Emancipation of heavy metals into water streams and landfills led to groundwater pollution and created a sustained havoc to our environment and implication of serious global threat. Surplus accumulation of heavy metal pollutants into the environment is contributed majorly by industrial sources. This contamination by metal ions in aqueous / effluent samples has altered the geochemistry of water / soil, adversely affecting the habitats/ fauna and flora. Therefore, development of cost- effective technologies employing attractive biomaterials to reduce the load of hazardous metals is investigated in this study. Exceeding concentrations of cadmium and iron in water bodies wrap up the choice of interest, to minimize their occurrence from industrial discharges. Thespesia populnea Seeds (TPS), as unique biomaterial, has been identified / modified chemically / activated, employed to analyse its sorption behavior in the process of trapping cadmium and iron ions and characterized using microscopic / FTIR / SEM / EDAX techniques. The role of operating factors viz. impact of agitation time, adsorbent dose, initial metal ion concentrations, temperature and solution pH in arriving the sorption equilibrium has been optimized under specified conditions. The results reveal the significant contribution of the employed material in sequestering Cd2+ and Fe3+metal ions from aqueous ambience.
{"title":"Surface Functionalized Eco-friendly Plant Seeds in the Confiscating Process of Toxic Metal ions from Aqueous Environment","authors":"G. Preethi, Andal N. Muthulakshmi","doi":"10.25303/2712rjce035043","DOIUrl":"https://doi.org/10.25303/2712rjce035043","url":null,"abstract":"Emancipation of heavy metals into water streams and landfills led to groundwater pollution and created a sustained havoc to our environment and implication of serious global threat. Surplus accumulation of heavy metal pollutants into the environment is contributed majorly by industrial sources. This contamination by metal ions in aqueous / effluent samples has altered the geochemistry of water / soil, adversely affecting the habitats/ fauna and flora. Therefore, development of cost- effective technologies employing attractive biomaterials to reduce the load of hazardous metals is investigated in this study. Exceeding concentrations of cadmium and iron in water bodies wrap up the choice of interest, to minimize their occurrence from industrial discharges. Thespesia populnea Seeds (TPS), as unique biomaterial, has been identified / modified chemically / activated, employed to analyse its sorption behavior in the process of trapping cadmium and iron ions and characterized using microscopic / FTIR / SEM / EDAX techniques. The role of operating factors viz. impact of agitation time, adsorbent dose, initial metal ion concentrations, temperature and solution pH in arriving the sorption equilibrium has been optimized under specified conditions. The results reveal the significant contribution of the employed material in sequestering Cd2+ and Fe3+metal ions from aqueous ambience.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139288967","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}
Pub Date : 2023-11-05DOI: 10.25303/2712rjce1450159
Nassima Amrani, Mebarek Baka, Mohammed Tahar Ben Moussa, Hassina Harkat, Karim Baziz
The purpose of this research is to study the toxic effect of salt stress on the length of the main root axis, the density of root hairs and the content of proline and soluble sugars in the leaves of broad bean (Vicia faba L.var. Aguadulce) and the possibility of reducing it by using two growth hormones by soaking seeds (Kinetin 150 ppm and Gibberellin 100 ppm). This experimental work has been conducted in field and greenhouse. Three doses of NaCl (S0:0 ppm, S1:3000 ppm and S2:7000 ppm) were applied four times during the vegetative stage, the floral stage and at maturity. The obtained results show that the level of stress S2 affects the growth and photosynthesis in a significant way. Proline and soluble sugars accumulate to a higher extent in the leaves of plants exposed to salt stress (farming in greenhouse and field). The accumulation of these osmolytes represents an adaptation to salt stress. In other way, the application of hormones by soaking seeds on stressed plants induced an anti-salts stress action by stimulation of growth and photosynthesis.
{"title":"Salt Stress Tolerance in Broad Bean (Vicia Faba L.) and the Interaction of NaCl and Phytohormones on the Root, Biochemical Characters in Greenhouse and in the Field","authors":"Nassima Amrani, Mebarek Baka, Mohammed Tahar Ben Moussa, Hassina Harkat, Karim Baziz","doi":"10.25303/2712rjce1450159","DOIUrl":"https://doi.org/10.25303/2712rjce1450159","url":null,"abstract":"The purpose of this research is to study the toxic effect of salt stress on the length of the main root axis, the density of root hairs and the content of proline and soluble sugars in the leaves of broad bean (Vicia faba L.var. Aguadulce) and the possibility of reducing it by using two growth hormones by soaking seeds (Kinetin 150 ppm and Gibberellin 100 ppm). This experimental work has been conducted in field and greenhouse. Three doses of NaCl (S0:0 ppm, S1:3000 ppm and S2:7000 ppm) were applied four times during the vegetative stage, the floral stage and at maturity. The obtained results show that the level of stress S2 affects the growth and photosynthesis in a significant way. Proline and soluble sugars accumulate to a higher extent in the leaves of plants exposed to salt stress (farming in greenhouse and field). The accumulation of these osmolytes represents an adaptation to salt stress. In other way, the application of hormones by soaking seeds on stressed plants induced an anti-salts stress action by stimulation of growth and photosynthesis.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139289162","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}
The present study deals with microwave assisted synthesis of novel acylhydrazoneoximes using para-substituted isonitrosoacetophenones and terephthalohydrazide. The compounds have been characterized by physicochemical and spectroscopic techniques. TheUV-Visible spectroscopy has been used for electronic excitation to characterize each of these new acylhydrazoneoximes. FTIR spectroscopy is used to conduct the functional group study. 1H and 13C-NMR spectroscopy, mass spectrometry has also been used.
{"title":"Microwave assisted Synthesis and Characterization of Novel Acylhydrazoneoximes","authors":"Jotiram Chavan, Raju M. Patil","doi":"10.25303/2712rjce031034","DOIUrl":"https://doi.org/10.25303/2712rjce031034","url":null,"abstract":"The present study deals with microwave assisted synthesis of novel acylhydrazoneoximes using para-substituted isonitrosoacetophenones and terephthalohydrazide. The compounds have been characterized by physicochemical and spectroscopic techniques. TheUV-Visible spectroscopy has been used for electronic excitation to characterize each of these new acylhydrazoneoximes. FTIR spectroscopy is used to conduct the functional group study. 1H and 13C-NMR spectroscopy, mass spectrometry has also been used.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139289285","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}
One alternative to traditional fossil fuels is biodiesel. It has a negative impact on nutritional supply because it is mostly manufactured from vegetable oils. Due to the possibility that oleaginous microbe lipids (such as those produced by bacteria, fungi and yeasts) could serve as an alternative raw material for the synthesis of biodiesel, the biomass and lipid buildup of Rhodococcus opacus were examined in several environmental settings. The study's current objective is to use the Response surface methodology's central composite design (CCD) to discover the ideal values of specific variables. Rhodococcus opacus, an oleaginous bacterium, was subjected to a CCD design using independent variables such as inoculum ratio, nitrogen concentration and magnesium concentration. The response variable used for the analysis was lipid content. Regarding the experimental data's lipid content%, a polynomial with a second-order model yielded good results (R2 = 96, (P ≤ 0.01)). Rhodococcus opacus produced the best results in the trials with glucose and hydrolysate with biomass concentrations of 4.75 g/L and 4.55 g/L and lipid contents of 71.18% and 66.55% respectively at pH 7. Compared to the starting values prior to optimization, these demonstrate a boost in the lipid concentration and an enhancement in the lipid coefficient. This study further supports the viability of R. opacus as a variant for the generation of biofuel from readily available, low-cost biomass resources.
{"title":"Enhanced Production of Microbial Lipid from R. opacus using Bagasse Hydrolysate","authors":"Zainab Mahmood, Lalit Kumar Singh","doi":"10.25303/2712rjce064075","DOIUrl":"https://doi.org/10.25303/2712rjce064075","url":null,"abstract":"One alternative to traditional fossil fuels is biodiesel. It has a negative impact on nutritional supply because it is mostly manufactured from vegetable oils. Due to the possibility that oleaginous microbe lipids (such as those produced by bacteria, fungi and yeasts) could serve as an alternative raw material for the synthesis of biodiesel, the biomass and lipid buildup of Rhodococcus opacus were examined in several environmental settings. The study's current objective is to use the Response surface methodology's central composite design (CCD) to discover the ideal values of specific variables. Rhodococcus opacus, an oleaginous bacterium, was subjected to a CCD design using independent variables such as inoculum ratio, nitrogen concentration and magnesium concentration. The response variable used for the analysis was lipid content. Regarding the experimental data's lipid content%, a polynomial with a second-order model yielded good results (R2 = 96, (P ≤ 0.01)). Rhodococcus opacus produced the best results in the trials with glucose and hydrolysate with biomass concentrations of 4.75 g/L and 4.55 g/L and lipid contents of 71.18% and 66.55% respectively at pH 7. Compared to the starting values prior to optimization, these demonstrate a boost in the lipid concentration and an enhancement in the lipid coefficient. This study further supports the viability of R. opacus as a variant for the generation of biofuel from readily available, low-cost biomass resources.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139289359","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}
Pub Date : 2023-11-05DOI: 10.25303/2712rjce1870196
K. P. Varshney, Shveta Malhotra
The use of lithium-ion batteries (LIBs) is on stimulating expansion and is expected to increase remarkably. The primary and secondary LIBs have been extensively used in electronic industries and are surging high in hybrid electric vehicles. The considerable use of LIBs could lead to the high accumulation of lithium and lead to the dissipation of the natural lithium reserves. The waste LIBs contain toxic chemicals and heavy metals that are hazardous to the environment. Thus, tremendous research work is being carried out for recycling spent LIBs. This will minimise the pollution from inappropriate disposal of Li in e-waste and would aim towards sustainable development. This review introduces the structure of LIBs and different composition of cathode material used in LIBs. It further discusses the various technologies including pre-treatment processes, pyrometallurgy and hydrometallurgy involved in recovering Li from waste LIBs. Additionally, challenges and suggestions for improving current recycling process have been presented.
{"title":"Recovery of Lithium from Waste Lithium-ion Batteries-A Review","authors":"K. P. Varshney, Shveta Malhotra","doi":"10.25303/2712rjce1870196","DOIUrl":"https://doi.org/10.25303/2712rjce1870196","url":null,"abstract":"The use of lithium-ion batteries (LIBs) is on stimulating expansion and is expected to increase remarkably. The primary and secondary LIBs have been extensively used in electronic industries and are surging high in hybrid electric vehicles. The considerable use of LIBs could lead to the high accumulation of lithium and lead to the dissipation of the natural lithium reserves. The waste LIBs contain toxic chemicals and heavy metals that are hazardous to the environment. Thus, tremendous research work is being carried out for recycling spent LIBs. This will minimise the pollution from inappropriate disposal of Li in e-waste and would aim towards sustainable development. This review introduces the structure of LIBs and different composition of cathode material used in LIBs. It further discusses the various technologies including pre-treatment processes, pyrometallurgy and hydrometallurgy involved in recovering Li from waste LIBs. Additionally, challenges and suggestions for improving current recycling process have been presented.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139288706","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}
In recent era, development of nanotechnology is an art of delivery of drug by improving its compatibility, effectiveness and efficacy. Among all nanoparticles, magnetic nanoparticles play a predominant role to shows their targeted drug delivery using a magnetic field, also helps to diagnose the diseases like cancer. The present study included preparation of four different mesoporous nanoparticles using the Pluronic block copolymer P123 as a surfactant template, then insert iron oxides using co-precipitation method. The resulted formed mesoporous magnetic nanoparticles are examined for structural characters by using FTIR, XRD, HRSEM and Elemental Mapping techniques. The results of X-ray diffraction (XRD) showed that the formed composites conserved ordered mesoporous structure after the formation of iron oxide nanoparticles in the pores. FTIR results indicated that the surface contains silanol group and Fe–O on the surface of the materials at 1060 cm-1 and 1020 cm-1 peaks respectively. Scanning electron microscopy (SEM) results showed that all mesoporous magnetic nanoparticles within the range of size from 50 to 100nm also possessed a regular spherical shape. These particles possessed high surface area, high pore volume and showed magnetic response sufficient for drug targeting in the presence of an external magnetic field. Elemental mapping data indicated about the percentage of all elements present in the mesoporous materials. We concluded that all four types of magnetic nanoparticles are structurally arranged in their structure with sufficient percentage of elements on their particle surface along with good size range. Further loading of drug into all types of magnetic nanoparticles decides the loading efficiency, stability and drug release nature.
{"title":"Synthesis and Characterization of Core-Shell Mesoporous Iron oxide Magnetic Nanoparticles using Modified Co-Precipitation Method","authors":"Venkata Satya A. Madhu Latha, C. Darwin","doi":"10.25303/2712rjce051056","DOIUrl":"https://doi.org/10.25303/2712rjce051056","url":null,"abstract":"In recent era, development of nanotechnology is an art of delivery of drug by improving its compatibility, effectiveness and efficacy. Among all nanoparticles, magnetic nanoparticles play a predominant role to shows their targeted drug delivery using a magnetic field, also helps to diagnose the diseases like cancer. The present study included preparation of four different mesoporous nanoparticles using the Pluronic block copolymer P123 as a surfactant template, then insert iron oxides using co-precipitation method. The resulted formed mesoporous magnetic nanoparticles are examined for structural characters by using FTIR, XRD, HRSEM and Elemental Mapping techniques. The results of X-ray diffraction (XRD) showed that the formed composites conserved ordered mesoporous structure after the formation of iron oxide nanoparticles in the pores. FTIR results indicated that the surface contains silanol group and Fe–O on the surface of the materials at 1060 cm-1 and 1020 cm-1 peaks respectively. Scanning electron microscopy (SEM) results showed that all mesoporous magnetic nanoparticles within the range of size from 50 to 100nm also possessed a regular spherical shape. These particles possessed high surface area, high pore volume and showed magnetic response sufficient for drug targeting in the presence of an external magnetic field. Elemental mapping data indicated about the percentage of all elements present in the mesoporous materials. We concluded that all four types of magnetic nanoparticles are structurally arranged in their structure with sufficient percentage of elements on their particle surface along with good size range. Further loading of drug into all types of magnetic nanoparticles decides the loading efficiency, stability and drug release nature.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139288838","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}
S. Malathi, Kumar T. Anantha, Sherin R. Jeba, C.V. Mythili
In the field of nanotechnology, the creation of efficient and efficient procedures for the synthesis of nanoparticles was important. The field of nanotechnology focused on the creation and application of devices and structures with organisational characteristics between the size of a single molecule and around 100 nm, where unique qualities emerge in contrast to bulk materials. The biological applications of nickel oxide include the enhancement of magnetic resonance imaging, the storage of magnetic data and the purification of biological samples using ferrofluids for catalysis, drug delivery, sensors and pigments. In this study, a new inorganic (NIO) nanoparticle's potential photocatalytic and antibacterial activities were examined. A straightforward chemical process was used to effectively produce nickel oxide nanoparticles. Polyvinyl alcohol serves as a polymer capping agent. The structure morphology and crystalline phase of NiO nanocrystals were investigated by XRD, SEM and TEM. The optical study was investigated by FT-IR spectroscopy. The anti-microbial activity of nanoparticles was determined by Gram-positive and Gram-negative bacteria.
在纳米技术领域，创建高效的纳米粒子合成程序非常重要。纳米技术领域的重点是创造和应用具有组织特征的装置和结构，其尺寸介于单分子到 100 纳米之间，与大块材料相比，具有独特的品质。氧化镍的生物应用包括增强磁共振成像、存储磁性数据，以及利用铁流体纯化生物样本，用于催化、药物输送、传感器和颜料。本研究考察了一种新型无机（NIO）纳米粒子潜在的光催化和抗菌活性。该研究采用了一种简单的化学工艺来有效地生产氧化镍纳米粒子。聚乙烯醇作为聚合物封端剂。通过 XRD、SEM 和 TEM 对纳米氧化镍晶体的结构形态和晶相进行了研究。光学研究采用傅立叶变换红外光谱法。用革兰氏阳性菌和革兰氏阴性菌测定了纳米颗粒的抗微生物活性。
{"title":"Facile Synthesis of Polymer Capped NiO Nanoparticles, Characterization, Photocatalytic and their Antibacterial Activities","authors":"S. Malathi, Kumar T. Anantha, Sherin R. Jeba, C.V. Mythili","doi":"10.25303/2712rjce044050","DOIUrl":"https://doi.org/10.25303/2712rjce044050","url":null,"abstract":"In the field of nanotechnology, the creation of efficient and efficient procedures for the synthesis of nanoparticles was important. The field of nanotechnology focused on the creation and application of devices and structures with organisational characteristics between the size of a single molecule and around 100 nm, where unique qualities emerge in contrast to bulk materials. The biological applications of nickel oxide include the enhancement of magnetic resonance imaging, the storage of magnetic data and the purification of biological samples using ferrofluids for catalysis, drug delivery, sensors and pigments. In this study, a new inorganic (NIO) nanoparticle's potential photocatalytic and antibacterial activities were examined. A straightforward chemical process was used to effectively produce nickel oxide nanoparticles. Polyvinyl alcohol serves as a polymer capping agent. The structure morphology and crystalline phase of NiO nanocrystals were investigated by XRD, SEM and TEM. The optical study was investigated by FT-IR spectroscopy. The anti-microbial activity of nanoparticles was determined by Gram-positive and Gram-negative bacteria.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139288978","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}
Binary proton-ligand as well as metal-ligand equilibria of Sebacicdicarboxylic acid dihydrazide (L) with Co2+and Ni2+were studied by pH-potentiometric method at 30 0C and I=0.1M (NaCl). Sebacic acid dihydrazide is an aliphatic polydentate ditopic ligand that can bind metal ions through two hydrazide groups present at the ends of a long linear –(CH2)8- hydrocarbon chain. This enables the ligand to form both mononuclear and binuclear species. The potentiometric data acquired were analysed chemometrically using the Miniquad-75 program. The complexes that converged include protonated (MLH, ML2H and ML2H2) and deprotonated forms (MLH-1 and ML2H-1) along with the simple unprotonated ML and ML2 types. The formation of homo-binuclear species of type M2L and M2LH-1 was also noticed.
{"title":"Chemical Modelling Potentiometric Study on the Complex Formation of Ditopic Sebacic Acid Dihydrazide with Co2+ and Ni2+in Aqueous Medium","authors":"Rama Krishna Saladi, Shyamala Pulipaka, Satyanarayana Atreyapu","doi":"10.25303/2712rjce1800186","DOIUrl":"https://doi.org/10.25303/2712rjce1800186","url":null,"abstract":"Binary proton-ligand as well as metal-ligand equilibria of Sebacicdicarboxylic acid dihydrazide (L) with Co2+and Ni2+were studied by pH-potentiometric method at 30 0C and I=0.1M (NaCl). Sebacic acid dihydrazide is an aliphatic polydentate ditopic ligand that can bind metal ions through two hydrazide groups present at the ends of a long linear –(CH2)8- hydrocarbon chain. This enables the ligand to form both mononuclear and binuclear species. The potentiometric data acquired were analysed chemometrically using the Miniquad-75 program. The complexes that converged include protonated (MLH, ML2H and ML2H2) and deprotonated forms (MLH-1 and ML2H-1) along with the simple unprotonated ML and ML2 types. The formation of homo-binuclear species of type M2L and M2LH-1 was also noticed.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139289328","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}
K. Kuswati, Yayuk Fatmawati, E. Narulita, R. Zainul
Weeds on rice plants have a lot of negative impacts on plant productivity. The majority of approaches in controlling weeds in rice used herbicides including the use of glyphosate as a synthetic herbicide. However, using glyphosate in the long-term results in soil and water pollution accumulation, resulting in decreased soil fertility. This study aims to find new herbicide candidates by mimicking glyphosate's mechanism in inhibiting EPSP synthase, ACCase and photosystem II found in three types of weeds (broad-leaved and grasses and sedges). Representatives of the three types are Monochoria vaginalis (broad-leaved weeds), Cyperus rotundus (sedges) and Eleusine indica (grasses). The PyRx AutoDoc Vina docked fourteen potential bioherbicide candidate compounds at specific sites. The binding affinity value is calculated and ranked to determine the best compound as a bioherbicide candidate. In predicting biological activity, the discovery studio visualized the interaction of each complex. Benzoate and Cinmethylin are the most potent compounds as bioherbicide candidates with binding affinities of -8.2 and -6.9 kcal/mol. This interaction shows 50-59% similarity with glyphosate, so this compound inhibits PEP synthesis, amino acid biosynthesis, photosynthesis and controlling weeds in rice plants.
水稻植株上的杂草对植物的产量有很多负面影响。控制水稻杂草的方法大多使用除草剂，包括使用草甘膦这种合成除草剂。然而，长期使用草甘膦会造成土壤和水污染积累，导致土壤肥力下降。本研究旨在通过模仿草甘膦对三种杂草（阔叶杂草、禾本科杂草和莎草）中的 EPSP 合成酶、ACCase 和光合系统 II 的抑制机制，寻找新的候选除草剂。这三种杂草的代表分别是：Monochoria vaginalis（阔叶杂草）、Cyperus rotundus（莎草）和 Eleusine indica（禾本科杂草）。PyRx AutoDoc Vina 在特定位点对接了十四种潜在的生物除草剂候选化合物。通过计算结合亲和值并进行排序，确定最佳候选生物除草剂化合物。在预测生物活性时，发现工作室将每个复合物的相互作用可视化。苯甲酸盐和蟾蜍素是最有效的候选生物除草剂化合物，其结合亲和力分别为-8.2和-6.9 kcal/mol。这种相互作用与草甘膦的相似度为 50-59%，因此该化合物可抑制 PEP 的合成、氨基酸的生物合成、光合作用并控制水稻植株中的杂草。
{"title":"In Silico Study of Glyphosate Substitute against Rice Weeds as Bioherbicides Candidate","authors":"K. Kuswati, Yayuk Fatmawati, E. Narulita, R. Zainul","doi":"10.25303/2712rjce01011","DOIUrl":"https://doi.org/10.25303/2712rjce01011","url":null,"abstract":"Weeds on rice plants have a lot of negative impacts on plant productivity. The majority of approaches in controlling weeds in rice used herbicides including the use of glyphosate as a synthetic herbicide. However, using glyphosate in the long-term results in soil and water pollution accumulation, resulting in decreased soil fertility. This study aims to find new herbicide candidates by mimicking glyphosate's mechanism in inhibiting EPSP synthase, ACCase and photosystem II found in three types of weeds (broad-leaved and grasses and sedges). Representatives of the three types are Monochoria vaginalis (broad-leaved weeds), Cyperus rotundus (sedges) and Eleusine indica (grasses). The PyRx AutoDoc Vina docked fourteen potential bioherbicide candidate compounds at specific sites. The binding affinity value is calculated and ranked to determine the best compound as a bioherbicide candidate. In predicting biological activity, the discovery studio visualized the interaction of each complex. Benzoate and Cinmethylin are the most potent compounds as bioherbicide candidates with binding affinities of -8.2 and -6.9 kcal/mol. This interaction shows 50-59% similarity with glyphosate, so this compound inhibits PEP synthesis, amino acid biosynthesis, photosynthesis and controlling weeds in rice plants.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139288761","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}
Garcinia indica is the fruit which is reddish purple in colour and is commonly known as kokum or amsul. G. indica is known to have major bioactive compounds viz. Garcinol, Hydroxycitric acid, Kokum butter. One of the major pigments it contains is anthocyanin. The present study was carried out to the isolation of pigment from dried kokum fruit using liquid- liquid extraction. The isolated pigment was identified using HR – LCMS. Further the isolated pigment was analyzed for its antioxidant (DPPH assay), antimicrobial (agar cup method) and cloth dying properties. The isolated pigment was identified as 4-Keto-4'-hydroxyalloxanthine. The pigment showed antimicrobial (24.5 mm zone of clearance) and antioxidant (230μg /ml) activity comparable to the standards ampicillin and ascorbic acid respectively. The extracted pigments gave yellow colour staining on the cotton cloth. The study demonstrated the isolation of 4-Keto-4'-hydroxyalloxanthine from G. indica and its medicinal and cloth dying properties.
{"title":"Hydroxyalloxanthine Pigment from Garcinia indica","authors":"Madhura M. Joglekar, S. Jamkhedkar","doi":"10.25303/2712rjce076082","DOIUrl":"https://doi.org/10.25303/2712rjce076082","url":null,"abstract":"Garcinia indica is the fruit which is reddish purple in colour and is commonly known as kokum or amsul. G. indica is known to have major bioactive compounds viz. Garcinol, Hydroxycitric acid, Kokum butter. One of the major pigments it contains is anthocyanin. The present study was carried out to the isolation of pigment from dried kokum fruit using liquid- liquid extraction. The isolated pigment was identified using HR – LCMS. Further the isolated pigment was analyzed for its antioxidant (DPPH assay), antimicrobial (agar cup method) and cloth dying properties. The isolated pigment was identified as 4-Keto-4'-hydroxyalloxanthine. The pigment showed antimicrobial (24.5 mm zone of clearance) and antioxidant (230μg /ml) activity comparable to the standards ampicillin and ascorbic acid respectively. The extracted pigments gave yellow colour staining on the cotton cloth. The study demonstrated the isolation of 4-Keto-4'-hydroxyalloxanthine from G. indica and its medicinal and cloth dying properties.","PeriodicalId":21012,"journal":{"name":"Research Journal of Chemistry and Environment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139289132","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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