2 adsorbent was successfully synthesized and applied to remove Cr(VI) from wastewater. The physical and chemical property of PEI/MoS2 were analyzed by TEM, SEM and FTIR, etc. The affecting factors of the adsorption of Cr(VI) by PEI/MoS2 were discussed, including the effects of PEI loading, concentration of Cr(VI), pH value, etc. When the solution temperature is 25 oC, the solution pH is 2, the concentration of PEI/MoS2 composites adsorbent and Cr(VI) solution are 0.1 g/L and 50 mg/L, respectively, the adsorption amount of Cr(VI) by PEI/MoS2-10 is 120.7 mg/g. Experiments show that PEI/MoS2-10 has a strong selectivity to Cr(VI), and regeneration experiments show that PEI/MoS2 has a high reusable.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77588952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An assessment of the variability of biogas components captured in an active and closed municipal waste landfill sites differing of amount deposited waste, activity period with their passive degassing, was presented in the article. The results of research did not show significant differences between components of LFG from studied landfill sites. But was confirmed that the two landfill sites including used landfill site, became at the last phase degradation of waste and advantage the anaerobic processes at the low value below 0.02 of CH4/O2 indicator. It was demonstrated by the very low average methane content below 1%, and significant higher of oxygen above 19%. This confirm that only way of biogas utilization is to burn it in flare on the landfill sites.
{"title":"Study of Biogas Composition on Operational and Non-Operational Landfill Sites from Poland","authors":"G. Przydatek, N. Bârsan, Artur �wigut","doi":"10.37358/rc.22.2.8517","DOIUrl":"https://doi.org/10.37358/rc.22.2.8517","url":null,"abstract":"\u0000An assessment of the variability of biogas components captured in an active and closed municipal waste landfill sites differing of amount deposited waste, activity period with their passive degassing, was presented in the article. The results of research did not show significant differences between components of LFG from studied landfill sites. But was confirmed that the two landfill sites including used landfill site, became at the last phase degradation of waste and advantage the anaerobic processes at the low value below 0.02 of CH4/O2 indicator. It was demonstrated by the very low average methane content below 1%, and significant higher of oxygen above 19%. This confirm that only way of biogas utilization is to burn it in flare on the landfill sites.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77720727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jiacheng Fan, Zhanqing Qu, Tiankui Guo, Ning Qi, Ming Chen, Xiaoqiang Liu, Jiwei Wand
The oil development has entered the water flooding stage in Changqing Oilfield. Due to the low reservoir permeability and the high oil viscosity, the water-flooding does not achieved the desired effect. A large amount of oil is retained in the reservoir due to the high water surface tension and oil-water interfacial tension. Currently, the performance of an oil-displacing agent is suitable for Changqing oilfield to mitigate this situation, but with high application cost due to its synthesis in an organic solution. In this study the oil-displacing agent is modified, and an amphiphilic oil-displacing agent is synthesized through aqueous polymerization. With addition of the oil-displacing agent, the surface/interface activity of water and oil changed significantly. The surface tension of water and oil reduces from 69mN/m to 25mN/m and from 21mN/m to 7.8mN/m respectively in the 1500mg/L oil-displacing agent at 60℃, and the oil-water interfacial tension reaches the ultra-low level. In addition, the oil-displacing agent has the good oil emulsification ability, and the emulsion shows stable performance. The core flooding experiment shows that the 2000mg/L oil-displacing agent can increase the oil recovery by 20% compared with the water flooding, and this meets the production needs in the oilfield. Since the oil-displacing agent contains a large number of chelating functional groups, so it can also chelate the heavy metal ions in the reservoir to prevent precipitation with incompatible anions in the injected water.
{"title":"Evaluation on the Basis and Application Performance of a Modified Surface Active Oil-displacing Agent","authors":"Jiacheng Fan, Zhanqing Qu, Tiankui Guo, Ning Qi, Ming Chen, Xiaoqiang Liu, Jiwei Wand","doi":"10.37358/rc.22.2.8519","DOIUrl":"https://doi.org/10.37358/rc.22.2.8519","url":null,"abstract":"\u0000The oil development has entered the water flooding stage in Changqing Oilfield. Due to the low reservoir permeability and the high oil viscosity, the water-flooding does not achieved the desired effect. A large amount of oil is retained in the reservoir due to the high water surface tension and oil-water interfacial tension. Currently, the performance of an oil-displacing agent is suitable for Changqing oilfield to mitigate this situation, but with high application cost due to its synthesis in an organic solution. In this study the oil-displacing agent is modified, and an amphiphilic oil-displacing agent is synthesized through aqueous polymerization. With addition of the oil-displacing agent, the surface/interface activity of water and oil changed significantly. The surface tension of water and oil reduces from 69mN/m to 25mN/m and from 21mN/m to 7.8mN/m respectively in the 1500mg/L oil-displacing agent at 60℃, and the oil-water interfacial tension reaches the ultra-low level. In addition, the oil-displacing agent has the good oil emulsification ability, and the emulsion shows stable performance. The core flooding experiment shows that the 2000mg/L oil-displacing agent can increase the oil recovery by 20% compared with the water flooding, and this meets the production needs in the oilfield. Since the oil-displacing agent contains a large number of chelating functional groups, so it can also chelate the heavy metal ions in the reservoir to prevent precipitation with incompatible anions in the injected water.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"53 5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89677918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dejun Niu, Kai Bao, Xuanye Huang, Maojuan Bai, Jun Wan
In this study, Co-porous-g-C3N4(porous Co-Doped graphitic carbon nitride) was synthesized by a one-step calcination method successfully. Co-porous-g-C3N4 was characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance, and specific surface area determination. The Photo- Fenton-like system was successfully constructed under the condition of coexistence of Co-porous-g-C3N4 and H2O2. The synergistic effect of Fenton-like system and photo-catalysis was realized. Through the optimization of experimental conditions, the best photocatalytic performance of this heterogeneous reaction system was achieved. The degradation rate of MB (methylene blue, 40 mg/L) could reach 98.3% at 90 min. Co-porous-g-C3N4 had photocatalytic degradation activity for different organic pollutants and had wonderful recyclability and stability. The main degradation effect was attributed to �O2- which could be generated through two channels in the Photo- Fenton-like system. Moreover, the rate of photogenerated electron-hole complexation could be decreased due to the reaction of low-valent cobalt and photoelectrons in this heterogeneous reaction system.
{"title":"Preparation of Co-Doped Graphitic Carbon Nitride and Degradation of MB by Heterogeneous Photo-Fenton-like Reaction System","authors":"Dejun Niu, Kai Bao, Xuanye Huang, Maojuan Bai, Jun Wan","doi":"10.37358/rc.22.2.8523","DOIUrl":"https://doi.org/10.37358/rc.22.2.8523","url":null,"abstract":"\u0000In this study, Co-porous-g-C3N4(porous Co-Doped graphitic carbon nitride) was synthesized by a one-step calcination method successfully. Co-porous-g-C3N4 was characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse reflectance, and specific surface area determination. The Photo- Fenton-like system was successfully constructed under the condition of coexistence of Co-porous-g-C3N4 and H2O2. The synergistic effect of Fenton-like system and photo-catalysis was realized. Through the optimization of experimental conditions, the best photocatalytic performance of this heterogeneous reaction system was achieved. The degradation rate of MB (methylene blue, 40 mg/L) could reach 98.3% at 90 min. Co-porous-g-C3N4 had photocatalytic degradation activity for different organic pollutants and had wonderful recyclability and stability. The main degradation effect was attributed to �O2- which could be generated through two channels in the Photo- Fenton-like system. Moreover, the rate of photogenerated electron-hole complexation could be decreased due to the reaction of low-valent cobalt and photoelectrons in this heterogeneous reaction system.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72812383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Chaves-Bedoya, Luz Yineth Ortíz-Rojas, Naftali Ochoa-Alejo
The use of molecules that promote plant defence mechanisms turn out to be an alternative in disease management in agriculturally important crops contributing to the reduction of pesticide use. The activation of the defence responses in plants constitute a promising tool for the control of diseases in conventional agriculture. The results of the effect of a Chamomile aqueous extract as organic inducer and a sulphur-based fungicide as inorganic chemical inducer, as well as their combination, on the induction of resistance-related PR1 and MPK1 genes are presented in this work. In vivo results show a deleterious effect of the organic inducer in papaya plants. However, this effect decreased when combined with the sulphur-based compound, which also reduced the severity of symptoms caused by PRSV. Our results indicate that the combined treatment generates a similar response in plants to that produced by Salicylic Acid in the induction of PR1 expression.
{"title":"Introduction of Defence Response in Papaya (Carica papaya) Against PRSV Through Organic and Inorganic Chemicals as Inducers","authors":"G. Chaves-Bedoya, Luz Yineth Ortíz-Rojas, Naftali Ochoa-Alejo","doi":"10.37358/rc.22.2.8518","DOIUrl":"https://doi.org/10.37358/rc.22.2.8518","url":null,"abstract":"\u0000The use of molecules that promote plant defence mechanisms turn out to be an alternative in disease management in agriculturally important crops contributing to the reduction of pesticide use. The activation of the defence responses in plants constitute a promising tool for the control of diseases in conventional agriculture. The results of the effect of a Chamomile aqueous extract as organic inducer and a sulphur-based fungicide as inorganic chemical inducer, as well as their combination, on the induction of resistance-related PR1 and MPK1 genes are presented in this work. In vivo results show a deleterious effect of the organic inducer in papaya plants. However, this effect decreased when combined with the sulphur-based compound, which also reduced the severity of symptoms caused by PRSV. Our results indicate that the combined treatment generates a similar response in plants to that produced by Salicylic Acid in the induction of PR1 expression.\u0000","PeriodicalId":21296,"journal":{"name":"Revista de Chimie","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86998015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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